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A construction method for strengthening the stiffness of the sidewall of the foundation pit with the support of the composite soil nailing wall

A technology of composite soil nailing and construction methods, which can be applied in basic structure engineering, excavation, construction, etc., can solve problems such as limited contact surface, cumbersome construction, and limited in-situ soil reinforcement, so as to improve stiffness, ensure safety and control deformation Effect

Active Publication Date: 2020-04-17
杨昌亚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure currently has two disadvantages: first, when the micropile arrangement is dense, the cost is high; The role of the prestressed anchor is limited. The prestressed anchor rod acts on the soil on the side wall of the foundation pit through the waist beam, and the contact surface between the waist beam and the wall is very limited. , leading to support problems
In order to solve these problems, the current traditional method is to strengthen by encrypting micro piles, but this greatly increases the cost

Method used

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  • A construction method for strengthening the stiffness of the sidewall of the foundation pit with the support of the composite soil nailing wall
  • A construction method for strengthening the stiffness of the sidewall of the foundation pit with the support of the composite soil nailing wall
  • A construction method for strengthening the stiffness of the sidewall of the foundation pit with the support of the composite soil nailing wall

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Embodiment one, a kind of construction method of composite soil nailing wall support strengthening foundation pit side wall rigidity, see figure 1 ,

[0037] 1 is the sprayed anchor surface layer of the hanging net, 2 is the soil nail, 3 is the prestressed anchor rod, 4 is the waist beam, and 5 is materials such as steel pipe, channel steel, wood square, and bamboo. The specific implementation method is as follows: after the reinforcement mesh 1 is hung on the side wall of the foundation pit, 5 steel pipes, channel steel, wood squares, bamboo and other materials are evenly arranged at the position of the waist beam 4, pressed on the reinforcement mesh 1, and then the waist beam is tied Reinforcement, so that 5 is between the waist beam 4 and the hanging net 1. When the waist beam is molded and poured, and reaches the design strength, the prestressed anchor rod 3 is stretched, and the impact of the waist beam on the soil is enlarged through 5. Force surface, so as to gi...

Embodiment 2

[0038] Embodiment two, a kind of construction method of composite soil nailing wall support strengthening foundation pit side wall rigidity, see figure 2 ,

[0039] 1 is the spray anchor surface layer of the hanging net, 2 is the soil nail, 3 is the prestressed anchor rod, 4 is the waist beam, 5 is steel pipe, channel steel, wood square, bamboo and other materials, and 6 is the mixing pile. The specific implementation method is as follows: after the reinforcement mesh 1 is hung on the side wall of the foundation pit, 5 steel pipes, channel steel, wood squares, bamboo and other materials are evenly arranged at the position of the waist beam 4, pressed on the reinforcement mesh 1, and then the waist beam is tied Reinforcement, so that 5 is between the waist beam 4 and the hanging net 1. When the waist beam is molded and poured, and reaches the design strength, the prestressed anchor rod 3 is stretched, and the impact of the waist beam on the soil is enlarged through 5. Force s...

Embodiment 3

[0040] Embodiment three, a kind of construction method of composite soil nailing wall support strengthening foundation pit side wall rigidity, see image 3 ,

[0041] 1 is the sprayed anchor surface layer of the hanging net, 2 is the soil nail, 3 is the prestressed anchor rod, 4 is the waist beam, 5 is materials such as steel pipe, channel steel, wood square, bamboo, and 7 is a micro-pile. The specific implementation method is as follows: after the reinforcement mesh 1 is hung on the side wall of the foundation pit, 5 steel pipes, channel steel, wood squares, bamboo and other materials are evenly arranged at the position of the waist beam 4, pressed on the reinforcement mesh 1, and then the waist beam is tied Reinforcement, so that 5 is between the waist beam 4 and the hanging net 1. When the waist beam is molded and poured, and reaches the design strength, the prestressed anchor rod 3 is stretched, and the impact of the waist beam on the soil is enlarged through 5. Force sur...

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Abstract

The invention discloses a construction method for strengthening the stiffness of the side wall of a foundation pit by using a composite soil nailing wall support. Materials having a certain stiffnessand a certain contact surfaces but not limited to steel tubes, groove steel, wood beams and phyllostachys pubescens are used and uniformly arranged at proper intervals at the position of a prestressing-force anchor rod waist beam of the side wall of the composite soil nailing wall so that the rigidity stress surface is increased and the deformation of the side wall of the flexible support foundation pit is limited. The invention is temporarily named as a composite soil nailing wall reinforced type waist plate beam system.

Description

[technical field] [0001] The invention relates to a construction method for strengthening the rigidity of the side wall of a foundation pit with a composite soil nail wall support, in particular to a prestressed anchor on the side wall of a composite soil nail wall using but not limited to steel pipes, channel steel, wood squares, and bamboo It is a construction method that uniformly distributes and increases the rigid force-bearing surface at the pole waist beam at an appropriate distance to limit the deformation of the side wall of the flexible support foundation pit. Temporarily named composite soil nail wall reinforced lumbar beam system. [Background technique] [0002] Composite soil nail wall technology is to combine soil nail wall with deep mixing piles, rotary grouting piles, tree root piles, steel pipe soil nails and prestressed anchor rods, and form a composite foundation pit support technology through various combinations. Composite soil nail wall support has the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04
Inventor 杨昌亚
Owner 杨昌亚