CN211816286U - Steel wire rope stretching method beam-string type supporting structure - Google Patents
Steel wire rope stretching method beam-string type supporting structure Download PDFInfo
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- CN211816286U CN211816286U CN202020256551.5U CN202020256551U CN211816286U CN 211816286 U CN211816286 U CN 211816286U CN 202020256551 U CN202020256551 U CN 202020256551U CN 211816286 U CN211816286 U CN 211816286U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 41
- 239000010959 steel Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 18
- 239000000463 material Substances 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 239000011150 reinforced concrete Substances 0.000 description 2
- 241000209128 Bambusa Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to a steel construction technical field specifically indicates a steel wire rope stretching method beam-string type bearing structure. A plurality of groups of top support cylinders which are arranged at intervals along the length direction of the support girder are arranged at the side part of the support girder; the jacking cylinder is an overhanging structure with one end fixed on the side part of the supporting main beam and the other end extending along the length direction of the vertical supporting main beam, and one end of the jacking cylinder far away from the supporting main beam is connected with a tensioning cable; the tensioning cable is arranged along the length direction of the supporting main beam, one end of the tensioning cable is connected to the supporting main beam, and a tensioning structure for tensioning and locking or loosening the tensioning cable is arranged between the other end of the tensioning cable and the supporting main beam; the cable body between the two ends of the tensioning cable is sequentially connected to one end, far away from the supporting main beam, of the multiple groups of top supporting cylinders, and the top supporting cylinders are stressed by tensioning of the tensioning structure. The utility model discloses simple structure, the installation operation construction is very convenient, and the material that just uses is also cheap easily to be obtained, has increased substantially efficiency of construction and application scope, has very big spreading value.
Description
Technical Field
The utility model relates to a steel construction technical field specifically indicates a steel wire rope stretching method beam-string type bearing structure.
Background
The Beam String is a rigid-flexible mixed structure which is formed by connecting an upper-chord rigid member (Beam) and a high-strength tension cable/rod (String) through a plurality of support rods (Strut), and external loads are resisted by deformation and pretension. In the field of construction, in order to solve the problems that steel purlins have large mid-span deformation, short horizontal distance support and the like in the enclosure support or retaining support structure of a large-scale deep foundation pit, the conventional method is to increase the size of a steel beam, add mid-span diagonal braces, diagonal braces or anchor rods and the like, but the problems that the occupied inner side space is large, steel is consumed and the like occur, and the applicability of the anchor rods to the cofferdam in water is poor.
Aiming at the problems, an enclosing purlin or a supporting system similar to a beam string is proposed, for example, the patent number is CN201310078649.0, and the patent is a Chinese patent invention named as a prestressed beam for foundation pit supporting, the prestressed beam protected by the patent comprises a lower beam string tightly attached to the enclosing purlin, a web member is arranged on the lower beam string, the web member extends to the inner side of the foundation pit, a steel strand is arranged at the top of the web member, two ends of the steel strand are connected with two ends of the lower beam string, and the steel strand and the lower beam string form a closed structure; two ends of the lower chord beam are provided with tensioning devices for tensioning the steel strands; the lower chord beam is an H-shaped steel or a combined beam of the H-shaped steel and reinforced concrete; the web members are H-shaped steel or H-shaped steel and reinforced concrete combined beams; the top of the web member is provided with a sliding groove for enabling the steel strand to slide and transit, the sliding groove is in a bent arc shape, the steel strand passes through the sliding groove, the sliding groove is divided into a plurality of layers in the vertical direction, and a partition plate is arranged between the layers; the waist part of the web member is provided with a connecting rod which connects the web members with each other; the prestressed beam is connected with a vertical upright post. The rigidity of the prestressed beam is adjusted by tensioning the steel strand, and the prestressed beam for foundation pit support has the advantages of large rigidity, large span, small deformation, convenience in construction, recoverability, reusability and the like, so that the aims of shortening the construction period and reducing the construction cost are fulfilled.
