CN115709787B - LNG cabin deck sectional construction method - Google Patents
LNG cabin deck sectional construction method Download PDFInfo
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- CN115709787B CN115709787B CN202211467831.0A CN202211467831A CN115709787B CN 115709787 B CN115709787 B CN 115709787B CN 202211467831 A CN202211467831 A CN 202211467831A CN 115709787 B CN115709787 B CN 115709787B
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- 238000010276 construction Methods 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 claims description 60
- 229910000831 Steel Inorganic materials 0.000 claims description 47
- 239000010959 steel Substances 0.000 claims description 47
- 210000000988 bone and bone Anatomy 0.000 claims description 41
- 238000009434 installation Methods 0.000 claims description 32
- 238000003466 welding Methods 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a LNG cabin deck sectional construction method, which comprises the steps of firstly assembling and dividing LNG cabin deck sections, and then constructing an inner deck, an inner deck component and a main deck after division; the main deck comprises a first main deck middle group and a second main deck middle group which are assembled in a building mode respectively, after the T-row penetrating hole structural form of the rib plate piece is replaced, the divided groups are assembled on a deck jig frame, and the LNG cabin deck subsection construction is completed. According to the invention, the shape of the T-row through holes on the rib plate is changed, so that the problem that the T-row clamping through holes cannot be installed when the rib plate falls down vertically is avoided, the bulk of the rib plate parts is avoided, and the construction efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of ship construction, and particularly relates to a LNG cabin deck sectional construction method.
Background
The LNG cabin deck section is positioned at the top of the LNG cabin and is a bulkhead surface of the LNG cabin, and after the flatness is required, the installation of the internal insulation module, the pasting of the shielding layer and the like are carried out; the construction difficulty of the LNG cabin internal containment system is high, the period is long, and if the construction problem of the LNG cabin deck section cannot be effectively solved, the ship products cannot be delivered on schedule; the LNG cabin deck segmentation precision requirement is high, requires to use the interior deck as the base level construction, guarantees the roughness of LNG cabin face. The upper sections of the main deck of the LNG cabin deck section are all flat-bulb steel and are bilaterally symmetrical; the inner deck consists of two parts, one part is provided with T rows and flat-bulb steel sections, the other part is bilaterally symmetrical, and the other part consists of the inner deck and reinforcing ribs.
The conventional construction mode is that the main deck and the rib plates form an assembly together, and the rib plate pulling-in method is needed for construction; the rib plate pulling-in method is adopted for construction, special rib plate pulling-in equipment is required for construction and installation, the production cost is high, and secondly, waste returns such as operation and the like are easily caused if the precision requirement does not reach the standard; when the rib plate pull-in method is not adopted for construction, the rib plate T row through holes can obstruct assembly welding of the main deck, the rib plates cannot vertically fall, the rib plates need to fall after being shifted to the side of the ship, but the flat bulb steel is blocked when being shifted to the side of the ship, so that most sections on the inner deck need to be in bulk, the construction period of the LNG cabin deck section is long, and the construction precision is reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a LNG cabin deck sectional construction method.
In order to achieve the above object, the present invention provides the following technical solutions:
The LNG cabin deck section construction method specifically comprises the following steps:
Firstly, performing assembly division on LNG cabin deck sections, wherein the LNG cabin deck sections comprise an inner deck middle deck group, an inner deck part and a main deck after assembly division; the main deck comprises a first main deck middle group and a second main deck middle group;
Secondly, manufacturing rib plate parts, platform parts, rib plate groups, longitudinal truss parts, T rows, flat-bulb steels and longitudinal bones; the rib plate component comprises a rib plate, a first rib plate piece, a second rib plate piece and a third rib plate piece, and the longitudinal truss component comprises a first longitudinal truss piece and a second longitudinal truss piece;
Thirdly, manufacturing an inner deck middle group, welding jointed boards on a production line to manufacture an inner deck, and mounting the T rows and the flat-bulb steel on the end surface of the inner deck to form the inner deck middle group after the inner deck is finished;
Fourthly, manufacturing an inner deck component, welding jointed boards on a deck jig to manufacture an inner deck, and mounting reinforcing ribs on the end face of the inner deck to form the inner deck component;
fifthly, manufacturing a middle group of the first main deck, welding jointed boards on a production line to manufacture the first main deck, installing the longitudinal ribs on the end face of the first main deck, and installing the rib plate components, the platform components, the longitudinal girder components and the rib plate subgroups on the longitudinal ribs to form the middle group of the first main deck after the longitudinal ribs are installed;
Step six, manufacturing a middle group of second main decks, welding jointed boards on a production line to manufacture the second main decks, installing the longitudinal bones on the end surfaces of the second main decks, and installing the rib plate parts, the longitudinal girder parts and the rib plate subgroups on the end surfaces of the middle groups of the second main decks where the longitudinal bones are positioned after the longitudinal bones are installed to form the middle groups of the second main decks;
And seventh, folding the inner deck middle group, the inner deck parts and the main deck to assemble the LNG cabin deck section.
