CN-117188476-B - Rapid turnover steel platform for ultra-long bored pile in tidal flat area and construction process of rapid turnover steel platform

Abstract

The invention discloses a rapid turnover steel platform for a very long bored pile in a tidal flat area and a construction process thereof, wherein the rapid turnover steel platform comprises steel pile casings, a slurry circulation system and an assembled platform structure, the steel pile casings are buried in the positions of boring holes, the slurry circulation system comprises a rigid pipeline system, a slurry pond and a tidal flat ground structure for bearing the assembled platform structure, the tidal flat ground structure comprises a trench for arranging the rigid pipeline system, a rammed part formed by backfilling sand after the rigid pipeline system is arranged and rammed and leveling, and a geotechnical cloth layer paved on the rammed part, the rigid pipeline system is connected with each steel pile casing and the slurry pond, the steel pile casings and the rigid pipeline system are fixedly connected, the assembled platform structure is paved on the tidal flat ground structure and the rigid pipeline system, and the assembled platform structure is fixedly connected to the steel pile casings. The invention does not produce solid waste and has smaller influence on the ecological environment of the beach area.

Inventors

• LI YOUWEI
• YIN HONGYANG
• MAO JUNWEI
• HAN PENGPENG
• LI ZHEN
• LI XIANG
• ZHAO QIANG
• YAN WENXIN
• XIE DEKUAN
• XIE YUANPENG
• LUO JINCHENG
• TAO SHENGQIANG
• SUN FAMING
• ZANG JIANFENG
• Xu Sile
• REN WANSHENG

Assignees

• 中交第二航务工程局有限公司
• 中交二航局第四工程有限公司

Dates

Publication Date

20260512

Application Date

20230816

Claims (9)

