Foundation pile group construction method
A construction method and technology for foundation piles, which are applied in foundation structure engineering, excavation, sheet pile walls, etc., can solve the problems of insufficient stability of foundation piles and insufficient stability of buildings, so as to improve the strength and integrity of the structure and improve the stability. And the effect of firmness and high structural strength
Pending Publication Date: 2021-08-27
浙江晨原建设工程有限公司
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Problems solved by technology
[0004] The above-mentioned related technical solutions have the following defects: in the above-mentioned construction method, when the foundation piles are buried, the stability of the foundation piles is not strong enough, which may lead to insufficient stability of the building built on the top of the foundation piles
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[0039] The following is attached Figure 1-7 The application is described in further detail.
[0040] see figure 1 , a foundation pile group, including formed foundation piles evenly distributed on the construction ground.
[0041] The formed foundation pile includes a foundation pile 1 in the middle, a steel cage 2 arranged around the side of the foundation pile 1 and a concrete layer covering the steel cage 2 and the foundation pile 1 .
[0042] see figure 1 and figure 2 , the construction site is vertically provided with a countersunk-shaped hole, the upper part of the countersunk-shaped hole is a protective pit 3, and the lower part is a foundation pit 4, and the formed foundation pile is directly formed in the foundation pit 4.
[0043] see figure 2 and Figure 4 , the steel cage 2 includes two inner and outer circles, each circle of steel cage 2 includes a plurality of main bars 5 and stirrups 6, the main bars 5 are vertical steel bars, and the plurality of main ...
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Abstract
The invention relates to a foundation pile group construction method. The method comprises the following steps: firstly, a protection pit with the diameter of 1 meter and the depth of 1.5 meters is dug in a building ground, and then a protection sleeve with the outer ring diameter of 1 meter and the height of 1.8 meters is vertically and coaxially inserted into the protection pit; secondly, a foundation pit with the diameter of 0.9 meter and the depth of 15 meters is coaxially drilled in the bottom of the protection pit through drilling equipment, a tamper penetrates into the foundation pit to tamp the bottom of the foundation pit, and the depth of the foundation pit is tamped to be 20 meters; thirdly, a steel cage is tightly attached to the side wall of the foundation pit and placed into the foundation pit, and then the foundation pile is vertically inserted into the steel cage; fourthly, concrete is poured into the foundation pit, and when the concrete is close to the top layer and the protection pit, concrete pouring is stopped; and fifthly, a protection sleeve is vertically and slowly taken out and prepared for next-time use. The method has the advantages of increasing the firmness degree, stability and the like of the formed foundation pile and the like.
Description
technical field [0001] The present application relates to the technical field of building construction, in particular to a foundation pile group construction method. Background technique [0002] At present, with the development of the country's economy, the construction of airports, high-speed railways and urban subways is developing rapidly, and the number of large-scale rail transit hubs is gradually increasing. Along with this, it also poses new challenges to the development of foundation and underground space engineering technology, and the emergence of multi-channel Parallel pits. In the second-phase boarding gallery project of Shanghai Pudong International Airport, there were 3-channel parallel foundation pits, and the overall excavation method was adopted for implementation. In the construction of the Central South Corridor of Beijing New Airport, the problem of multi-channel parallel foundation pits was also encountered, and the situation was more complicated than ...
Claims
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Login to View More IPC IPC(8): E02D5/38E02D17/08E02D15/08
CPCE02D5/38E02D5/385E02D17/08E02D15/08
Inventor 李菊连贾婧妍李轶林国
Owner 浙江晨原建设工程有限公司