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Prefabricated and cast-in-place combined anchorage foundation enclosure structure and construction method

An enclosure structure and cast-in-place technology, which is applied in basic structure engineering, excavation, construction, etc., can solve problems such as difficult to achieve equal-strength connections, complex load environment, and difficult to apply, so as to avoid joints from being weak and have obvious social benefits , The effect of facilitating on-site construction

Pending Publication Date: 2022-07-29
广西欣港交通投资有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent has the advantages of high efficiency, short cycle time, material saving, and low engineering cost. However, for the ground connection wall of the anchorage enclosure structure with large excavation depth, the external load environment is complicated during the construction process, and the vertical joint is connected by tenon joint. , it is difficult to achieve equal strong connection, the connection may become a weak point, there is a big security risk, it is difficult to apply

Method used

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  • Prefabricated and cast-in-place combined anchorage foundation enclosure structure and construction method
  • Prefabricated and cast-in-place combined anchorage foundation enclosure structure and construction method
  • Prefabricated and cast-in-place combined anchorage foundation enclosure structure and construction method

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Embodiment 1

[0037] A prefabricated, cast-in-place combined anchorage foundation enclosure structure is mainly composed of a prestressed high-strength concrete sheet pile 1 and a cast-in-place underground diaphragm wall 2 .

[0038] The prestressed high-strength concrete sheet pile 1 is prefabricated by steam curing, the concrete strength of the pile body is C125, and the pile body is divided into two parts: a sheet pile convex section 7 and a sheet pile concave section 8.

[0039] The cast-in-situ underground continuous wall 2, the reinforcing bar cage 4 of the convex section and the reinforcing bar cage 6 of the concave section are hoisted and put into the guide groove, and then the concrete 3 is poured, and the concrete strength is C40. I-beams 5 are welded on both ends of the convex section reinforcement cage 4, which are used to strengthen the connection strength of the convex section reinforcement cage 4 and the concave section reinforcement cage 6 after the concrete 3 is poured.

[...

Embodiment 2

[0044] The patent of the present invention also relates to a construction method of a prefabricated, cast-in-place combined anchorage foundation enclosure structure, which includes the following steps:

[0045] Step 1: Carry out the preparatory work before construction, level and harden the site, measure and set out the line.

[0046] Step 2: Carry out the construction of the guide wall of the underground diaphragm wall. The guide wall shall be excavated according to the design axis of the underground diaphragm wall. After excavation, the base shall be laid with a C10 concrete cushion with a thickness of 30mm to 50mm. The formwork can be dismantled after reaching 75% of the design strength. When dismantling the formwork, ensure that the concrete surface and edges and corners are not damaged. After the formwork is dismantled, support should be added inside the guide wall in time.

[0047] Step 3: Carry out the mud preparation work, select the appropriate mud according to the stra...

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Abstract

The invention belongs to the technical field of suspension bridge anchorage construction, and particularly relates to a prefabricated and cast-in-place combined anchorage foundation enclosure structure and a construction method.The prefabricated and cast-in-place combined anchorage foundation enclosure structure comprises prestressed high-strength concrete sheet piles and a cast-in-place underground diaphragm wall; the prestressed high-strength concrete sheet piles are located on the outer side of the cast-in-place underground diaphragm wall. According to the prefabricated and cast-in-place combined anchorage foundation enclosure structure and the construction method, a traditional cast-in-place concrete underground diaphragm wall is partially replaced with the prestressed high-strength concrete sheet piles, the foundation scale is reduced, and materials and the construction cost are saved; by optimizing pile foundation arrangement, the application risk caused by infirm joints is avoided, continuous and synchronous construction is conducted on the anchorage enclosure structure in the guide groove, and the construction period is further shortened.

Description

technical field [0001] The invention belongs to the technical field of anchorage construction of suspension bridges, and particularly relates to a prefabricated and cast-in-place combined anchorage foundation enclosure structure and a construction method. Background technique [0002] current technology: [0003] In recent years, with the rapid development of China's economy, the achievements of civilization have spread rapidly and widely, and the construction of long-span bridges has achieved a revolutionary leap. As an important load-bearing component of long-span suspension bridges, the design and construction of anchorages are very important. In order to speed up the construction progress, more and more projects choose to use the form of pile-wall integrated enclosure. [0004] Invention patent (publication number: CN 112900264 A) discloses a large-diameter occlusal pile gravity anchor foundation enclosure structure and construction method for suspension bridges. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/14E01D11/02E02D17/04E02D5/10E02D5/14E02D5/18E02D15/02
CPCE01D19/14E01D11/02E02D17/04E02D5/105E02D5/14E02D5/187E02D15/02E02D2300/002E02D2300/0029
Inventor 李玉彬贾利强吴明远蒋树勤励彦德张伟王树华覃浩陈鹏付佰勇崔冰过超韩冬冬黄月超王昊陈占力胡力文蒙隆
Owner 广西欣港交通投资有限公司
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