The rib plate, the first rib plate and the second rib plate in the second step are assembled into a complete rib plate piece, the rib plate piece is integrally rectangular, a plurality of rib plate holes are formed in the end face of the rib plate piece, a plurality of rib plate through holes are formed in one side of the rib plate piece, a plurality of longitudinal bone mounting holes are formed in the other side of the rib plate piece, the rib plate through holes comprise T rows of through holes and flat-bulb steel through holes, the T rows of the inner deck end face and the flat-bulb steel are respectively inserted into the rib plate through holes in one side of the rib plate piece, and longitudinal bones in the main deck end face are respectively inserted into the longitudinal bone mounting holes in the other side of the rib plate piece; the T-row through holes are groove-shaped, the width of the T-row through holes is larger than the width of the upper portion of the T-row, and when the T-row through holes are inserted into the T-row through holes, two sides of the T-row through holes are respectively 35mm away from two ends of the upper portion of the T-row.
The specific steps for manufacturing the inner deck are as follows: the steel plate is welded to manufacture an inner deck through jointed boards on a production line, after the inner deck is manufactured, T rows and flat-bulb steels are welded on the end face of the inner deck, a plurality of rows of T rows are welded on two sides of the end face of the inner deck, a plurality of rows of flat-bulb steels are welded in the middle of the end face of the inner deck, the T rows and the flat-bulb steels are mutually parallel, and the T rows and the flat-bulb steels are welded with the end face of the inner deck vertically.
The inner deck member in the fourth step is manufactured by the following specific steps: the steel plate is welded on the assembly line to manufacture an inner deck through jointed boards, after the inner deck is manufactured, a plurality of reinforcing ribs are welded on the end face of the inner deck to form an inner deck component, and the reinforcing ribs are vertically connected with the inner deck.
The specific steps of the first main deck group manufacturing in the fifth step are as follows:
S1, splicing and welding a plurality of main deck jointed boards into a first main deck on a production line, scribing a longitudinal rib installation line on the end face of the first main deck, installing a watertight patch on one side of the first main deck, and after scribing the longitudinal rib installation line, respectively installing longitudinal ribs on the first main deck along the longitudinal rib installation lines, wherein the longitudinal rib installation lines are parallel to each other;
s2, a plurality of rib plates are equidistantly arranged on a longitudinal rib on one side of the first main deck, the rib plates are vertically connected with the longitudinal rib, and the bottoms of the rib plates are welded and fixed with the first main deck;
S3, after rib plate installation is completed, a plurality of first rib plate pieces are equidistantly installed on a longitudinal rib at the middle part of the first main deck, the space between every two adjacent first rib plate pieces is identical to the space between every two adjacent rib plates, the first rib plate pieces are vertically connected with the longitudinal rib, and the bottoms of the first rib plate pieces are fixedly welded with the first main deck;
S4, after the first rib plate piece is installed, respectively installing longitudinal girder parts at two sides of the first rib plate piece, wherein the longitudinal girder parts are perpendicular to the first rib plate piece, the bottoms of the longitudinal girder parts are welded and fixed with a first main deck, the first longitudinal girder parts are installed at the joints of the first rib plate piece and the rib plate, and the second longitudinal girder parts are installed at one side of the first rib plate piece far away from the rib plate;
s5, after the installation of the longitudinal girder components is completed, installing a platform component above the watertight patch in the first main deck, wherein the platform component is vertically connected with the end face of the second longitudinal girder component;
S6, after the platform part is installed, a plurality of second rib plate pieces are equidistantly installed on a longitudinal rib on one side of the end face of the first main deck, the rib plates and the rib plate pieces are respectively installed on two sides of the first rib plate pieces, and the distance between every two adjacent second rib plate pieces is the same as that between every two adjacent first rib plate pieces;
s7, after the second rib plate piece is installed, installing a third rib plate piece on the end face of the first main deck, and installing a rib plate group at one end of the first main deck to form a middle group of the first main deck; the third rib plate is parallel to the rib plate, and the rib plate group is parallel to the rib plate.
