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Modular cast-in-place construction method for large-diameter root foundation

A technology of foundation modules and construction methods, which is applied in the direction of foundation structure engineering, construction, sheet pile walls, etc., can solve the problems of difficult transportation of prefabricated parts in the construction site, difficulty in sinking caissons, and large hoisting equipment, and achieve light weight and shortened construction period , Improve the effect of construction efficiency

Inactive Publication Date: 2012-02-22
ANHUI TRANSPORTATION HLDG GRP CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] Most of the existing caissons and immersed tube foundations are constructed by prefabricated cast-in-place sinking or relying on self-weight sinking. This method has the problems of difficulty in transporting prefabricated parts at the construction site, large hoisting equipment, and difficulty in sinking the caisson. Low construction efficiency and long construction period

Method used

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  • Modular cast-in-place construction method for large-diameter root foundation
  • Modular cast-in-place construction method for large-diameter root foundation
  • Modular cast-in-place construction method for large-diameter root foundation

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Embodiment Construction

[0028] Concrete construction among the present embodiment is carried out as follows:

[0029] 1. At the position where the root foundation is set, use a drilling rig to construct a pile hole; the suitable foundation outer diameter is generally 3-7m;

[0030] 2. If figure 1 with figure 2 As shown, the FRP composite structure of each segment is made in sections. The FRP composite structure is to set the root key steel sleeve 2 radially and radially in the double-layer steel cage 1, and wrap the outer steel wire around the outer periphery of the double-layer steel cage 1. Mesh, the distance between the outer steel wire mesh and the outer steel bars of the double-layer steel cage is maintained with a concrete protective layer, and then the FRP layer 3 is formed in the form of winding on the outer periphery of the outer steel wire mesh; the length of each segment of FRP is 6-10m.

[0031] 3. image 3 As shown, in the pile-forming hole, the first section of FRP composite struct...

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Abstract

The invention discloses a modular cast-in-place construction method for a large-diameter root foundation, which is characterized by comprises the following steps of: firstly, constructing a pile formation hole at the position of a set root foundation by a drilling machine; sectionally manufacturing each section of FRP (Fiber Reinforce Plastic) combination structure, sequentially placing each section of FRP combination structure into the pile formation hole, welding adjacent sections of FRP combination structures by reinforcing bars or connecting adjacent sections of FRP combination structures by direct screw thread sleeves, winding FRP on the peripheries of the junctions to form a hollow pile cylinder, forming a pile cylinder concrete inner wall in the hollow pile cylinder, and pouring pile cylinder bottom plate concrete to carry out bottom sealing so as to form a ring-shaped cylinder with the sealed bottom; ejecting a root key into each root key steel bushing; and finally pouring lining concrete on the periphery of the pile cylinder concrete inner wall and pouring a top cover after the strength of the lining concrete is met so as to form a foundation platform. Due to the adoption of the modular cast-in-place construction method for the large-diameter root foundation, the construction can be effectively and conveniently carried out and the construction efficiency is improved.

Description

technical field [0001] The invention relates to a cast-in-place construction method for root foundations in civil engineering, bridge house construction and hydraulic structures. Background technique [0002] Most of the existing caissons and immersed tube foundations are constructed by prefabricated cast-in-place sinking or relying on self-weight sinking. This method has the problems of difficulty in transporting prefabricated parts at the construction site, large hoisting equipment, and difficulty in sinking the caisson. The construction efficiency is low and the construction period is long. Contents of the invention [0003] The present invention provides a root foundation modular cast-in-place construction method in order to avoid the disadvantages of the above-mentioned prior art, so as to facilitate construction and improve construction efficiency. [0004] The present invention adopts following technical scheme for solving technical problems: [0005] The feature ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/02E02D27/12E02D5/38
Inventor 殷永高房涛孙敦华徐宏光杨善红章征车承志朱福春张立奎张继凤张雪莲
Owner ANHUI TRANSPORTATION HLDG GRP CO LTD
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