The prestressed structure to which the invention relates still has some drawbacks:
1. the space is narrow, the number of the steel strands which can pass through is limited, the balance force which can be improved is limited, and the maximum span of the beam string (or the fish-belly beam) is not large;
2. when a plurality of steel strands are adopted, the tensioning and anchoring arrangement of the ends of the steel strands is complex, and the construction is inconvenient;
3. the steel strand has certain requirements on the bending radius of the corner, so that a plurality of butt braces are generally combined in the prior art, the linear shape of the steel strand is a smooth curve to meet the linear shape requirements of the steel strand, but the complexity and the dead weight of the structure are increased, the construction is not facilitated, and the structure in a cantilever state has the risk of downward overturning;
4. when the steel strand is tensioned, the steel strand and the corner are subjected to relative displacement in a mutual friction mode, so that the risk of wire breakage of the steel strand is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem mentioned in the background art and providing a steel wire rope stretching method beam-type supporting structure.
The technical scheme of the utility model is that: the utility model provides a steel wire rope stretching method beam string formula bearing structure, includes the support girder, its characterized in that: a plurality of groups of top support cylinders which are arranged at intervals along the length direction of the support main beam are arranged on the side part of the support main beam; the jacking cylinder is an overhanging structure with one end fixed on the side part of the supporting main beam and the other end extending along the length direction of the vertical supporting main beam, and one end of the jacking cylinder, which is far away from the supporting main beam, is connected with a tensioning cable; the tensioning cable is arranged along the length direction of the supporting main beam, one end of the tensioning cable is connected to the supporting main beam, and a tensioning structure for tensioning and locking or loosening the tensioning cable is arranged between the other end of the tensioning cable and the supporting main beam; the cable body between the two ends of the tensioning cable is sequentially connected to one end, far away from the supporting main beam, of the multiple groups of top supporting cylinders, and the top supporting cylinders are pressed through tensioning of the tensioning structure.
The tensioning structure further comprises a counter-force seat anchored on the support main beam and a chain block fixed on the counter-force seat; one end of the chain block is fixed on the counter-force seat, and the other end of the chain block is fixedly connected with the end part of the tension cable.
And a reinforcing structure for connecting the two groups of top support cylinders is arranged between the two groups of adjacent top support cylinders.
The reinforcing structure further comprises a top bracing parallel connection arranged between two adjacent top bracing cylinders; the top support parallel connection is a beam structure with two ends respectively fixed on the two top support cylinders.
The reinforcing structure further comprises an inclined angle brace arranged between the top bracing cylinder and the top bracing parallel connection; the inclined angle brace is horizontally arranged in an inclined mode, and two sections of the inclined angle brace are respectively anchored on the top brace cylinder and the top brace parallel connection.
The reinforcing structure further comprises a bracket arranged at the lower end of the top bracing cylinder; the bracket is of an inclined strut type structure which is arranged along the vertical direction in an inclined mode, and bracket parallel connection is arranged between two brackets of two adjacent groups of top strut cylinders; the bracket parallel connection is arranged along the length direction of the support main beam, and two ends of the bracket parallel connection are respectively fixed on two adjacent brackets.
A top support pulley is arranged at one end of the top support cylinder, which is far away from the support main beam; the top support pulley is connected to the top support barrel through a plug pin which is vertically arranged; the tensioning cable is wound on the top support pulley and is connected with the top support pulley in a sliding mode.
Further, one end of the tensioning cable is fixed on the side of the supporting main beam through the tensioning structure, and the other end of the tensioning cable is provided with a sliding structure which prevents the tensioning cable from generating rigid friction with the supporting main beam when the tensioning cable moves in a stretching mode.
The sliding structure further comprises a main beam pulley fixed on the side of the supporting main beam through a bolt; and the other end of the tensioning cable is wound on the main beam pulley and is connected with the main beam pulley in a sliding manner.