The specific steps of the second main deck group manufacturing in the sixth step are as follows:
S11, splicing and welding a plurality of main deck splicing plates into a second main deck on a production line, and scribing a longitudinal bone mounting line on the end face of the second main deck, wherein after the scribing of the longitudinal bone mounting line is completed, longitudinal bones are respectively mounted on the second main deck along the longitudinal bone mounting lines, and the longitudinal bone mounting lines are parallel to each other;
S12, the concrete steps of the installation of the rib plates, the first rib plates, the longitudinal girder members, the second rib plates and the third rib plates on the end face of the second main deck are the same as the installation steps and the installation sequences of the rib plates, the first rib plates, the longitudinal girder members, the second rib plates and the third rib plates on the end face of the first main deck, and the rib plates, the first rib plates, the longitudinal girder members, the second rib plates and the third rib plates on the end face of the second main deck are installed on the second main deck according to the installation sequences of the rib plates, the first rib plates, the longitudinal girder members, the second rib plates and the third rib plates on the end face of the first main deck;
S13, a sealing plate is arranged on the end face of the second main deck, the sealing plate is arranged on the side face of the rib plate subgroup on the second main deck, one end of the sealing plate is vertically connected with one side of the rib plate subgroup, and the other side of the sealing plate is vertically connected with one side of the second rib plate member close to the rib plate subgroup;
S14, the sealing plates are installed to form the middle group of the second main deck.
The specific steps of folding and assembling the LNG cabin deck sections in the seventh step are as follows:
s21, placing the manufactured inner deck middle group on a deck jig, placing the T rows and the end surfaces of the flat-bulb steels in the inner deck middle group upwards, turning over the inner deck part by 180 degrees, and then placing the inner deck part on one side of the inner deck middle group, wherein the end surfaces of the reinforcing ribs of the inner deck part face the direction of the deck jig;
S22, turning over the middle group of the first main deck for 180 degrees, and then placing the middle group of the first main deck on the inner deck, wherein the T rows of through holes and the T rows of flat-bulb steel through holes on the rib plates of the corresponding middle group of the first main deck are respectively inserted into the T rows of through holes and the flat-bulb steel through holes on the end face of the inner deck;
s23, turning over the second main deck middle group by 180 degrees, and then placing the second main deck middle group on the inner deck middle group, wherein the T-shaped rows and the flat-bulb steel on the end surface of the inner deck are respectively inserted into the T-shaped rows and the flat-bulb steel through holes on the corresponding rib plates of the second main deck middle group;
S24, after the first main deck middle group and the second main deck middle group are installed, welding and fixing the joints of the inner deck middle group and the inner deck components, wherein the bottom ends of the rib plate components, the longitudinal girder components and the rib plate subgroups in the first main deck middle group and the second inner deck middle group are welded and fixed with the end faces of the inner deck middle group, and the joints of the first main deck middle group and the second main deck middle group are welded and fixed to finish LNG cabin deck section construction;
S25, after the LNG cabin deck section is built, the LNG cabin deck section precision is checked to be qualified, and the inner deck middle group is used as a base surface for normal transportation to carry out spraying operation.
The inner deck components are spliced on one side of the inner deck in the length direction of the inner deck group, the length of the inner deck components is the same as the length of the inner deck group, and the width of the inner deck components is smaller than the width of the inner deck group.
When the first main deck middle group is installed, the watertight supplementary plate is positioned on one side of the inner deck middle group end face, the width of the first main deck middle group is equal to the sum of the width of the inner deck middle group and the width of the inner deck part, and the rib plate small group in the first main deck middle group is connected with the outer side of the inner deck part.
When the second main deck middle group is installed, one side of the sealing plate is connected with one side of the first main deck middle group, the width of the second main deck middle group is the same as that of the first main deck middle group, the rib plate sub-group in the second main deck middle group is connected with the outer side of the inner deck part, and the rib plate sub-group in the second main deck middle group is connected with the rib plate sub-group in the first main deck middle group to form a complete rib plate sub-group.
Based on the technical scheme, the LNG cabin deck sectional construction method disclosed by the invention has the following technical advantages through practical application:
1. According to the LNG cabin deck sectional construction method, the structural form of the T-row through holes on the rib plate is changed, so that the problem that the T-row clamping through holes cannot be installed when the rib plates vertically fall down and are installed is avoided, the rib plate parts are prevented from being in bulk, and the construction efficiency is improved.
2. According to the LNG cabin deck sectional construction method, the structural form of the T-shaped through holes on the rib plates is changed, so that the rib plates can be vertically arranged in a falling mode under the condition that rib plate drawing equipment is not used, the construction cost is reduced, meanwhile, the LNG cabin decks are sectionally constructed and folded, the construction period is shortened, the construction difficulty is reduced, and the construction precision is improved.
Drawings
Fig. 1 is a sectional structure view of an LNG deck in an LNG deck sectional construction method of the present invention.
Fig. 2 is a structural diagram of a rib member before modification in a LNG deck segment construction method of the present invention.
Fig. 3 is a structural diagram of a modified rib member in a LNG deck segment construction method according to the present invention.
Fig. 4 is a diagram of an internal deck mid-deck block diagram in a LNG tank deck segment construction method according to the present invention.
Fig. 5 is a block diagram of the inner deck members of a LNG tank deck segment construction method according to the present invention.
Fig. 6 is a flow chart of the assembly of the first main deck in the LNG deck segment construction method of the present invention.
