CN204125899U - A kind of long piled wharf super large framed bent cast-in-situ pile cap bed die support system - Google Patents

Abstract

The utility model provides a support system for the bottom formwork of cast-in-place piers with super-large bent frames of high-piled wharfs, including: pile foundations, steel hoops, main girders, support beams, trusses and cast-in-place piers; Arranged in two rows, respectively arranged at the bottom of the left and right sides of the cast-in-place abutment, the pile foundations on the left and right sides are aligned one by one in the horizontal direction; a steel hoop is fixed outside each pile foundation; above the steel hoop A group of main beams are arranged horizontally and longitudinally on the left and right sides of each pile foundation; supporting beams are horizontally and horizontally arranged above the main beams, and supporting beams are horizontally arranged on the front and rear sides of each pile foundation; Above, a set of trusses are arranged on the two pile foundations horizontally aligned on the left and right sides. The column foot of the truss is welded to the upper surface of the support beam through a thick steel plate seat; the cast-in-place pier is erected horizontally on the truss. The utility model uses a truss to support the lower part of the cast-in-place pier, which increases the bearing capacity of the support system, thereby increasing the distance between the bent frames.

Description

A support system for cast-in-situ cast-in-place piers and abutments with super-large bent frames for high-piled wharves

technical field

The utility model relates to the field of port engineering construction, in particular to a support system for the bottom formwork of cast-in-situ piers and abutments of super-large bent frames of high-pile wharfs.

Background technique

At present, in the design of high-piled wharf, the pier structure has been widely used because of its good integrity, simple structure, and large load bearing. However, due to the large size and weight of piers and abutments, the design and construction of the bottom formwork support system is the key to ensure the quality and safety of the project.

The conventional bent frame spacing of high-piled wharves is generally 7m to 9m. The construction technology of the formwork support system at the bottom of the cast-in-place pier usually adopts the combination of anti-hanging tie rods and section steel (I-steel and channel steel) or steel hoops and section steel (I-steel) and channel steel) combined form, can meet the requirements. However, with the advancement of science and technology, and in order to save investment and control engineering construction costs, the design bent spacing of high-piled wharfs is changing from conventional bent spacing to super-large bending spacing. high demands. At present, the largest frame spacing in China is 16m, and the bottom formwork support system adopts the combination of steel hoop + section steel (I-beam and channel steel) + truss. However, the carrying capacity of super-large bent frames is generally low, and the middle part of the bent frame is not enough to bear the weight and load of the cast-in-place piers. Forcibly increasing the space between bent frames will only make the high loading dock face the risk of collapse at any time.

It is not difficult to see that there are certain defects in the prior art.

Utility model content

The technical problem to be solved by the utility model is to provide a support system for the bottom formwork of the cast-in-place pier and abutment with a super-large bent frame of a high-pile wharf, which adopts trusses to support the lower part of the cast-in-place abutment, increases the bearing capacity of the support system, and increases the distance between the bent frames .

In order to achieve the above object, the utility model adopts the following technical solutions:

A bottom formwork support system for cast-in-situ piers with super-large bent frames for high-piled wharfs, including: pile foundations, steel hoops, main girders, support beams, trusses, and cast-in-place piers; the pile foundations are arranged in two rows in the longitudinal direction, They are respectively arranged at the bottom of the left and right sides of the cast-in-place piers, and the pile foundations on the left and right sides are aligned one by one in the horizontal direction; a steel hoop is clamped and fixed outside each pile foundation; the left and right sides above the steel hoop are horizontal There is a set of main beams in the longitudinal direction; support beams are set horizontally above the main beams, and support beams are set horizontally on the front and rear sides of each pile foundation; trusses are erected horizontally on the support beams, and the left and right sides A group of trusses are correspondingly arranged on the two pile foundations aligned horizontally, and the column feet of the trusses are welded to the upper surface of the support beam through a thick steel plate; the cast-in-place piers are erected horizontally on the trusses.

Further, the pile foundations are grouped in pairs in the longitudinal direction, and each group of pile foundations is inclined inward in the longitudinal direction to form a "Λ"-shaped structure.

Further, the steel hoop includes: two opposite semi-circular hoops and a rubber pad between the semi-circular hoops and the pile foundation; each semi-circular hoop is in the form of a semi-circular shape, with a corbel extending radially outwards, The end of the half-round hoop is provided with a flange with a mounting hole, and the flanges of the two half-round hoops are facing each other. There is a gap of 3mm-5mm between the flanges, which are fastened by high-strength bolts. Each corbel is connected to a The set of double girders is welded and fixed.

Further, the main girder is a double I-beam group consisting of two side-by-side I-beams.

Further, the support beam is composed of 4 side-by-side channel steels, and the 4 channel steels form two sets of rectangular beams side by side.