The utility model has the advantages that: 1. the tensioning structure is arranged on one side of the tensioning cable, and the tensioning cable and the support main beam are connected through the tensioning structure, so that the tensioning cable can be conveniently and rapidly tensioned and locked or loosened, the whole operation construction is very simple and convenient, a large tensioning structure is not required to be introduced, the occupied space is small, and the construction efficiency can be greatly improved;
2. the combined structure of the chain block and the counter-force seat is used for tensioning, the structure is very simple, the used equipment materials are cheap and easy to obtain, the structure is convenient to popularize and use, and the used materials are very convenient;
3. the reinforcing structure is arranged between the adjacent shoring structures, so that the stability of the whole shoring structure can be effectively improved, the integral stability and safety of the structure in the construction process are ensured, and the integrity of all the shoring structures is maintained by using the shoring parallel connection, the shoring transverse cylinder, the bracket and the bracket parallel connection;
4. the cantilever end of the inner jacking cylinder is provided with the jacking pulley, so that rigid friction between the tensioning cable and the inner jacking cylinder can be avoided, the construction safety is improved, and the risk of damage caused by tensioning friction is reduced;
5. through set up the girder pulley in a stay cable one end, can avoid a stay cable because with the loss problem that supports the girder and produce the rigidity friction, improved the security and the stability of construction in the tensioning process.
The utility model discloses simple structure, the installation operation construction is very convenient, and the material that just uses is also cheap easily to be obtained, has increased substantially efficiency of construction and application scope, has very big spreading value.
Drawings
FIG. 1: the top view of the utility model;
FIG. 2: the front view of the utility model;
FIG. 3: the side view of the utility model;
FIG. 4: the utility model is a schematic drawing of a tension structure;
wherein: 1-supporting a main beam; 2-stretching a cable; 3, supporting the cylinder; 4-counter-force seat; 5, pulling a chain block; 6, carrying out top bracing parallel connection; 7-diagonal brace; 8-bracket; 9-bracket parallel connection; 10-a top bracing pulley; 11-main beam pulley.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in fig. 1 to 4, the supporting structure of the present embodiment includes a supporting main beam 1, the supporting main beam 1 is a beam structure horizontally arranged along a horizontal direction, a tensioning cable 2 is disposed on a lateral side of the supporting main beam 1, one end of the tensioning cable 2 is fixed on a lateral side of the supporting main beam 1 through a tensioning structure, and the other end of the tensioning cable is provided with a sliding structure for preventing the tensioning cable 2 from generating rigid friction with the supporting main beam 1 when the tensioning cable 2 moves telescopically. As shown in fig. 1 to 3, the sliding structure includes a main beam pulley 11 fixed on the side of the main beam 1 by a bolt, and the other end of the tension cable 2 is wound on the main beam pulley 11 and is connected with the main beam pulley 11 in a sliding manner. The girder pulley 11 can avoid the tension cable 2 in the tension process, because the tension cable 2 moves and the rigid abrasion problem caused by the girder 1 is supported, the safety of the whole structure is improved.
The tension structure of this embodiment is as shown in fig. 4, including fixing the counter-force seat 4 on supporting girder 1, installs chain block 5 on the counter-force seat 4, and 5 one end of chain block are fixed on counter-force seat 4, and the tip of opening the cable 2 is connected to the other end, and during the in-service use, carries out quick stretch-draw locking or lax to opening cable 2 through chain block 5, and the installation operation is very convenient.
This embodiment is provided with the brace section of thick bamboo 3 that the multiunit was arranged along supporting 1 length direction interval of girder between tensioning cable 2 and supporting girder 1, as shown in fig. 1 ~ 3, the brace section of thick bamboo 3 of this embodiment is the structure of encorbelmenting that one end was fixed at supporting 1 lateral part of girder, the other end extends along the vertical support girder 1 length direction. The one end that props a section of thick bamboo 3 and keep away from supporting girder 1 is provided with props pulley 10, props pulley 10 through following vertical arrangement's latch connection in propping a section of thick bamboo 3, opens cable 2 winding and props pulley 10 sliding connection with propping on propping pulley 10.
