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Bearing platform foundation backfill structure and construction method thereof

A construction method and basic technology, which is applied in the direction of basic structure engineering, filling, construction, etc., can solve the problems of high construction cost, prominent concrete cracks, and high compaction requirements, so as to improve backfill efficiency, facilitate mechanical lifting, and reduce manpower. The effect of work

Pending Publication Date: 2019-11-26
NO 2 CONSTR GRP CO LTD OF SHANGHAI CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One is the plain concrete backfill technology. Although it has the advantages of short construction period and good backfill effect, the construction cost is high and the problem of large-volume concrete cracks is prominent
[0005] The second is earthwork layered compaction technology. Although it has the advantage of low construction cost, it requires high compaction, complicated procedures and long construction period.
[0006] It can be seen that the existing backfill technology for cap foundation construction is either high in cost and short in cycle, or low in cost and long in cycle

Method used

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  • Bearing platform foundation backfill structure and construction method thereof

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Effect test

Embodiment 1

[0036] Combine below figure 1 The structural composition of the cap foundation backfill structure of the present invention is described.

[0037] A cap foundation backfill structure, which includes: a pile foundation structure, a backfill layer and a cap foundation bottom plate 2, the pile foundation structure goes deep into the soil; the backfill layer includes a concrete wrapping layer and a structural member 3 arranged side by side, and the A certain gap is formed, the concrete wrapping layer is located above the pile foundation structure, the concrete wrapping layer is formed by pouring concrete with the backfill material 1, the concrete wrapping layer is located above the pile foundation structure; the cap foundation bottom plate 2 is located above the concrete wrapping layer, the cap foundation bottom plate 2 A fixed connection is formed between the structural members 3 .

[0038] In this embodiment, preferably, the backfill material 1 is several high-density degradable...

Embodiment 2

[0043] Please continue to refer figure 1 , the present invention also provides a construction method for the backfill structure of the cap foundation, the construction method comprising the following steps:

[0044] Step 1. Preparation of backfill material 1: Put the graded gravel into several high-density degradable woven bags with a shovel, and the volume of a woven bag filled with graded gravel is 1 cubic meter;

[0045] Step 2. Backfill material 1 enters the site: lift the woven bag filled with graded gravel with an excavator, and transport it horizontally to the coverage of the lifting equipment;

[0046] Step 3: Backfill material 1 is hoisted in place: After the reinforcement of the cap is bound, use a truck crane or a tower crane to hoist the woven bag filled with graded gravel into the gap between the caps, stack it in a single layer, and avoid the intrusion of the backfill material 1 For the range of structural components, the minimum distance between the backfill ma...

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Abstract

The invention relates to a bearing platform foundation backfill structure and a construction method thereof, and belongs to the technical field of building construction. The purposes are that a reasonable and effective backfill material and mode are adopted so that backfill work can be modularized and mechanized, and the better backfill effect is achieved through the simpler technological process.According to the construction method, a high-density degradable woven bag is adopted to be filled with graded broken stone to form the backfill material for backfilling, after the graded broken stoneis bagged, a tower crane or an auto crane can be adopted for hoisting in place, the procedures such as brick membrane laying and layering backfill tamping are not needed, and thus the backfill work of bearing platform foundation construction is simplified greatly.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a cap foundation backfill structure and a construction method. Background technique [0002] According to the requirements of JGJ94-2008 "Technical Specifications for Building Pile Foundations": the gap between the cap and the basement and the side wall of the foundation pit should be filled with plain concrete or mixed fluid cement soil, or lime soil, graded sand and stone, and plain with good compaction. The soil is compacted in layers, and its compaction coefficient is not less than 0.94. [0003] The existing backfilling technology for cap foundation construction mainly includes two kinds, one is plain concrete backfilling technology; the other is earthwork layered compaction technology. However, these two common techniques have drawbacks: [0004] The first is plain concrete backfill technology. Although it has the advantages of short construction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/14E02D17/18E02D15/02
CPCE02D27/14E02D17/18E02D15/02
Inventor 张晨雨李涛余佳骏罗俊杰
Owner NO 2 CONSTR GRP CO LTD OF SHANGHAI CONSTR GRP
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