Fig. 7 is a flow chart of the assembly of a second main deck in an LNG deck segment construction method according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by way of specific examples shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
As shown in fig. 1-7, a method for constructing an LNG cabin deck section specifically includes the following steps:
firstly, performing assembly division on an LNG cabin deck section 1, wherein the LNG cabin deck section 1 comprises an inner deck middle group 2, an inner deck part 3 and a main deck after assembly division; the main deck comprises a first main deck middle group 4 and a second main deck middle group 5;
Secondly, manufacturing rib plate components, platform components 75, rib plate groups 76, longitudinal truss components, T-shaped rows 21, flat-bulb steels 22 and longitudinal bones 42; the rib members include a rib 71, a first rib plate 72, a second rib plate 73, and a third rib plate 77, and the stringer members include a first stringer 78 and a second stringer 74;
thirdly, manufacturing an inner deck middle group 2, welding jointed boards on a production line to manufacture an inner deck, and mounting the T-shaped row 21 and the flat-bulb steel 22 on the end surface of the inner deck to form the inner deck middle group 2 after the inner deck is finished;
fourthly, manufacturing an inner deck part 3, manufacturing an inner deck by splicing and welding on a deck jig frame, and mounting reinforcing ribs 31 on the end face of the inner deck to form the inner deck part 3;
Fifthly, manufacturing a first main deck middle group 4, manufacturing a first main deck 41 by splicing and welding on a production line, mounting the longitudinal ribs 42 on the end surface of the first main deck 41, and mounting the rib plate components, the platform components 75, the longitudinal girder components and the rib plate sub-groups 76 on the longitudinal ribs 42 to form the first main deck middle group 4 after the longitudinal ribs 42 are mounted;
Step six, manufacturing a second main deck middle group 5, welding jointed boards on a production line to manufacture a second main deck 51, installing the longitudinal ribs 42 on the end surface of the second main deck 51, and installing the rib plate components, the longitudinal girder components and the rib plate subgroups 76 on the end surface of the second main deck middle group 5 where the longitudinal ribs 42 are positioned after the installation of the longitudinal ribs 42 is completed to form the second main deck middle group 5;
seventh, the inner deck middle group 2, the inner deck parts 3 and the main deck are assembled into an LNG cabin deck section 1.
The rib plate 71, the first rib plate 72 and the second rib plate 73 in the second step are assembled into a complete rib plate member 6, the rib plate member 6 is in a rectangle shape as a whole, a plurality of rib plate holes 63 are formed in the end face of the rib plate member 6, a plurality of rib plate through holes are formed in one side of the rib plate member 6, a plurality of longitudinal bone mounting holes 64 are formed in the other side of the rib plate member 6, the rib plate through holes comprise T-row through holes 61 and flat-bulb steel through holes 62, the T-row 21 and the flat-bulb steel 22 on the end face of the inner deck are respectively inserted into the rib plate through holes in one side of the rib plate member 6, and longitudinal bones 42 on the end face of the main deck are respectively inserted into the longitudinal bone mounting holes 64 in the other side of the rib plate member 6; the T-row through holes 61 are groove-shaped, the width of the T-row through holes 61 is larger than the width of the upper part of the T-row 21, and when the T-row 21 is inserted into the T-row through holes 61, two sides of the T-row through holes 61 are respectively 35mm away from two ends of the upper part of the T-row 21; by changing the structural form of the T-row through holes 61 on the rib plate 6, the problem that the T-row 21 is blocked by the through holes and cannot be installed when the rib plate falls vertically is avoided, the loose assembly of the rib plate parts is avoided, and the construction efficiency is improved.
The specific steps for manufacturing the inner deck group 2 are as follows: the steel sheet is through the interior deck of makeup welding preparation on the assembly line, and interior deck preparation is accomplished the back, installs and welds T row 21 and flat-bulb steel 22 on interior deck terminal surface, interior deck terminal surface both sides welding multirow T row 21, interior deck terminal surface middle part welding multirow flat-bulb steel 22, T row 21 with flat-bulb steel 22 are parallel to each other, T row 21 with flat-bulb steel 22 with interior deck terminal surface vertical welding.
The inner deck member 3 in the fourth step is manufactured by the following steps: the steel plate is welded to manufacture an inner deck through jointed boards on a production line, after the inner deck is manufactured, a plurality of reinforcing ribs 31 are welded to the end face of the inner deck to form an inner deck part 3, and the reinforcing ribs 31 are vertically connected with the inner deck.