In order to improve the stability and safety of the whole structure, the reinforcing structure for connecting two groups of top bracing structures is arranged between two adjacent groups of top bracing cylinders 3. As shown in fig. 1 to 3, the reinforcing structure of the present embodiment includes three types:
the first reinforcing structure comprises a top bracing flat connection 6 arranged between two adjacent top bracing cylinders 3, wherein the top bracing flat connection 6 is a beam structure with two ends fixed on the two top bracing cylinders 3 respectively.
The second reinforcing structure comprises an inclined angle support 7 arranged between a top support cylinder 3 and a top support parallel connection 6, wherein two ends of the inclined angle support 7 are respectively fixed on the top support cylinder 3 and the top support parallel connection 6.
The third kind of reinforced structure is including setting up in the bracket 8 of a shoring section of thick bamboo 3 lower extreme, and bracket 8 is the bracing formula structure of arranging along vertical slope, is provided with bracket tie 9 between two brackets 8 of two adjacent groups of shoring section of thick bamboos 3, and bracket tie 9 arranges along supporting 1 length direction of girder, and both ends are fixed respectively on two adjacent brackets 8.
During actual construction: 1. the method comprises the steps of completing supporting a main beam 1 in advance in a machining field, connecting and assembling a top support rod system (comprising a top support cylinder 3, a pin shaft, a top support pulley 10, a top support flat joint 6 and an inclined angle support 7), and connecting the top support rod system with the main beam 1 through the end part of the top support cylinder 3;
2. the supporting main beam 1 and the top brace rod system are installed on a supporting structure together, a supporting bracket 8 is used for reinforcement, and a bracket parallel connection 9 is adopted to increase stability;
3. installing a counterforce seat system, namely installing a connecting steel plate according to a design position and requirements, and then installing a pin shaft and a pulley main beam pulley 11;
4. installing an inhaul cable system, namely installing an inhaul cable 2 according to a designed route, and then connecting by adopting the connector;
5. finally, a tensioning system is installed, a tensioning counterforce seat 4 is installed and fixed according to the designed position, and then a pin shaft and a chain block 5 are installed, wherein one end of the chain block 5 is fixed on the counterforce seat 4, the other end of the chain block is connected with an auxiliary tensioning cable, and the auxiliary tensioning cable is connected with the end part of the tensioning cable 2;
6. in the using stage, the chain block 5 is used for tensioning the tensioning cable 2 to the designed elongation, then the connector with the adjustable length is screwed, the chain block 5 is unloaded, and the whole structure enters a working state;
7. when the pull chain hoist 5 is used for force conversion during the dismantling process, the tension cable 2 is gradually led to enter a loose state, and then other structures are dismantled.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a steel wire rope stretching method beam string formula bearing structure, includes support girder (1), its characterized in that: a plurality of groups of top supporting cylinders (3) which are arranged at intervals along the length direction of the supporting main beam (1) are arranged on the side part of the supporting main beam (1); the jacking cylinder (3) is of an overhanging structure, one end of the overhanging structure is fixed on the side part of the supporting main beam (1), and the other end of the overhanging structure extends along the length direction of the vertical supporting main beam (1), and one end, far away from the supporting main beam (1), of the jacking cylinder (3) is connected with a tension cable (2); the tensioning cable (2) is arranged along the length direction of the supporting main beam (1), one end of the tensioning cable is connected to the supporting main beam (1), and a tensioning structure for tensioning and locking or loosening the tensioning cable (2) is arranged between the other end of the tensioning cable and the supporting main beam (1); the cable body between the two ends of the tensioning cable (2) is sequentially connected to one end of the multi-group top support cylinder (3) far away from the support main beam (1), and the compression on the top support cylinder (3) is realized through tensioning of the tensioning structure.
