Seismic Reinforcement Method of Loess Cave Dwelling by Replacement of Covering Soil in Shear Area of ​​Vault

A technology for replacing soil and vaults, applied in construction, building maintenance, building types, etc., can solve the problems of loess cave dwelling safety hazards, loess cave dwelling instability, loss of stability, etc., achieve high construction efficiency, improve construction quality, excavate In addition to the effect of convenience

Active Publication Date: 2021-10-01
SHAANXI ACAD OF ARCHITECTONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the "X"-shaped shear failure occurs on the arch ring vault, the loess cave dwelling will have great potential safety hazards, and even lose stability and collapse. Instability and collapse of loess cave dwellings caused by X”-shaped shear failure

Method used

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  • Seismic Reinforcement Method of Loess Cave Dwelling by Replacement of Covering Soil in Shear Area of ​​Vault
  • Seismic Reinforcement Method of Loess Cave Dwelling by Replacement of Covering Soil in Shear Area of ​​Vault
  • Seismic Reinforcement Method of Loess Cave Dwelling by Replacement of Covering Soil in Shear Area of ​​Vault

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] like figure 2 As shown in a loess cave dwelling seismic reinforcement method that replaces the covering soil in the sheared area of ​​the vault, there are two cracks 2 in the covering soil layer above the arch ring of the reinforced loess cave dwelling 1, and the two cracks 2 are arranged crosswise. Arranged in an X shape, the overlapped gap between the two cracks 2 is an intersecting seam 13, the upper area of ​​the intersecting seam 13 is a cavity 3, and the lower area of ​​the intersecting seam 13 is a roof fall area 4, see figure 1 ;

[0077] When the loess cave dwelling 1 is reinforced, the following steps are included:

[0078] Step 1. Excavation of the overburden in the shear area of ​​the vault: Excavate the overburden in the shear area of ​​the vault in the overburden layer to obtain the shear replacement cavity 5 of the vault. For details, see image 3 ;

[0079] The two cracks 2 are located in the shear area of ​​the vault, and the shear replacement cavit...

Embodiment 2

[0130] like Figure 8 As shown, in this embodiment, the difference from Embodiment 1 is that in the step 2, a steel skeleton is arranged in the shear replacement layer 6 of the vault, and the steel skeleton is arranged horizontally and along the depth direction of the loess cave 1. Layout; the steel skeleton is a cube skeleton and it is fastened and fixed in the shear replacement layer 6 of the vault;

[0131] The steel bar skeleton includes four horizontally arranged stressed steel bars 12 and multiple vertically arranged tie bars 14, the four stressed reinforced bars 12 are arranged along the depth direction of the loess cave 1, and the four roads The length of the stressed steel bars 12 is the same as the depth of the loess cave 1, and they are respectively arranged on the top of the left and right sides and the lower parts of the left and right sides of the vault shear replacement cavity 5; the multiple tie bars 14 are all rectangular steel bars And they are all set on th...

Embodiment 3

[0141] like Figure 9 As shown, in this embodiment, the difference from Embodiment 1 is that in step 1, a door-shaped tie net 7 is fixed in the vault shear replacement chamber 5, and the door-shaped tie net 7 is fixed by a It consists of a horizontal tension net on the top surface of the vault shear displacement chamber 5 and two vertical tension nets respectively fixed on the left and right side walls of the vault shear displacement chamber 5;

[0142] After the replacement soil is filled in step 2, the glyph-shaped tie net 7 is fixed between the vault shear replacement layer 6 and the covering soil layer on the side of the vault shear replacement cavity 5 .

[0143] In this embodiment, the horizontal tie net and the two vertical tie nets in the door-shaped tie net 7 are tightly connected as one, and the unfolded sheet of the door-shaped tie net 7 is one Integral rectangular mesh. The upper parts of the two vertical tie nets are respectively connected to the left and right ...

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Abstract

The invention discloses an anti-seismic reinforcement method for a loess cave dwelling by replacing the covering soil in the shear area of ​​the vault, comprising steps: 1. Excavating the covering soil in the shear area of ​​the vault: excavating the covering soil in the shear area of ​​the vault in the covering soil layer to obtain Vault shear replacement cavity; 2. Replacement soil filling: Use replacement soil to fill the vault shear replacement cavity. The invention is reasonable in design, convenient in construction and good in use effect. It excavates the covering soil in the X-shaped shear damage area to form a shear replacement cavity for the vault, and then adopts the replacement soil processed in proportion to the vault roof by loess, water glass and water. The shear replacement cavity is filled and tamped to achieve the purpose of fully and effectively replacing the unstable overburden in the X-shaped shear failure area. The constructed replacement soil filling layer has high strength and its connection with the surrounding overburden is stable and reliable. Effectively improve the overall strength of the X-shaped shear damage area, and transfer the damage area to non-critical parts, thereby improving the seismic effect of loess cave dwellings and greatly reducing earthquake damage losses.

Description

technical field [0001] The invention relates to a cave dwelling reinforcement method, in particular to a loess cave dwelling seismic reinforcement method that replaces the covering soil in the shear area of ​​the vault. Background technique [0002] Cave dwellings are an ancient living form of residents on the Loess Plateau in Northwest China. The history of this "cave-dwelling" dwelling can be traced back to more than 4,000 years ago. Cave dwellings generally have cliff-like cave dwellings, sunken cave dwellings, and free-standing cave dwellings. Among them, mountain kilns are more widely used, and mountain kilns refer to loess cave dwellings dug against mountains. At present, most of the cave dwellings used are arched cave dwellings, and the arched cave dwellings include an arch ring and two left and right side walls respectively supported under the two arch feet of the arch ring. In the actual use process, the arch ring of the loess cave dwelling is prone to roof collaps...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G23/02E04H9/02
CPCE04G23/02E04G23/0233E04H9/027
Inventor 张风亮朱武卫田鹏刚边兆伟员作义史继创毛冬旭刘岁强成浩陈力莹孟南希杨颖李妍王昕岚
Owner SHAANXI ACAD OF ARCHITECTONICS
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