Construction method for crossing construction waste rotary excavating pile

A construction method and technology of construction waste, applied in construction, sheet pile walls, foundation structure engineering, etc., can solve the difficulty of installing steel casings for super-thick construction waste backfill layers, poor construction waste backfill layer effects, and inability to excavate construction waste Clear and other problems to achieve the effect of solving the collapsed hole situation, improving the quality of pile forming, and shortening the construction period

Inactive Publication Date: 2021-04-30
THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU
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AI Technical Summary

Problems solved by technology

[0003] At present, the effect of the backfill layer of construction waste is poor, mainly manifested in: it has been backfilled in the past 5 years, the density of the backfill is low, it is difficult for the rotary drill to drill, and a large number of collapsed holes appear in the backfill construction waste layer , it is difficult to install steel casings in the super-thick construction waste backfill layer, and it is adjacent to main roads and scenic spots. It is impossible to excavate and remove the construction waste before the construction of the support piles

Method used

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  • Construction method for crossing construction waste rotary excavating pile

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Embodiment

[0027] A construction method for rotary excavation piles passing through construction waste, referring to figure 1 , the construction method comprises the following steps:

[0028] S1. Pile position setting out: locate and measure the pile position according to the construction drawing, level the surrounding site, check the pile number and the surrounding environment of the site location, and mark the pile position with short steel bars; the measurement work should be reviewed and recorded to ensure accuracy ;

[0029] S2. Consolidation grouting treatment: Arrange consolidation grouting points within 3m around the support piles, the distance between the consolidation grouting points and the support piles is 600×600mm, and the high-pressure rotary grouting pile machine is in place and leveled , penetrate the injection pipe to the bottom of the construction waste, use 42.5 Portland cement, cement slurry with a water-cement ratio of 1.0, double-pipe method for side grouting, sid...

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Abstract

The invention provides a construction method of a crossing construction waste rotary excavating pile. The construction method includes the steps of S1, paying off at a pile position; S2, carrying out consolidation grouting treatment; S3, carrying out supervision and acceptance; S4, placing a rotary drilling rig; S5, carrying out leveling and drilling; S6, crossing a construction waste layer; S7, controlling rock entering depth; S8, cleaning a hole and measuring the depth of the hole; S9, carrying out supervision and acceptance; and S10, carrying out concrete pouring. According to the construction method of the crossing construction waste rotary excavating pile, the construction quality of penetrating through the construction waste rotary excavating pile can be improved, the working efficiency is improved, and the construction period is shortened.

Description

technical field [0001] The invention relates to the technical field of pile digging, in particular to a construction method of a rotary digging pile passing through construction waste. Background technique [0002] The construction waste is mainly gravel and broken bricks, and the lower part of the backfill construction waste is clay and weathered limestone. The construction waste dumping point is mainly located at the foot of the hillside, surrounded by scenic spots and main roads in the city. A cultural and tourism complex is planned on the hillside. The length of the foundation pit support piles is not less than 3m into the rock, and the piles pass through the former loose buildings on the upper layer. The garbage backfill layer is as thick as 6m. [0003] At present, the effect of the construction waste backfill layer is poor, mainly manifested in: it has been backfilled in the past 5 years, the density of the backfill is low, it is difficult for the rotary drill to dri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12E02D15/04E02D5/36E02D15/08
CPCE02D3/12E02D15/04E02D5/36E02D15/08E02D2250/0023
Inventor 郭号号严宝峰全有维陈红彬
Owner THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU
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