2. The steel wire rope tensioning chord beam type supporting structure according to claim 1, characterized in that: the tensioning structure comprises a counter-force seat (4) anchored on the support main beam (1) and a chain block (5) fixed on the counter-force seat (4); one end of the chain block (5) is fixed on the counter-force seat (4), and the other end is fixedly connected with the end part of the tension cable (2).
3. A steel cable tensioned chord beam type supporting structure according to claim 1 or 2, characterized in that: a reinforcing structure used for connecting the two groups of top bracing cylinders (3) is arranged between the two adjacent groups of top bracing cylinders (3).
4. The steel wire rope tensioning chord beam type supporting structure according to claim 3, characterized in that: the reinforcing structure comprises a top bracing parallel connection (6) arranged between two adjacent top bracing cylinders (3); the top bracing parallel connection (6) is a beam structure with two ends respectively fixed on the two top bracing cylinders (3).
5. The steel wire rope tensioning chord beam type supporting structure according to claim 4, characterized in that: the reinforced structure also comprises an inclined angle brace (7) arranged between the top brace cylinder (3) and the top brace horizontal connection (6); the inclined angle brace (7) is arranged along the horizontal inclination, and two sections of the inclined angle brace are respectively anchored on the top brace cylinder (3) and the top brace parallel connection (6).
6. A steel cable tensioned wishbone support structure as claimed in claim 4 or 5 wherein: the reinforcing structure also comprises a bracket (8) arranged at the lower end of the top supporting cylinder (3); the corbels (8) are of inclined strut type structures which are vertically and obliquely arranged, and a corbel parallel connection (9) is arranged between two corbels (8) of two adjacent groups of top supporting cylinders (3); the bracket parallel connection (9) is arranged along the length direction of the support main beam (1), and two ends of the bracket parallel connection are respectively fixed on two adjacent brackets (8).
7. The steel wire rope tensioning chord beam type supporting structure according to claim 1, characterized in that: one end of the top support cylinder (3) far away from the support main beam (1) is provided with a top support pulley (10); the top support pulley (10) is connected to the top support barrel (3) through a bolt which is vertically arranged; the tensioning cable (2) is wound on the top support pulley (10) and is connected with the top support pulley (10) in a sliding mode.
8. The steel wire rope tensioning chord beam type supporting structure according to claim 1, characterized in that: open cable (2) one end and pass through tension structure and fix the lateral part at support girder (1), the other end is provided with avoids opening cable (2) and support girder (1) and produce the frictional sliding structure of rigidity when opening cable (2) flexible removal.
9. The steel wire rope tensioning chord beam type supporting structure according to claim 8, characterized in that: the sliding structure comprises a main beam pulley (11) fixed on the side of the main support beam (1) through a bolt; the other end of the tension cable (2) is wound on the main beam pulley (11) and is connected with the main beam pulley (11) in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020256551.5U CN211816286U (en) | 2020-03-05 | 2020-03-05 | Steel wire rope stretching method beam-string type supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020256551.5U CN211816286U (en) | 2020-03-05 | 2020-03-05 | Steel wire rope stretching method beam-string type supporting structure |
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| CN211816286U true CN211816286U (en) | 2020-10-30 |
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| CN202020256551.5U Active CN211816286U (en) | 2020-03-05 | 2020-03-05 | Steel wire rope stretching method beam-string type supporting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921982A (en) * | 2021-01-29 | 2021-06-08 | 江苏三力岩土科技有限公司 | Independent large-span deep foundation pit prestressed steel supporting system |
| CN113615967A (en) * | 2021-09-24 | 2021-11-09 | 震旦（中国）有限公司 | Table and stay cable cross beam structure thereof |
-
2020
- 2020-03-05 CN CN202020256551.5U patent/CN211816286U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921982A (en) * | 2021-01-29 | 2021-06-08 | 江苏三力岩土科技有限公司 | Independent large-span deep foundation pit prestressed steel supporting system |
| CN113615967A (en) * | 2021-09-24 | 2021-11-09 | 震旦（中国）有限公司 | Table and stay cable cross beam structure thereof |
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