The specific steps of the group 4 manufacturing in the first main deck in the fifth step are as follows:
S1, splicing and welding a plurality of main deck splicing plates into a first main deck 41 on a production line, scribing a longitudinal bone mounting line on the end surface of the first main deck 41, mounting a watertight patch 43 on one side of the first main deck 41, and mounting longitudinal bones 42 on the first main deck 41 along the longitudinal bone mounting lines after scribing the longitudinal bone mounting line, wherein the longitudinal bone mounting lines are parallel to each other;
S2, a plurality of rib plates 71 are equidistantly arranged on the longitudinal rib 42 on one side of the first main deck 41, the rib plates 71 are vertically connected with the longitudinal rib 42, and the bottoms of the rib plates 71 are fixedly welded with the first main deck 41;
S3, after the rib plates 71 are installed, a plurality of first rib plate members 72 are installed on the longitudinal ribs 42 in the middle of the first main deck 41 at equal intervals, the intervals between the adjacent first rib plate members 72 are the same as the intervals between the rib plates 71, the first rib plate members 72 are vertically connected with the longitudinal ribs 42, and the bottoms of the first rib plate members 72 are fixedly welded with the first main deck 41;
S4, after the first rib plate 72 is installed, respectively installing a longitudinal girder component at two sides of the first rib plate 72, wherein the longitudinal girder component is perpendicular to the first rib plate 72, the bottom of the longitudinal girder component is welded and fixed with the first main deck 41, a first longitudinal girder 78 is installed at the joint of the first rib plate 72 and the rib plate 71, and a second longitudinal girder 74 is installed at one side of the first rib plate 72 far away from the rib plate 71;
S5, after the installation of the stringer members, installing a platform member 75 above the watertight patch 43 in the first main deck 41, wherein the platform member 75 is vertically connected with the end surface of the second stringer 74;
S6, after the platform part 75 is installed, a plurality of second rib plates 73 are equidistantly installed on the longitudinal ribs 42 on one side of the end face of the first main deck 41, the rib plates 71 and the second rib plates 73 are respectively installed on two sides of the first rib plates 72, and the interval between the adjacent second rib plates 73 is the same as the interval between the first rib plates 72;
s7, after the second rib plate 73 is installed, installing a third rib plate 77 on the end face of the first main deck 41, and installing a rib plate group 76 on one end of the first main deck 41 to form a first main deck middle group 4; the third rib member 77 is parallel to the rib 71 and the rib plate subset 76 is parallel to the rib 71.
The specific steps of the group 5 manufacturing in the second main deck in the sixth step are as follows:
S11, splicing and welding a plurality of main deck splicing plates into a second main deck plate 51 on a production line, and scribing a longitudinal bone mounting line on the end surface of the second main deck plate 51, wherein after the scribing of the longitudinal bone mounting line is completed, longitudinal bones 42 are respectively mounted on the second main deck plate 51 along the longitudinal bone mounting lines, and the longitudinal bone mounting lines are parallel to each other;
S12, the specific steps of installing the rib plate 71, the first rib plate 72, the stringer member, the second rib plate 73 and the third rib plate 77 on the end surface of the second main deck 51 are the same as the steps of installing the rib plate 71, the first rib plate 72, the stringer member, the second rib plate 73 and the third rib plate 77 on the end surface of the first main deck 41, and the rib plate 71, the first rib plate 72, the stringer member, the second rib plate 73 and the third rib plate 77 on the end surface of the second main deck 51 are installed on the second main deck 51 according to the installation sequence of the rib plate 71, the first rib plate 72, the stringer member, the second rib plate 73 and the third rib plate 77 on the end surface of the first main deck 41;
S13, a sealing plate 52 is arranged on the end face of the second main deck 51, the sealing plate 52 is arranged on the side face of the rib plate subgroup 76 on the second main deck 51, one end of the sealing plate 52 is vertically connected with one side of the rib plate subgroup 76, and the other side of the sealing plate 52 is vertically connected with one side of the second rib plate 73 close to the rib plate subgroup 76;
S14, the sealing plate 52 is mounted to complete the assembly 5 of the second main deck.
The specific steps of folding and assembling the LNG cabin deck section 1 in the seventh step are as follows:
S21, placing the manufactured inner deck middle group 2 on a deck jig, placing the end surfaces of the T-shaped rows 21 and the flat-bulb steels 22 in the inner deck middle group 2 upwards, turning over the inner deck part 3 for 180 degrees, and then placing the inner deck part 3 on one side of the inner deck middle group 2, wherein the end surfaces of the reinforcing ribs 31 of the inner deck part 3 face the direction of the deck jig;
S22, turning over the first main deck middle group 4 by 180 degrees, and then placing the first main deck middle group 4 on the inner deck middle group 2, wherein the T-shaped row 21 and the flat-bulb steel 22 on the end surface of the inner deck are respectively inserted into the corresponding T-shaped row through holes 61 and the corresponding flat-bulb steel through holes 62 on the rib plate piece 6 of the first main deck middle group 4;
S23, turning over the second main deck middle group 5 by 180 degrees, and then placing the second main deck middle group 2 on the inner deck middle group, wherein the T-shaped row 21 and the flat-bulb steel 22 on the end surface of the inner deck are respectively inserted into the corresponding T-shaped row 21 through holes 61 and the flat-bulb steel through holes 62 on the rib plate piece 6 of the second main deck middle group 5;
S24, after the first main deck middle group 4 and the second main deck middle group 5 are installed, welding and fixing the joint of the inner deck middle group 2 and the inner deck part 3, wherein the bottom ends of the rib plate parts, the longitudinal girder parts and the rib plate small groups 76 in the first main deck middle group 4 and the second inner deck middle group 2 are welded and fixed with the end surface of the inner deck middle group 2, and the joint of the first main deck middle group 4 and the second main deck middle group 5 is welded and fixed to complete the construction of the LNG cabin deck section 1;
S25, after the LNG cabin deck section 1 is built, spraying operation is carried out by taking the group 2 in the inner deck as a base surface for normal transportation after the accuracy of the LNG cabin deck section 1 is checked to be qualified.
