Construction method of foundation pit inclined support pile and auxiliary tool thereof

A construction method and technology of auxiliary tools, applied in basic structure engineering, excavation, construction, etc., can solve problems such as delay in construction period, and achieve the effect of short construction period, shortened total construction period and high construction efficiency

Inactive Publication Date: 2018-10-09
YUNNAN JIANTOU FOUND ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a construction method of diagonally braced piles in a foundation pit and its auxiliary tools, so as to solve the problem that the construction of diagonally braced piles and the excavation of the earthwork below the slope must be carried out after the construction of the engineering piles and the bottom plate in the middle of the foundation pit is completed, resulting in a delay in the construction period. The problem

Method used

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  • Construction method of foundation pit inclined support pile and auxiliary tool thereof
  • Construction method of foundation pit inclined support pile and auxiliary tool thereof
  • Construction method of foundation pit inclined support pile and auxiliary tool thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Figure 1~6 Shown is: a kind of construction method of diagonally braced pile in foundation pit, it is characterized in that comprising the following steps:

[0032] 1) Construction of support piles: construction of support pile 1 pile hole at the pile position, lowering the reinforcement cage and pouring concrete to form support piles, breaking the pile head to expose anchorage section reinforcement 2;

[0033] 2) Pile hole construction of diagonally braced piles: Construct pile holes along the position and direction of the pile holes of diagonally braced piles 7 to form empty boreholes 4 above the foundation pit bottom elevation 3 and bearing holes 5 below the foundation pit bottom elevation 3, bearing holes 5 Inject cement slurry;

[0034] 3) Construction of the diagonally braced pile: fix the auxiliary device 6 so that the supporting surface is on the same line as the empty bore hole 4 and the bearing hole 5, place the diagonally braced pile 7 on the supporting sur...

Embodiment 2

[0039] In order to further optimize the technical solution of Embodiment 1, the diagonally braced pile 7 in this embodiment is a steel pipe pile or a prefabricated pipe pile. Using steel pipe piles or prefabricated pipe piles is more convenient than using pouring concrete in the prior art, the construction period is shorter, and the construction efficiency is higher.

Embodiment 3

[0041] In order to further optimize the technical solution of embodiment 2, in the step 3) described in this embodiment, when the braced pile 7 is composed of multiple sections, the upper end of one section can be temporarily fixed to the reinforcement bar 2 of the anchor section, and the other section can be placed On the auxiliary device 6, after the two sections of the diagonal brace piles 7 are welded firmly, place them in the bearing hole 5. In the actual construction process, the diagonally braced pile 7 can be composed of multiple sections according to the length of the pile hole. The auxiliary device 6 is used to facilitate the welding of the two diagonally braced piles 7. After welding, the auxiliary device 6 is used to lower the pile, which can greatly improve the construction efficiency.

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Abstract

The invention discloses a construction method of a foundation pit inclined support pile and an auxiliary tool thereof, and relates to the technical field of building foundation pit support construction. After foundation pit support piles are constructed, pile heads are broken down, so that rebars of anchorage sections are exposed, holes are drilled in the direction of holes of inclined support piles, the holes are divided by the foundation pit bottom elevation, hollow holes are formed in the upper parts, bearing holes are formed in the lower parts, and cement paste is injected into the bearingholes. Steel pipe piles or prefabricated pipe piles are used as the inclined support piles to be put on the support surface of the auxiliary device, the angle and position of the auxiliary device areadjusted, and the inclined support piles are put downwards until the bottoms of the inclined support piles are put in the bottoms of the bearing holes; the tops of the inclined support piles are anchored into crown beams, concrete is poured, and foundation pits can be dug after the design strength is reached. The operation of the prefabricated pipe piles is simpler and more convenient than that of concrete pouring, so that the construction period is short; the inclined support piles are put downwards by using the auxiliary device, so that the construction efficiency is high; and the inclinedsupport piles and a main body are combined into a whole, the soil pressure of the inclined support piles is transferred to soil at the bottom of the foundation pits, and the inclined support parts andthe middle parts of the foundation pits are dug at the same time, so that the total construction period of the foundation pit engineering is greatly shortened.

Description

technical field [0001] The invention relates to the technical field of building foundation pit support construction, in particular to a construction method of foundation pit diagonally braced piles and an auxiliary tool thereof. Background technique [0002] In the field of construction engineering, foundation pit engineering is becoming more and more common, and there are more and more support forms. The most common support forms are support piles (walls) + anchor rods (cables) + water-stop curtains, support piles ( Wall) + inner support + water-stop curtain two combined support forms. In foundation pit projects that are not suitable for anchor rods (cables), internal support structures are generally used. When the scope of the foundation pit is large and the support distance is long, it is more advantageous to use diagonal support structures instead of horizontal internal supports. In the conventional diagonal brace construction process, the soil in the middle of the foun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 赵贵海李振雄袁淑文高春雷涂伟许利东李文技毕剑峰普树荣陈明彭小毅王鹏
Owner YUNNAN JIANTOU FOUND ENG CO LTD
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