1. 1. The utility model provides a steel platform is rolled over to ultra-long bored pile fast for beach district, includes steel pile casing (5), mud circulation system (2) and assembled platform structure (1), steel pile casing (5) buries in drilling hole site department, mud circulation system (2) include rigid pipeline system (24), mud pit and bear the beach ground structure of assembled platform structure (1), beach ground structure is including arranging the slot of rigid pipeline system (24), backfill sand soil tamp after arranging rigid pipeline system (24) and level the geotechnique layer of formation on the tamp real part, rigid pipeline system (24) connect each steel pile casing (5) with the mud pit, steel pile casing (5) with rigid pipeline system (24) connect fixedly, assembled platform structure (1) are laid on beach ground structure with rigid pipeline system (24), assembled platform structure (1) is fixedly connected to steel pile casing (5).
2. 2. The rapid turnover steel platform for the ultra-long bored pile in the tidal flat area is characterized in that the steel casing (5) is fixedly connected with the rigid pipeline system (24), the rigid pipeline system (24) comprises a plurality of steel sleeves (242) and steel pipes (241), the steel sleeves (242) are fixedly sleeved outside the steel casing (5), the end parts of the steel pipes (241) are fixedly welded with the steel sleeves (242) and can extend into the steel casing (5), a notch is formed in the position, corresponding to a pipe orifice of the steel pipe (241), of the steel casing (5), angle steel is welded after two sides of the notch are outwards expanded, and gaps between the steel casing (5) and the rigid pipeline system (24) are filled with water stop bars to form parallel slurry channels.
3. 3. The rapid turnover steel platform for the ultra-long bored pile in the tidal flat area is characterized in that the assembled platform structure (1) comprises a rectangular platform assembly, at least two pile foundation hole sites (15) are arranged on the platform assembly, adjacent platform assemblies in the same assembled platform structure (1) are tightly paved and fixedly connected, pile foundation hole sites (15) which are in one-to-one correspondence with the steel casing (5) are arranged on the assembled platform structure (1), and a hole site cover plate is paved on the pile foundation hole sites (15) which are not drilled.
4. 4. The rapid turnover steel platform for the ultra-long bored pile in the tidal flat area according to claim 3 is characterized in that the platform assembly comprises a three-hole platform assembly (13) and a two-hole platform assembly (14), wherein the three-hole platform assembly (13) is provided with three pile foundation hole sites (15) which are uniformly distributed along the length direction of the three-hole platform assembly, and the two-hole platform assembly (14) is provided with two pile foundation hole sites (15) which are uniformly distributed along the length direction of the two-hole platform assembly.
5. 5. The rapid turnover steel platform for the ultra-long bored pile in the tidal flat area according to claim 4, wherein the arrangement shape of the steel casing (5) is rectangular, the assembled platform structure (1) is formed by arranging and splicing a plurality of platform components with the same structure along the same direction, steel pipes (241) are connected between adjacent steel sleeves (242) in the corresponding rigid pipeline system (24), and the steel pipe (241) communicated with a mud pit is fixedly connected with at least one steel sleeve (242) in each end part of the rigid pipeline system (24).
6. 6. The rapid turnover steel platform for the ultra-long bored pile in the tidal flat area according to claim 4, wherein the arrangement shape of the steel casings (5) is circular, one steel casing (5) is positioned at the center of the circular shape, six steel casings (5) are uniformly distributed along the outer circumference of the circular shape, the assembled platform structure (1) is sequentially divided into a two-hole platform assembly (14), a three-hole platform assembly (13) and another two-hole platform assembly (14), the steel guide pipes (241) are connected between every two adjacent steel casings (242) on one circumference, the steel guide pipes (241) are connected between the steel casing (242) positioned at the center and at least two adjacent steel casings (242), the steel guide pipes (241) between the steel casing (242) positioned at the center and the steel guide pipes (241) positioned between the adjacent steel casings (242) are uniformly distributed along the circumference of the steel casing (242) at the center, and at least two adjacent steel casings (242) on the outer circumference are connected with the steel guide pipes (241) communicated with a mud pit.
7. 7. The construction process for the rapid turnover steel platform of the ultra-long bored pile in the beach area according to any one of claims 1 to 6, which is characterized by comprising the following steps: Step one, performing construction preparation; step two, field leveling and planning are carried out; Thirdly, excavating a mud pit and performing anti-seepage treatment, wherein the mud pit excavates soil for filling a construction area; step four, burying a steel pile casing (5); step five, arranging a mud circulation system (2); The method specifically comprises the steps of completing processing and manufacturing of a main body part of a rigid pipeline system (24) in advance, completing slurry pipeline excavation on site, positioning and installing the rigid pipeline system (24), slotting a steel pile casing (5) and performing slurry leakage prevention treatment, effectively filling peripheral gaps by fine sand after the positioning and installing of the rigid pipeline system (24) are completed, tamping the peripheral by adopting a small machine tool, backfilling the top of a parallel joint, backfilling the excavated grooves by sandy soil with good water permeability, paving the backfilled grooves by geotechnical cloth, simultaneously reinforcing the rigid pipeline system (24) in place, and debugging a slurry circulation system (2) after the rigid pipeline system (24) is positioned and installed; step six, installing a rapid turnover steel platform; And seventhly, constructing pile foundations.
8. 8. The construction process for the rapid turnover steel platform of the ultra-long bored pile in the beach area, which is disclosed by claim 7, is characterized in that the slotting and slurry leakage prevention treatment of the steel casing (5) comprises the following steps: 1) Slotting the steel pile casing (5), and sequentially slotting the position corresponding to the pipe orifice of the steel guide pipe (241) after the slurry circulation system (2) is installed in place; 2) The notch slotting slurry stopping device comprises a steel casing (5), angle steel is welded at two sides of a slotting position after slotting is completed, gaps in the steel casing (5) and a rigid pipeline system (24) are plugged through a rubber water stop bar after the angle steel is welded, and other gaps between the steel casing (5) and the rigid pipeline system (24) are backfilled by fine sand; 3) The steel pile casing (5) is fixedly connected with the mud circulation system (2), and a pile casing opening of the steel pile casing (5) is effectively and fixedly connected with the rigid pipeline system (24) by adopting an iron plate.
9. 9. The construction process for the rapid turnover steel platform of the ultra-long bored pile in the beach area according to claim 7, which is characterized in that the sixth step comprises the steps of installing an assembled platform structure (1) after backfilling and applying waterproof materials, wherein pile foundation hole sites (15) are reserved in advance for each platform assembly, a matched cover plate is arranged at the impact hole site, the platform assemblies are directly and tightly laid, and the connecting parts among the platform assemblies are effectively connected by adopting a pin shaft or welding mode; Step seven comprises the steps of firstly enabling a drilling machine to enter into place on a rapid turnover steel platform, then sequentially forming holes on holes where all steel casings (5) are located, removing and transferring the assembled platform structure (1) after drilling and removing the drilling machine, and repeatedly and circularly completing drilling of the residual span.

