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Occlusive pile construction method during encountering with deep layer underground obstacles

A construction method and obstacle technology, applied in excavation, sheet pile walls, foundation structure engineering, etc., can solve the problems of secondary obstacles encountered in the construction method of moving piles, prolong the construction period of key lines, and difficult control of construction quality, etc., to achieve Avoid pile anchorage with insufficient anchorage length, reduce construction workload, and reduce the effect of construction workload

Inactive Publication Date: 2018-08-10
CHINA CONSTR FIRST BUILDING GRP CORP LTD +1
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  • Description
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  • Application Information

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Problems solved by technology

[0006] The technical problems to be solved are: the existing in-situ treatment of obstacles prolongs the construction period of key lines, and the pile-moving construction method has the risk of encountering obstacles twice, the construction workload is large, the moving site is limited, and the construction cost is high. Construction quality is not easy to control

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  • Occlusive pile construction method during encountering with deep layer underground obstacles
  • Occlusive pile construction method during encountering with deep layer underground obstacles

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Embodiment Construction

[0051] The construction method of the occlusal pile of the present invention in case of a deep underground obstacle specifically comprises the following steps:

[0052] Step 1. Site leveling and shallow surface old foundation removal:

[0053] According to the construction design requirements, carry out pre-setting, determine the occlusal pile construction area with shallow old foundations, and then remove the shallow old foundations with a depth of no more than 5m in the area. The specific removal steps are as follows:

[0054] First, excavate the miscellaneous soil in the area with an excavator, and excavate on both sides of the work area to avoid soil subsidence. The slope angle is 60° until the obstacles are completely exposed;

[0055]Then use a pickaxe machine to break shallow obstacles;

[0056] Finally, remove the broken garbage;

[0057] Step 2, guide wall construction: specifically include the following steps:

[0058] A) Pile position measurement: according to th...

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Abstract

The invention relates to the technical field of foundation construction of building construction, and discloses an occlusive pile construction method during encountering with deep layer underground obstacles. The method comprises the following steps that site leveling and surface shallow layer old foundation cleaning are carried out; a guide wall is constructed; occlusive piles are constructed; the occlusive piles are of a continuous row pile structure composed of plain piles and complex piles which are occlusive and arranged at intervals, wherein the plain piles are A-sequence piles, and thecomplex piles are B-sequence piles; a casing oscillator is used for hole forming, in the construction process, when the deep layer underground obstacles appear, finished hole positions are subject tobackfill operation, construction of the next construction sequence hole position is continuously carried out, after the whole row of occlusive piles are constructed, or, after the plain piles on the two sides are finally set, in-position covering position construction is carried out, the deep layer underground obstacles are broken through a rotary digging machine or punching machine, hole formingis carried out again, and construction of a covering position pile is finished. The underground barriers are treated in situ, the key line duration is not affected, construction efficiency is high, accuracy is high, and the construction quality is easily controlled.

Description

technical field [0001] The invention relates to the technical field of foundation construction in building construction, in particular to a construction method for occlusal piles meeting deep underground obstacles. Background technique [0002] The occlusal pile is a relatively common form of foundation pit enclosure in engineering at present, and it is a foundation pit enclosure structure in which piles are interlocked with each other. The piles are arranged in such a way that a vegan concrete pile (i.e. plain pile) and a reinforced concrete pile (i.e. meat pile) are alternately arranged, and there are overlapping concrete parts between the plain pile and the adjacent meat pile, that is, the occlusal parts. [0003] The current construction method is mainly to use a rotary excavator to form a hole, and the rock penetration efficiency is high. When carrying out some urban reconstruction projects, the old underground foundation or old support structure of the original build...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D5/34E02D5/46
Inventor 赵明才来邵帅李涛吴佳晓陈顶郭权吴珺滨
Owner CHINA CONSTR FIRST BUILDING GRP CORP LTD
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