Further, the truss is a rectangular truss, including: upper chords, lower chords, vertical webs, diagonal webs and column feet; upper chords and lower chords are horizontally and horizontally arranged in parallel; Between the lower chords, the two ends of the vertical webs are respectively connected with the upper chord and the lower chord, and the interval between two adjacent vertical webs is the internode of the truss; each internode of the truss is inclined with a diagonal web, The two ends of the diagonal webs are respectively connected with the upper chord and the lower chord, and the end-to-end connection between two adjacent diagonal webs forms a triangular structure; the column feet are supported at the bottom of the truss, and are welded to the top of the support beam through a thick steel plate seat surface.

The utility model provides a support system for the cast-in-place pier and abutment bottom form of a super-large bent frame of a high-pile wharf, which has the following advantages:

The truss has high rigidity, good auxiliary support for cast-in-situ piers, construction safety can be guaranteed, and the support is stable and reliable, thus providing conditions for increasing the spacing between bent frames;

Compared with concrete beams, trusses are light in weight, which can greatly reduce the amount of materials used, and the disassembly and assembly are simple and quick, improving construction efficiency;

The increased spacing between the racks reduces construction consumables, saves construction time, and effectively reduces construction costs.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a top view of a bottom mold support system for cast-in-place piers and abutments of a super-large bent frame of a high-pile wharf provided by an embodiment of the utility model.

FIG. 2 is a cross-sectional view along line A-A of FIG. 1 .

Fig. 3 is a B-B sectional view of Fig. 1 .

Figure 4 is the top view of the steel hoop.

Fig. 5 is a structural schematic diagram of the truss.

Explanation of reference signs:

1. Pile foundation 2. Steel hoop

3. Main beam 4. Support beam

5. Truss 6. Cast-in-place piers

7. Half round hoop 8. Flange

9. Corbel 10. Rubber pad

11. Pillar foot 12. Upper chord

13. Bottom chord 14. Vertical web bar

15. Diagonal rod

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model and the accompanying drawings. It should be noted that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Example

Please refer to Fig. 1 to Fig. 3, the present embodiment discloses a super-large bent frame cast-in-situ pier abutment 6 bottom form support system for a high-pile wharf, including: pile foundation 1, steel hoop 2, main beam 3, support beam 4 . A steel hoop 2 is clamped and fixed outside the pile foundation 1; a group of main beams 3 are arranged horizontally and longitudinally on the left and right sides above the steel hoop; a support beam 4 is horizontally and horizontally arranged on the main beam 3, and each The front and rear sides of the pile foundation 1 are provided with supporting beams 4 horizontally; The column feet 11 are vertically welded to the upper surface of the support beam 4 through a thick steel plate; the cast-in-place piers 6 are erected horizontally on the truss 5 .

The truss 5 arranged under the cast-in-place abutment 6 is the technical core of the present invention. The truss 5 not only provides supporting force for the cast-in-place abutment 6, but also creates conditions for the construction of super-large bent frames, and has less consumable materials and weighs less Lighter, reducing the construction period and construction costs. The steel hoops 2 are clamped and fixed on the pile foundation 1 , and each steel hoop 2 forms an installation platform for erecting the main beam 3 .

Preferably, the pile foundations 1 are grouped in pairs in the longitudinal direction, and each group of pile foundations 1 is inclined inward in the longitudinal direction to form a "Λ"-shaped structure. Compared with the completely vertical pile foundation 1, this kind of inclined pile foundation 1 is beneficial to provide the ability of longitudinal loading for the cast-in-place pier 6, and the two pile foundations 1 inclined inwardly interact with each other to form a lower center of gravity, Support more stable pile foundation 1 group.

Please refer to Fig. 4, as a preference, the steel hoop 2 includes: two opposite semicircular hoops 7, and a rubber pad 10 between the semicircular hoops 7 and the pile foundation 1; each semicircular hoop 7 is semi-circular , a corbel 9 extending radially outward, a flange 8 with a mounting hole is provided at the end of the semicircle hoop 7, flanges 8 of the two semicircle hoops 7 are arranged facing each other, and a 3mm- The 5mm gap is fastened by high-strength bolts, and each corbel 9 is welded and fixed with a group of double main beams 3 .

After the steel hoop 2 hugs the surface of the pile foundation 1 tightly, it is realized to hug and fix by the friction force with the surface of the pile foundation 1 . In order to increase the frictional force and at the same time ensure that the semi-circular hoop 7 and the pile foundation 1 will not be damaged due to rigid contact, a rubber pad 10 is provided between the semi-circular hoop 7 and the pile foundation 1 . The corbel 9 is an installation platform for erecting the main beam 3. There is a gap between the flanges 8 facing the two halves of the hoops 7 to ensure that the flanges 8 will not collide and die when the steel hoops 2 are tightly held. .

Preferably, the main girder 3 is a double I-beam group consisting of two side-by-side I-beams. The support beam 4 is composed of 4 side-by-side channel steels, and the 4 channel steels form two groups of rectangular beams side by side. The main girder 3 and the support beam 4 composed of section steel can ensure stable and reliable support and increase the load-bearing capacity.