Description

Rapid turnover steel platform for ultra-long bored pile in tidal flat area and construction process of rapid turnover steel platform Technical Field The invention belongs to the technical field of building construction, and relates to a rapid turnover steel platform for ultra-long bored piles in a beach area and a construction process thereof. Background At present, the prior art also faces a plurality of problems in the aspect of construction of ultra-long bored piles in the tidal flat area of the railway/highway bridge with high environmental protection requirements, tight construction period and long line length. At present, in the prior art, for the construction of a cast-in-situ bored pile in a beach area, a method for hardening concrete in a construction area is generally adopted to improve the stability and bearing capacity of a boring platform, but the concrete hardening area generated by the method needs to be broken after the construction is completed, solid waste is generated, and the beach area environment is polluted. In addition, the site hardening is uneconomical before each pier is constructed, and the equipment can be arranged only by waiting for the concrete to reach the strength after hardening, so that the construction efficiency is lower. In the general construction method, a slurry pipeline is required to be arranged before a single pile is constructed, then the slurry pipeline is required to be rearranged for each pile, so that the construction work efficiency is reduced, and if errors occur during arrangement construction, slurry is easy to overflow during lifting and the environment is polluted. Disclosure of Invention The invention aims to provide a rapid turnover steel platform for ultra-long drilling piles in a beach area, which is used for solving the problems that in the prior art, a concrete hardening mode is adopted to improve the stability and bearing capacity of the drilling platform in the beach area, wastes are generated in the hardening area and then the environment is polluted due to the fact that the hardening area is broken later, and meanwhile, as slurry pipelines are arranged repeatedly for each pile in the situation, the construction efficiency is reduced and errors are easily caused. The utility model provides a be used for ultra-long bored pile quick turnover steel platform in mud flat district, includes steel pile casing, mud circulation system and assembled platform structure, steel pile casing buries in drilling hole site department, mud circulation system includes rigid pipeline system, mud pit and bears assembled platform structure's mud flat ground structure, mud flat ground structure is including arranging rigid pipeline system's slot, backfill sand soil tamp after arranging rigid pipeline system and flatten the real part of ramming and lay the geotechnique layer above the real part of ramming, each steel pile casing is connected to rigid pipeline system with the mud pit, steel pile casing with rigid pipeline system connects fixedly, assembled platform structure lays mud flat ground structure with rigid pipeline system is above, assembled platform structure is fixed to steel pile casing. Preferably, the steel pile casing is fixedly connected with the rigid pipeline system, the rigid pipeline system comprises a plurality of steel sleeves and steel guide pipes, the steel sleeves are fixedly sleeved outside the steel pile casing, the end parts of the steel guide pipes are fixedly welded with the steel sleeves and can extend into the steel pile casing, a notch is formed in the steel pile casing at a position corresponding to a pipe orifice of the steel guide pipe, angle steel is welded after two sides of the notch are outwards expanded, and a gap between the steel pile casing and the rigid pipeline system is plugged by a water stop bar to form a parallel slurry channel. Preferably, the assembled platform structure comprises a platform assembly, wherein the platform assembly is rectangular and is provided with at least two pile foundation hole sites, adjacent platform assemblies in the same assembled platform structure are tightly paved and fixedly connected, pile foundation hole sites corresponding to the steel casing one by one are arranged on the assembled platform structure, and hole site cover plates are paved on the pile foundation hole sites which are not drilled. Preferably, the platform assembly comprises a three-hole platform assembly and a two-hole platform assembly, wherein the three-hole platform assembly is provided with three pile foundation hole sites which are uniformly distributed along the length direction of the three-hole platform assembly, and the two-hole platform assembly is provided with two pile foundation hole sites which are uniformly distributed along the length direction of the two-hole platform assembly. Preferably, the arrangement shape of the steel casing is rectangular, the fabricated platform structure is formed by arranging a