Unlock instant, AI-driven research and patent intelligence for your innovation.

Construction method for deep foundation pit steel sheet pile and anchor rope timbering system

A construction method and anchor cable support technology, applied in infrastructure engineering, excavation, construction, etc., can solve the problems of high construction cost, long construction period, non-recyclable reuse, etc.

Inactive Publication Date: 2012-12-12
CHINA CONSTR SIXTH ENG DIV CORP
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing common support methods must be carried out after the support project is completed before the follow-up work such as earthworks can be carried out, so the construction period is long; and because most support methods such as deep mixing piles and bored piles are concrete structures, the construction turnover The material input is large, and the support system formed is permanent and cannot be recycled and reused, so the construction cost is relatively high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] (1) Drive the steel sheet pile into the soil layer at the design depth by hammering or vibrating piling around the planned deep foundation pit according to the design requirements; (2) After the construction of the steel sheet pile is completed, return 0.15 m adopts fully welded steel crown beams; (3) After the construction of the steel crown beams is completed, the earthwork excavation is carried out layer by layer according to the designed excavation depth. When the excavation reaches the design depth, the anchor cable construction is carried out. The steps are: (a) drill the anchor cable, install the anchor rod body, and grout the anchor cable on the side wall of the deep foundation pit according to the designed length and spacing of the anchor cable; (b) connect the waist beam and the steel sheet pile by welding , if there is a gap between the steel sheet pile and the waist beam, use a wedge-shaped steel pad to pad the gap, and then connect the waist beam, wedge-shap...

Embodiment 2

[0015] (1) Drive the steel sheet pile into the soil layer at the design depth by hammering or vibrating piling around the planned deep foundation pit according to the design requirements; (2) After the construction of the steel sheet pile is completed, return 0.2 m adopts fully welded steel crown beams; (3) After the construction of the steel crown beams is completed, the earthwork excavation is carried out layer by layer according to the designed excavation depth. When the excavation reaches the design depth, the anchor cable construction is carried out. The steps are: (a) drill the anchor cable, install the anchor rod body, and grout the anchor cable on the side wall of the deep foundation pit according to the designed length and spacing of the anchor cable; (b) connect the waist beam and the steel sheet pile by welding , if there is a gap between the steel sheet pile and the waist beam, use a wedge-shaped steel pad to pad the gap, and then connect the waist beam, wedge-shape...

Embodiment 3

[0018] (1) Drive the steel sheet pile into the soil layer at the design depth by hammering or vibrating piling around the planned deep foundation pit according to the design requirements; (2) After the construction of the steel sheet pile is completed, return 0.18 m adopts fully welded steel crown beams; (3) After the construction of the steel crown beams is completed, the earthwork excavation is carried out layer by layer according to the designed excavation depth. When the excavation reaches the design depth, the anchor cable construction is carried out. The steps are: (a) drill the anchor cable, install the anchor rod body, and grout the anchor cable on the side wall of the deep foundation pit according to the designed length and spacing of the anchor cable; (b) connect the waist beam and the steel sheet pile by welding , if there is a gap between the steel sheet pile and the waist beam, use a wedge-shaped steel pad to pad the gap, and then connect the waist beam, wedge-shap...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a construction method for a deep foundation pit steel sheet pile and an anchor rope timbering system, which comprises the following steps of: (1) knocking steel sheet piles around a deep foundation pit reserved to dig into a soil layer with a designed depth; (2) after the steel sheet piles are constructed, welding a steel crown beam below the top of the steel sheet piles by full weld; and (3) after the steel crown beam is constructed, digging an earthwork by layer according to the designed digging depth, and carrying out anchor rope construction when the earthwork is dug to the designed depth. The anchor rope construction comprises the following steps of: (a) according to an anchor rope design length, drilling on the anchor rope at an interval on the side wall of the deep foundation pit, installing an anchor rod body, and carrying out grouting construction; (b) welding a waist beam and the steel sheet piles, firmly padding a gap with a wedge-shaped steel cushion if the gap is arranged between the steel sheet piles and the waist beam, and tightly connecting the waist beam, the wedge-shaped steel cushion and the steel sheet piles; and (c) when the intensity of the anchor rod body is more than 15MPa, tensioning the anchor rod body, and locking the anchor rope. With the method, the days for construction are effectively shortened.

Description

technical field [0001] The invention relates to a construction method for deep foundation pit support, in particular to a construction method for a deep foundation pit steel sheet pile plus anchor cable support system. Background technique [0002] With the rapid development of urban construction, a large number of foundation pit projects have appeared. Foundation pit engineering has the following characteristics: with the emergence of high-rise buildings, the depth of foundation pits is getting deeper and deeper; The pipeline has high requirements on the deformation of the foundation pit; the construction period of the deep foundation pit is long, the site is narrow, and the construction of the foundation pit is difficult. Common types of deep foundation pit support structures include: deep mixing pile support, row pile support, underground diaphragm wall support, soil nail wall support, bored pile plus soil layer anchor support, etc. The existing common support methods m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04
Inventor 赵小柱刘益强
Owner CHINA CONSTR SIXTH ENG DIV CORP