Please refer to Fig. 5, as a preference, the truss 5 is a rectangular truss 5, including: the upper chord 12, the lower chord 13, the vertical web 14, the diagonal 15 and the column foot 11; the upper chord 12 and the lower chord 13 are horizontal and transverse Arranged in parallel; the vertical webs 14 are vertically evenly distributed between the upper chord 12 and the lower chord 13, and the two ends of the vertical webs 14 are respectively connected with the upper chord 12 and the lower chord 13, and the vertical webs between two adjacent vertical webs 14 The interval is the internode of the truss 5; each internode of the truss 5 is provided with a diagonal rod 15 obliquely, and the two ends of the diagonal rod 15 are respectively connected with the upper chord 12 and the lower chord 13, and between two adjacent diagonal rods 15 The ends are connected end to end to form a triangular structure; the column base 11 is supported on the bottom of the truss 5, and is welded to the upper surface of the support beam 4 through a thick steel plate.

The truss 5 is a relatively common steel structure support in civil engineering or machinery, and the support structure is rationally designed and optimized through finite element calculation of engineering mechanics. The truss 5 is only composed of angle steel, I-beam and other section steel, which has excellent bearing capacity, small consumables, light weight, low cost, and is easy to assemble and install. In the utility model, multiple sets of horizontally arranged trusses 5 provide strong support for the cast-in-place abutment 6, especially the support capacity of the middle part of the cast-in-place abutment 6 is greatly improved, so even if large-space bent frames are used, the cast-in-place abutment There will be no danger of collapse in the middle of 6, which creates conditions for the design of large-spacing bent shelves.

The utility model provides a support system for the cast-in-situ pier 6 base form of the super-large bent frame of the high-pile wharf. The truss 5 is used to support the bottom of the cast-in-situ abutment 6, and the auxiliary support force for the cast-in-situ abutment 6 is good, and the construction is safe. It can be guaranteed that the support is stable and reliable, thus providing conditions for increasing the spacing of the bent racks. Compared with concrete beams, the truss 5 is light in weight, can greatly reduce the amount of materials used, and is easy and fast to disassemble and assemble, thereby improving construction efficiency. At the same time, under this condition, the distance between the racks increases, which reduces construction consumables, saves construction time, and effectively reduces construction costs.

The above-mentioned embodiment only expresses one implementation mode of the utility model, and its description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (6)

1. a long piled wharf super large framed bent cast-in-situ pile cap bed die support system, is characterized in that, comprising: pile foundation, steel hoop, girder, support beam, truss and cast-in-situ pile cap; Pile foundation is arranged in two row in the vertical, and bottom the left and right sides being arranged in cast-in-situ pile cap respectively, the pile foundation of the left and right sides is alignd in the horizontal one by one; The outer sandwiched of every bar pile foundation is fixed with a steel hoop; Left and right sides level on steel hoop is longitudinally respectively provided with one group of girder; On girder, horizontal cross is provided with support beam, and the both sides, front and back of every bar pile foundation are all laterally provided with support beam; Truss horizontal cross is set up on support beam, and in two pile foundations of left and right sides lateral alignment, correspondence is provided with one group of truss, and the suspension column of truss is connected to the upper surface of support beam by a steel plate seat vertical position welding; Cast-in-situ pile cap level frame is located on truss.

2. long piled wharf super large framed bent cast-in-situ pile cap bed die support system according to claim 1, is characterized in that: described pile foundation is divided into groups in the vertical between two, often organizes pile foundation and slopes inwardly in the vertical, composition " Λ " shape structure.

3. long piled wharf super large framed bent cast-in-situ pile cap bed die support system according to claim 1, it is characterized in that, described steel hoop comprises: two half circular boops be oppositely arranged and every the rubber pad between half circular boop and pile foundation; Each half circular boop is semi-circular, and radial direction stretches out is provided with bracket, and the end of half circular boop is provided with the flange of band installing hole, the flange of two and half circular boops is just to setting, be provided with 3mm-5mm gap between flange, fastening by high strength exploitation, each bracket and one group of two Main Girder Welding are fixed.

4. long piled wharf super large framed bent cast-in-situ pile cap bed die support system according to claim 1, is characterized in that: described girder is by two two i iron groups of forming of i iron side by side.

5. long piled wharf super large framed bent cast-in-situ pile cap bed die support system according to claim 1, is characterized in that: described support beam by 4 side by side channel-section steel form, 4 channel-section steels between two one group form two groups of rectangular beams side by side.

6. long piled wharf super large framed bent cast-in-situ pile cap bed die support system according to claim 1, it is characterized in that, described truss is rectangle truss, comprising: upper chord, lower chord, perpendicular web member, diagonal web member and suspension column; Upper chord and lower chord horizontal cross are arranged in parallel; Perpendicular web member is vertically distributed between upper chord and lower chord, and the two ends of perpendicular web member are connected with upper chord and lower chord respectively, and the interval between adjacent two perpendicular web members is the internode of truss; Each internode of truss tilts to be provided with a diagonal web member, and the two ends of diagonal web member are connected with upper chord and lower chord respectively, end to end formation triangular structure between adjacent two diagonal web members; Suspension column is supported in bottom truss, is connected to the upper surface of support beam by a steel plate seat vertical position welding.