The inner deck member 3 is spliced on one side of the inner deck in the length direction of the group 2, the length of the inner deck member 3 is the same as the length of the inner deck in the group 2, and the width of the inner deck member 3 is smaller than the width of the inner deck in the group 2.
When the first main deck middle group 4 is installed, the watertight supplementary plate 43 is positioned on one side of the end face of the inner deck middle group 2, the width of the first main deck middle group 4 is equal to the sum of the width of the inner deck middle group 2 and the width of the inner deck part 3, and the rib plate group 76 in the first main deck middle group 4 is connected with the outer side of the inner deck part 3.
When the second main deck middle group 5 is installed, one side of the sealing plate 52 is connected with one side of the first main deck middle group 4, the width of the second main deck middle group 5 is the same as that of the first main deck middle group 4, the rib plate sub-group 76 in the second main deck middle group 5 is connected with the outer side of the inner deck part 3, and the rib plate sub-group 76 of the second main deck middle group 5 is connected with the rib plate sub-group 76 of the first main deck middle group 4 to form a complete rib plate sub-group 76; the structural form of the through holes 61 of the T-shaped row 21 on the rib plate member 6 is changed, so that the rib plate member 6 can be vertically arranged in a falling mode under the condition that rib plate drawing equipment is not used, the construction cost is reduced, meanwhile, the LNG cabin deck sections 1 are assembled in groups, the construction period is shortened, the construction difficulty is reduced, and the construction precision is improved.
When the first main deck middle group 4 and the second main deck middle group 5 are installed, the first main deck middle group 4 and the second main deck middle group 5 are respectively hoisted to the upper part of the inner deck middle group 2 for installation, and the first main deck middle group 4 and the second main deck middle group 5 finish the construction of the LNG cabin deck section 1 through vertical falling installation.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that; modifications may be made to the specific embodiments of the invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (8)
1. The LNG cabin deck sectional construction method is characterized by comprising the following steps of:
Firstly, assembling and dividing LNG cabin deck segments (1), wherein the LNG cabin deck segments (1) comprise an inner deck middle group (2), an inner deck part (3) and a main deck after being assembled and divided; the main deck comprises a first main deck mid-stack (4) and a second main deck mid-stack (5);
Secondly, manufacturing rib plate parts, platform parts (75), rib plate groups (76), longitudinal girder parts, T rows (21), flat-bulb steels (22) and longitudinal bones (42); the rib member includes a rib (71), a first rib plate (72), a second rib plate (73) and a third rib plate (77), and the stringer member includes a first stringer (78) and a second stringer (74); the rib plate (71), the first rib plate (72) and the second rib plate (73) in the second step are assembled into a complete rib plate piece (6), the rib plate piece (6) is integrally rectangular, a plurality of rib plate holes (63) are formed in the end face of the rib plate piece (6), a plurality of rib plate through holes are formed in one side of the rib plate piece (6), a plurality of longitudinal bone mounting holes (64) are formed in the other side of the rib plate piece (6), the rib plate through holes comprise T-row through holes (61) and flat-bulb steel through holes (62), the T-row (21) and flat-bulb steel (22) on the inner deck end face are respectively inserted into the rib plate through holes in one side of the rib plate piece (6), and longitudinal bones (42) on the main deck end face are respectively inserted into the longitudinal bone mounting holes (64) in the other side of the rib plate piece (6); the T-shaped row of through holes (61) is in a groove shape, the width of the T-shaped row of through holes (61) is larger than the width of the upper part of the T-shaped row (21), when the T-shaped row (21) is inserted into the T-shaped row of through holes (61), two sides of the T-shaped row of through holes (61) are respectively 35mm away from two ends of the upper part of the T-shaped row (21), and the specific steps of manufacturing the inner deck middle group (2) are as follows: manufacturing an inner deck by welding jointed boards on a production line, after the inner deck is manufactured, welding T rows (21) and flat-bulb steels (22) on the end faces of the inner deck, welding a plurality of rows of the T rows (21) on two sides of the end faces of the inner deck, welding a plurality of rows of the flat-bulb steels (22) on the middle part of the end faces of the inner deck, wherein the T rows (21) and the flat-bulb steels (22) are parallel to each other, and welding the T rows (21) and the flat-bulb steels (22) with the end faces of the inner deck vertically;
