CN-121976566-A - Pile foundation construction platform and hanging box bottom plate integrated structure and construction method

CN121976566ACN 121976566 ACN121976566 ACN 121976566ACN-121976566-A

Abstract

The application discloses a pile foundation construction platform and a hanging box bottom plate integrated structure and a construction method, which belong to the technical field of pile foundation construction, and concretely comprise the following steps of S1, erecting a construction platform, driving a plurality of temporary support piles at preset installation positions, and erecting an integrated platform bottom plate structure at the top of each temporary support pile; the pile foundation construction method comprises the steps of S2, pile foundation construction, pile forming construction of engineering piles on an integrated platform bottom plate structure, S3, erection of side plates on the top of the integrated platform bottom plate structure, S4, platform lowering, hoisting of a formed hanging box, connection of temporary supporting piles and the integrated platform bottom plate structure is released, temporary supporting piles are removed, the formed hanging box is hoisted and lowered to a designated position of the engineering piles, S5, pile cap construction, sealing treatment is conducted on gaps of the hanging box, water pumping is conducted on the hanging box, and pouring of the pile cap is achieved in a layered mode. The application has the effects of reducing the construction period of the bearing platform forming and improving the construction efficiency.

Inventors

ZHANG YONG
ZHANG QIAN
XIA GUOFEI
ZENG HAO
WU MIN
XIONG BO
CHEN SENQUAN
LIU YUNFENG
ZHANG CHEN

Assignees

中国铁建港航局集团有限公司

Dates

Publication Date: 20260505
Application Date: 20260116

Claims (10)

1. S1, erecting a construction platform, driving a plurality of temporary support piles (1) at preset mounting positions, and erecting an integrated platform bottom plate structure (2) at the top of each temporary support pile (1) to form a pile foundation construction platform; s2, pile foundation construction, wherein pile forming construction of each engineering pile (101) is carried out on the integrated platform bottom plate structure (2); S3, erecting a side plate (22), and erecting the side plate (22) on the top of the integrated platform bottom plate structure (2) to realize the molding of the hanging box; S4, lowering the platform, hoisting the formed hanging box, removing the connection between the temporary support pile (1) and the integrated platform bottom plate structure (2), then removing the temporary support pile (1), and hoisting the formed hanging box to a designated position of the engineering pile (101); s5, the bearing platform is constructed, sealing treatment is carried out on the gap of the hanging box, then water pumping is carried out on the hanging box, and pouring of the bearing platform is achieved through layering.
2. The construction method of the pile foundation construction platform and hanging box bottom plate integrated structure according to claim 1, wherein in the step S1, a support beam assembly is arranged between the temporary support piles (1) and the integrated platform bottom plate structure (2), the support beam assembly comprises a plurality of bailey beams (3) and I-beams (4), the bailey beams (3) are connected end to end in sequence, two ends of the same bailey beam (3) are fixedly arranged on two adjacent temporary support piles (1) respectively, the I-beams (4) are arranged at the tops of the bailey beams (3) and are uniformly distributed along the length direction of the bailey beams (3), and the integrated platform bottom plate structure (2) is fixedly arranged at the tops of the I-beams (4).
3. The construction method of the pile foundation construction platform and hanging box bottom plate integrated structure according to claim 2, wherein two adjacent bailey beams (3) are respectively arranged as a first bailey beam (301) and a second bailey beam (302), one end of the first bailey beam (301) facing the second bailey beam (302) is integrally and fixedly connected with a connecting plug (5), one end of the second bailey beam (302) facing the first bailey beam (301) is provided with a connecting slot (6) which vertically penetrates through and is in plug-in fit with the connecting plug (5), the first bailey beam (301) and the second bailey beam (302) are fixed through a connecting bolt (31), and the connecting bolt (31) is arranged on the connecting slot (6) and the connecting plug (5) in a penetrating mode along the horizontal direction.
4. The construction method of the pile foundation construction platform and hanging box bottom plate integrated structure according to claim 1, wherein in the step S3, an outer support assembly is arranged between the side plate (22) and the integrated platform bottom plate structure (2), the outer support assembly comprises a rotating sleeve rod (9) and a mounting bottom plate (10), the rotating sleeve rod (9) comprises an outer support outer rod (901), an outer support inner rod (902) and a rotating ring (903), the outer support outer rod (901) is rotatably mounted on the side plate (22), the rotating ring (903) is rotatably mounted on one end, far away from the side plate (22), of the outer support outer rod (901) and is in threaded fit with the rotating ring (903), the outer support inner rod (902) is arranged in a penetrating mode and is in sliding fit with the outer support outer rod (901), the outer support outer rod (901) is provided with a rotating limiting piece for limiting the rotation of the outer support inner rod (902), the mounting bottom plate (10) is rotatably mounted on the outer support inner rod (902) and is far away from the outer support outer rod (901), and the mounting bottom plate (2) is fixedly connected with the integrated bottom plate structure through bolts.
5. The construction method of the integrated structure of the pile foundation construction platform and the hanging box bottom plate, as set forth in claim 1, characterized in that in the step S4, the engineering pile (101) is fixedly provided with a bearing cross beam (14) at a designated position, a bearing reinforcing rib (15) is fixedly arranged between the bearing cross beam (14) and the engineering pile (101), and when the formed hanging box is hung from the lower part to the designated position of the engineering pile (101), the bottom of the hanging box is abutted against the top of the bearing cross beam (14).
6. The construction method of the integrated structure of the pile foundation construction platform and the hanging box bottom plate, as set forth in claim 5, characterized in that the bearing cross beam (14) comprises a cross beam body (141), a bearing beam body (142) and a bearing adjusting assembly, the cross beam body (141) is fixedly connected with the engineering pile (101) and the bearing reinforcing rib (15), the bearing adjusting assembly is arranged on the cross beam body (141) and is used for adjusting the height of the bearing beam body (142), and when the formed hanging box is hung below to a designated position of the engineering pile (101), the bottom of the hanging box is abutted against the top of the bearing beam body (142).
7. The construction method of the integrated structure of the pile foundation construction platform and the hanging box bottom plate according to claim 6, wherein the bearing adjusting assembly comprises an adjusting screw rod (16) and an adjusting guide rod (17), the adjusting screw rod (16) is rotatably installed at the bottom of the bearing beam body (142), the adjusting screw rod (16) is penetrated and in threaded fit with the beam body (141), the adjusting guide rod (17) is fixedly installed at the bottom of the bearing beam body (142), and the adjusting guide rod (17) is penetrated and in sliding fit with the beam body (141).
8. The construction method of the integrated pile foundation construction platform and hanging box bottom plate structure according to claim 1, wherein in the step S4, when the temporary support pile (1) is dismantled, a construction diver uses underwater cutting equipment to cut and remove the temporary support pile (1) at a preset height under water.
9. The construction method of the pile foundation construction platform and hanging box bottom plate integrated structure according to claim 8, wherein the temporary supporting pile (1) is fixedly provided with a plurality of hooking portions (13), the hooking portions (13) are uniformly distributed circumferentially around the axis of the temporary supporting pile (1), and when the temporary supporting pile (1) is cut off and removed at a preset height, the temporary supporting pile (1) is firstly hung and locked through a plurality of ropes respectively connected with the hooking portions (13).
10. The pile foundation construction platform and hanging box bottom plate integrated structure is used for the construction method of the pile foundation construction platform and hanging box bottom plate integrated structure according to any one of claims 1 to 9, and is characterized by comprising a platform body (21), wherein the platform body (21) is provided with a plurality of avoidance holes (7), the avoidance holes (7) are respectively used for piling construction on engineering piles (101), the platform body (21) is provided with annular reinforcing ribs (8) which are arranged in one-to-one correspondence with the avoidance holes (7), and the avoidance holes (7) are respectively located in surrounding areas of the annular reinforcing ribs (8).

