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Pile foundation lining material and construction method of prefabricating prestressed pipe pile using pile foundation lining material

A technology of prestressed pipe piles and construction methods, which is applied in the direction of foundation structure engineering, sheet pile walls, buildings, etc., to achieve the effects of reducing production costs, solving environmental pollution, and having obvious environmental protection effects

Inactive Publication Date: 2018-04-27
中冶沈勘工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there is no design and construction of using auger drilling to pump iron tailings mortar and then press into prestressed pipe piles

Method used

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  • Pile foundation lining material and construction method of prefabricating prestressed pipe pile using pile foundation lining material
  • Pile foundation lining material and construction method of prefabricating prestressed pipe pile using pile foundation lining material
  • Pile foundation lining material and construction method of prefabricating prestressed pipe pile using pile foundation lining material

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Experimental program
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Effect test

Embodiment 1

[0086] A pile foundation lining material, comprising components and their weight proportions, iron tailings: cement: fly ash: water = 4:1:0.15:1.2.

[0087] The prefabricated prestressed pipe pile construction method using the pile foundation lining material comprises the following steps:

[0088] Step 1, pile hole construction:

[0089] Use an auger drill to drill pile holes at the corresponding positions. The diameter D and depth of the pile holes are determined according to the design requirements, and the depth of the bottom of the hole reaches the design bearing layer at the pile end;

[0090] Step 2, prepare pile foundation lining material:

[0091] According to the proportion, take respectively, iron tailings: cement: fly ash: water = 4: 1: 0.15: 1.2; after mixing, stir to form composite iron tailings mortar, which is used as pile foundation lining material, wherein iron tailings is Iron tailings that have passed the radiation inspection, the iron tailings are fine ta...

Embodiment 2

[0097] A pile foundation lining material, comprising components and their weight proportions, iron tailings: cement: fly ash: water: retarder = 4: 1.2: 0.15: 1.2: 0.002.

[0098] The prefabricated prestressed pipe pile construction method using the pile foundation lining material comprises the following steps:

[0099] Step 1, pile hole construction:

[0100] Use an auger drill to drill pile holes at the corresponding positions. The diameter D and depth of the pile holes are determined according to the design requirements, and the depth of the bottom of the hole reaches the design bearing layer at the pile end;

[0101] Step 2, prepare pile foundation lining material:

[0102] According to the ratio, take them separately, iron tailings: cement: fly ash: water: retarder, early strength agent or antifreeze = 4: 1.2: 0.15: 1.2: 0.002; after mixing, stir to form a composite iron tailings mortar , as the pile foundation lining material, wherein the iron tailings are iron tailings...

Embodiment 3

[0108] A pile foundation lining material, including components and their weight ratios, iron tailings: cement: fly ash: water: early strength agent = 5:1:0.15:1.4:0.015.

[0109] The prefabricated prestressed pipe pile construction method using the pile foundation lining material comprises the following steps:

[0110] Step 1, pile hole construction:

[0111] Use an auger drill to drill pile holes at the corresponding positions. The diameter D and depth of the pile holes are determined according to the design requirements, and the depth of the bottom of the hole reaches the design bearing layer at the pile end;

[0112] Step 2, prepare pile foundation lining material:

[0113] According to the proportion, take them separately, iron tailing sand: cement: fly ash: water: early strength agent = 5: 1: 0.15: 1.4: 0.015; after mixing, stir to form a composite iron tailing sand mortar, which is used as a pile foundation lining material. Wherein, the iron tailings are iron tailings ...

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Abstract

Provided are a pile foundation lining material and a construction method of prefabricating a prestressed pipe pile using the pile foundation lining material. The pile foundation lining material comprises, by weight, 4-5% of iron tailings, 1-1.2% of cement, 0.15% of fly ash, and 1.2-1.4% of water. The construction method includes the following steps that after drilling, according to the proportion,raw materials are taken and mixed, the pile foundation lining material is obtained and injected into a jackrod of a drilling machine; perfusion is performed to reach a perfusion level, a prefabricated prestressed pipe pile is pressed to a design depth, and simultaneously the pile foundation lining material is compacted, so that the pile foundation lining material is tightly combined with the prestressed pipe pile; the liquid level of the pile foundation lining material is upraised to the top of the pile by 0.5-1.0 m; and the pile foundation lining material is maintained to a design strength to form a solidified body, and the construction process of prefabrication of the prestressed pipe pile using the pile foundation lining material is completed. The pile foundation lining material is environmentally friendly, pile foundation concrete is saved, and the construction method of prefabricating the prestressed pipe pile using the pile foundation lining material solves the problems of the bearing capacity of the pile foundation, the load transmission between the pile and the ground, the combination of the pile and an upper structure and so on; and at the same time, the production cost is greatly reduced, the production efficiency is increased, and the application range is wide.

Description

Technical field: [0001] The invention belongs to the technical field of industrial waste residue utilization and building foundations, and in particular relates to a pile foundation lining material and a construction method for prefabricated prestressed pipe piles using the pile foundation lining material. Background technique: [0002] The existing prestressed pipe pile construction technology generally adopts two methods, the driving method or the static pressure method. For the hard stratum driving method or the static pressure method, both methods have the difficulty of penetrating the hard stratum and making the pile point be located on a suitable pile end bearing layer; and because in the construction of the existing prestressed pipe pile, In order to meet the requirements of penetration into the ground during pile construction, the concrete of the pile body and the reinforcement of the pile are specially designed to strengthen, which causes waste of materials to a cer...

Claims

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Application Information

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IPC IPC(8): E02D5/52E02D5/50E02D5/48E02D5/58C04B28/02C04B111/56
CPCC04B28/02C04B2111/00017C04B2111/56C04B2201/50E02D5/48E02D5/523E02D5/58E02D2250/003E02D2300/002C04B18/08C04B18/12
Inventor 徐立军侯彤岩李建军张国杰刘绍文张德志孙璐
Owner 中冶沈勘工程技术有限公司
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