thirdly, manufacturing an inner deck middle group (2), welding jointed boards on a production line to manufacture an inner deck, and mounting the T-shaped row (21) and the flat-bulb steel (22) on the end surface of the inner deck to form the inner deck middle group (2) after the inner deck is finished;
Fourthly, manufacturing an inner deck component (3), manufacturing an inner deck by splicing plates on a deck jig frame, and mounting reinforcing ribs (31) on the end face of the inner deck to form the inner deck component (3);
Fifthly, manufacturing a middle first main deck group (4), manufacturing a first main deck (41) by splicing and welding on a production line, mounting the longitudinal ribs (42) on the end face of the first main deck (41), and mounting the rib plate components, the platform components (75), the longitudinal girder components and the rib plate groups (76) on the longitudinal ribs (42) after the longitudinal ribs (42) are mounted to form the middle first main deck group (4);
manufacturing a second main deck middle group (5), splicing and welding a second main deck (51) on a production line, installing the longitudinal ribs (42) on the end surface of the second main deck (51), and installing the rib plate components, the longitudinal girder components and the rib plate small groups (76) on the end surface of the second main deck middle group (5) where the longitudinal ribs (42) are positioned after the installation of the longitudinal ribs (42) is completed to form the second main deck middle group (5);
And seventhly, folding the inner deck middle group (2), the inner deck part (3) and the main deck to assemble the LNG cabin deck section (1).
2. A LNG tank deck segment construction method according to claim 1, characterized in that the inner deck member (3) in the fourth step is manufactured by the following specific steps: the steel plate is welded to manufacture an inner deck through jointed boards on a production line, after the inner deck is manufactured, a plurality of reinforcing ribs (31) are welded to the end face of the inner deck to form an inner deck component (3), and the reinforcing ribs (31) are vertically connected with the inner deck.
3. The LNG deck segment construction method according to claim 1, wherein the specific steps of the first main deck middle group (4) production in the fifth step are:
s1, splicing and welding a plurality of main deck splicing plates into a first main deck plate (41) on a production line, scribing a longitudinal bone installation line on the end face of the first main deck plate (41), installing a watertight patch (43) on one side of the first main deck plate (41), and installing longitudinal bones (42) on the first main deck plate (41) along the longitudinal bone installation lines after the scribing of the longitudinal bone installation line is completed, wherein the longitudinal bone installation lines are parallel to each other;
S2, a plurality of rib plates (71) are equidistantly arranged on a longitudinal rib (42) on one side of a first main deck (41), the rib plates (71) are vertically connected with the longitudinal rib (42), and the bottoms of the rib plates (71) are fixedly welded with the first main deck (41);
S3, after the rib plates (71) are installed, a plurality of first rib plate members (72) are equidistantly installed on a longitudinal rib (42) in the middle of the first main deck (41), the distance between every two adjacent first rib plate members (72) is the same as the distance between the rib plates (71), the first rib plate members (72) are vertically connected with the longitudinal rib (42), and the bottoms of the first rib plate members (72) are fixedly welded with the first main deck (41);
S4, after the first rib plate (72) is installed, respectively installing longitudinal girder parts at two sides of the first rib plate (72), wherein the longitudinal girder parts are perpendicular to the first rib plate (72), the bottoms of the longitudinal girder parts are welded and fixed with a first main deck (41), a first longitudinal girder part (78) is installed at the joint of the first rib plate (72) and the rib plate (71), and a second longitudinal girder part (74) is installed at one side of the first rib plate (72) away from the rib plate (71);
S5, after the installation of the stringer components is completed, installing a platform component (75) above the watertight patch (43) in the first main deck (41), wherein the platform component (75) is vertically connected with the end surface of the second stringer component (74);
s6, after the platform part (75) is installed, a plurality of second rib plates (73) are equidistantly installed on longitudinal bones (42) on one side of the end face of the first main deck (41), the rib plates (71) and the second rib plates (73) are respectively installed on two sides of the first rib plates (72), and the distance between every two adjacent second rib plates (73) is the same as the distance between every two adjacent first rib plates (72);
S7, after the installation of the second rib plate (73) is completed, installing a third rib plate (77) on the end face of the first main deck (41), and installing a rib plate group (76) at one end of the first main deck (41) to form a first main deck middle group (4); the third rib member (77) is parallel to the rib (71), and the rib subgroup (76) is parallel to the rib (71).