Description

Pile foundation construction platform and hanging box bottom plate integrated structure and construction method Technical Field The invention relates to the field of pile foundation construction, in particular to a pile foundation construction platform, a hanging box bottom plate integrated structure and a construction method. Background In the field of deep water bridge foundation engineering construction, when a bearing platform for supporting a bridge is formed, a traditional method generally needs to adopt a temporary construction platform to carry out pile foundation construction firstly, then a hanging box is erected, the hanging box is erected to integrally hoist a hanging box bottom plate mainly through a large-scale floating crane, the bottom plate of the hanging box is lowered to a designed elevation from each finished pile foundation, then a side plate of the hanging box is erected, and the bearing platform is poured in the hanging box template after sealing and pumping are carried out in the enclosed hanging box template. However, the above-mentioned traditional method is set up temporary construction platform and the erection of bottom plate in practice and need go on step by step in proper order, this step by step independent linear flow for the fashioned construction cycle of cushion cap is lengthy, and the accurate alignment of bottom plate preformed hole and pile foundation and complicated leaking stoppage operation all need consume a large amount of time to carry out fine adjustment, seriously influence the efficiency of construction. Disclosure of Invention The application provides a pile foundation construction platform and a hanging box bottom plate integrated structure and a construction method for reducing the construction period of bearing platform forming and improving the construction efficiency. In a first aspect, the application provides a construction method of a pile foundation construction platform and a hanging box bottom plate integrated structure, which adopts the following technical scheme: A construction method of a pile foundation construction platform and a hanging box bottom plate integrated structure comprises the following steps of S1, erecting a construction platform, driving a plurality of temporary support piles at preset installation positions, erecting the integrated platform bottom plate structure at the top of each temporary support pile to form the pile foundation construction platform, S2, constructing the pile foundation, piling each engineering pile at the integrated platform bottom plate structure, S3, erecting side plates at the top of the integrated platform bottom plate structure to achieve hanging box forming, S4, lowering the platform, hoisting the formed hanging box, removing the connection between the temporary support piles and the integrated platform bottom plate structure, then removing the temporary support piles, hoisting the formed hanging box to the designated position of the engineering pile, S5, constructing a bearing platform, sealing the gap of the hanging box, pumping water from the hanging box, and layering to achieve pouring of the bearing platform. Through adopting above-mentioned technical scheme, the construction process is integrated into integrated structure with pile foundation construction platform and hanging box bottom plate, directly utilizes this structure to form the hanging box and transfer after pile foundation construction is accomplished, the quick realization of being convenient for is to the pouring shaping of cushion cap, effectively avoided construction platform and the setting up of bottom plate in traditional technology to demolish the loaded down with trivial details process that needs going on step by step in proper order, reduced cushion cap fashioned construction period, and the accessible pile foundation directly leads to the transfer of hanging box after pile foundation shaping in the work progress, effectively improved the efficiency of construction. Optionally, in the step S1, a support beam assembly is disposed between the temporary support piles and the integrated platform bottom plate structure, the support beam assembly includes a plurality of bailey beams and i-beams, the bailey beams are connected end to end in sequence, two ends of a same bailey beam are respectively and fixedly mounted on two adjacent temporary support piles, the i-beams are disposed at the tops of the bailey beams and are uniformly distributed along the length direction of the bailey beams, and the integrated platform bottom plate structure is fixedly mounted at the tops of the i-beams. Through adopting above-mentioned technical scheme, built stable braced system, utilized the outstanding bending resistance of bailey beam to stride across the great distance between two adjacent temporary support stake, be favorable to reducing the setting quantity of temporary support stake, reduce construction cost, and adopt the I-steel as the