Mobile cast-in-situ bored pile construction platform and method

A technology for drilling cast-in-place piles and construction platforms, which is applied to sheet pile walls, infrastructure engineering, bridge applications, etc., can solve the problems of large coverage, large investment, and many input materials of drilling platforms.

Inactive Publication Date: 2020-10-30
CHONGQING COMM CONSTR GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The structural design of the drilling platform is relatively difficult;
[0005] (2) The investment is relatively large, the drilling platform covers a large area, and a lot of materials are input;
[0006] (3) The process is cumbersome. In order to adapt to the construction of bored piles with plum blossom layout, it is necessary to form holes on the existing drilling platform working surface first, then readjust the layout of the drilling platform working surface, and then carry out the remaining drilling. Construction of cast-in-place piles

Method used

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  • Mobile cast-in-situ bored pile construction platform and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A mobile bored pile construction method is applied to any one of claims 1-4, comprising the following steps:

[0036] S1, preparing concrete and constructing the conduit 13;

[0037] S2. Make the support trestle 2 and the orifice hopper 9 in place through the driving device, and calibrate the detection rope;

[0038] S3, the orifice hopper 9 adopts double hopper form perfusion, the orifice hopper 9 is 3-4 cubic meters, and the auxiliary hopper 8 is 6-8 cubic meters;

[0039] S4. Concrete pouring exceeds the design pile top elevation until the hole overflows with concrete;

[0040] S5, vibrate the concrete within 3m of the pile top to ensure that the pile top concrete is dense;

[0041] S6. After the filling is completed, clean the conduit 13 and the auxiliary hopper 8 and orifice hopper 9;

[0042] S7. After the construction of the pile foundation is completed, the acoustic measurement tube is used for detection; the four acoustic measurement tubes are evenly arrange...

Embodiment 2

[0060] A mobile bored pile construction method is applied to any one of claims 1-4, comprising the following steps:

[0061] S1. Preparing concrete, pre-splicing the conduit 13, and testing the waterproofing of the seat;

[0062] S2. Make the support trestle 2 and the orifice hopper 9 in place through the driving device, and calibrate the detection rope;

[0063] S3. Fill the auxiliary hopper 8 with concrete, open the ball valve of the orifice hopper 9, and at the same time, two concrete trucks inject concrete into the orifice hopper 9 at the maximum flow rate and start pouring the back-sealing concrete until the back-sealing is completed;

[0064] S4. Detect the pouring height of the concrete by the measuring rope, and calculate the embedding depth of the conduit 13;

[0065] S5. When the embedment depth of the conduit 13 reaches 6m, pull out a section of 3m conduit 13, pull out 12 conduits 13 in total during the concrete pouring process, and pull out the remaining conduits ...

Embodiment 3

[0070] For the treatment method of the conduit 13 before perfusion:

[0071] First of all, the main reasons for the water ingress in the conduit 13 are:

[0072] ① The concrete reserves of the bottom cover are insufficient, or although the concrete reserves are sufficient, the distance between the bottom opening of the conduit 13 and the bottom of the hole is too large, and the bottom opening of the conduit 13 cannot be buried after the concrete falls, so that muddy water enters from the bottom opening;

[0073] ② The joint of the conduit 13 is not tight, the rubber pad between the joints is squeezed away by the high-pressure air bag of the conduit 13, or the weld seam is broken, and water flows in from the joint or weld seam;

[0074] ③The conduit 13 is lifted too fast, or the detection is wrong, the bottom opening of the conduit 13 exceeds the original concrete surface, and muddy water pours into the bottom opening.

[0075] The processing methods are:

[0076] ①If it is c...

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Abstract

The invention relates to the technical field of bridge construction, in particular to a mobile cast-in-situ bored pile construction platform. The mobile cast-in-situ bored pile construction platform comprises a main trestle, a branch trestle and a continuous construction channel, wherein the main trestle is a horizontal channel bestriding a length direction of a pile foundation construction area and the main trestle is arranged on one side of the pile foundation construction area; the branch trestle is a horizontal channel bestriding the width direction of the pile foundation construction area; any one end off the main trestle is connected to a transportation channel, transverse slide rails in the length direction of the main trestle are arranged at the bottoms of two ends of the branch trestle, and the branch trestle moves freely on the transverse slide rails through a driving device; and the continuous construction channel is formed by the end, close to the main trestle, of the branch trestle and the main trestle. According to the mobile cast-in-situ bored pile construction platform, an existing cast-in-situ bored pile construction mode is improved, so that the use level of materials is reduced and the steps are simplified. Furthermore, the cost is lowered and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a mobile bored pile construction platform and method. Background technique [0002] With the development of bridge technology, for super-large bridges spanning rivers, lakes and seas, the layout of bored piles for main piers is diversified. When the bored piles of the main pier are arranged in a quincunx pattern, the working surface of the drilling platform needs to reserve drilling hole positions on the working surface of the drilling platform according to the pile position, which makes it difficult to arrange the working surface of the drilling platform, and even needs to be installed first. After part of the bored piles are formed into holes, the layout of the working surface can be readjusted according to the formed hole positions to complete the construction of the rest of the bored piles. Based on the above reasons, for the bored cast-in-situ piles arranged in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/12E02D5/38E02D15/04E01D18/00
CPCE01D18/00E02D5/38E02D5/385E02D15/04E02D27/12
Inventor 黄宁张猛杨帆刁吉周波张治强曾潇敬飞扬邓乾章
Owner CHONGQING COMM CONSTR GRP
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