4. The LNG deck segment construction method according to claim 1, wherein the specific steps of the second main deck middle group (5) production in the sixth step are:
S11, splicing and welding a plurality of main deck splicing plates into a second main deck plate (51) on a production line, and scribing a longitudinal bone installation line on the end surface of the second main deck plate (51), wherein after the longitudinal bone installation line is scribed, longitudinal bones (42) are respectively arranged on the second main deck plate (51) along the longitudinal bone installation lines, and the longitudinal bone installation lines are parallel to each other;
S12, the specific steps of the installation of the rib plates (71), the first rib plate (72), the longitudinal girder component, the second rib plate (73) and the third rib plate (77) on the end face of the second main deck (51) are the same as the installation steps and the installation sequence of the rib plates (71), the first rib plate (72), the longitudinal girder component, the second rib plate (73) and the third rib plate (77) on the end face of the first main deck (41), and the rib plates (71), the first rib plate (72), the longitudinal girder component, the second rib plate (73) and the third rib plate (77) on the end face of the second main deck (51) are installed on the second main deck (51) according to the installation sequence of the rib plates (71), the first rib plate (72), the longitudinal girder component, the second rib plate (73) and the third rib plate (77) on the end face of the first main deck (41);
S13, a sealing plate (52) is arranged on the end face of the second main deck (51), the sealing plate (52) is arranged on the side face of a rib plate subgroup (76) on the second main deck (51), one end of the sealing plate (52) is vertically connected with one side of the rib plate subgroup (76), and the other side of the sealing plate (52) is vertically connected with one side of a second rib plate (73) close to the rib plate subgroup (76);
s14, the sealing plates (52) are installed to form the second main deck middle group (5).
5. The LNG deck segment construction method according to claim 1, wherein the specific steps of folding and assembling the LNG deck segment (1) in the seventh step are:
S21, placing the manufactured inner deck middle group (2) on a deck jig, placing the end surfaces of T rows (21) and flat-bulb steels (22) in the inner deck middle group (2) upwards, turning over the inner deck part (3) for 180 degrees, and then placing the inner deck part on one side of the inner deck middle group (2), wherein the end surfaces of reinforcing ribs (31) of the inner deck part (3) face the direction of the deck jig;
S22, turning over the first main deck middle group (4) for 180 degrees, and then placing the first main deck middle group (4) on the inner deck middle group (2), wherein the T-shaped rows (21) and the flat-bulb steel (22) on the end surface of the inner deck are respectively inserted into the corresponding T-shaped row through holes (61) and the corresponding flat-bulb steel through holes (62) on the rib plate piece (6) of the first main deck middle group (4);
s23, turning over the second main deck middle group (5) by 180 degrees and then placing the second main deck middle group (5) on the inner deck middle group (2), wherein the T-shaped row (21) and the flat-bulb steel (22) on the end surface of the inner deck are respectively inserted into the corresponding T-shaped row through holes (61) and the corresponding flat-bulb steel through holes (62) on the rib plate piece (6) of the second main deck middle group (5);
S24, after the first main deck middle group (4) and the second main deck middle group (5) are installed, the joint of the inner deck middle group (2) and the inner deck part (3) is welded and fixed, the bottom ends of the rib plate parts, the stringer parts and the rib plate small groups (76) in the first main deck middle group (4) and the second main deck middle group (5) are welded and fixed with the end surface of the inner deck middle group (2), and the joint of the first main deck middle group (4) and the second main deck middle group (5) is welded and fixed to finish the construction of LNG cabin deck sections (1);
s25, after the LNG cabin deck section (1) is built, spraying operation is carried out by taking the group (2) in the inner deck as a base surface for normal transportation after the accuracy of the LNG cabin deck section (1) is checked to be qualified.
6. A LNG deck segment construction method according to claim 5, characterized in that the inner deck members (3) are spliced on one side of the inner deck in the length direction of the group (2), the length of the inner deck members (3) is the same as the length of the inner deck in the group (2), and the inner deck members (3) have a width smaller than the width of the inner deck in the group (2).
7. A method of sectional construction of LNG decks according to claim 3, characterized in that the watertight patch (43) is located on the end face side of the inner deck middle group (2) when the first main deck middle group (4) is installed, the first main deck middle group (4) width being equal to the sum of the inner deck middle group (2) width and the inner deck member (3) width, the rib plate subgroup (76) in the first main deck middle group (4) being connected to the outside of the inner deck member (3).
8. The LNG deck segment construction method according to claim 4, characterized in that when the second main deck middle group (5) is installed, one side of the closing plate (52) is connected to one side of the first main deck middle group (4), the width of the second main deck middle group (5) is the same as the width of the first main deck middle group (4), the rib plate sub-group (76) in the second main deck middle group (5) is connected to the outer side of the inner deck member (3), and the rib plate sub-group (76) of the second main deck middle group (5) is connected to the rib plate sub-group (76) of the first main deck middle group (4) to form a complete rib plate sub-group (76).
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| CN108177730A (en) * | 2017-12-25 | 2018-06-19 | 沪东中华造船(集团)有限公司 | A kind of integrated method of construction of topside segmentation |
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