Reclaimed block precast concrete pier foundation and construction method thereof

A technology for concrete and prefabricated piers, applied in the field of concrete, can solve the problems of excavating a large amount of earthwork, large transportation volume, and high foundation cost, and achieve the effects of low recycling cost, low energy consumption for crushing, and quality assurance in use.

Pending Publication Date: 2019-02-19
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a multi-storey building, when the upper shallow foundation soil has a relatively good bearing layer within 2-5m and there is no weak underlying layer, the economical efficiency of the artificial excavated pile foundation is not obvious when compared with the shallow foundation. However, the use of shallow foundations requires excavation of a large amount of earthwork, the transportation volume is large, and the foundation cost is still high

Method used

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  • Reclaimed block precast concrete pier foundation and construction method thereof
  • Reclaimed block precast concrete pier foundation and construction method thereof
  • Reclaimed block precast concrete pier foundation and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1: A prefabricated pier foundation of recycled block concrete without reserved longitudinal reinforcement

[0053] (1) Customize the prefabricated pier foundation mold of recycled block concrete, and assemble and splice the mold.

[0054] (2) Set up scaffolding. On the one hand, it is used to fix the mold, and on the other hand, it is also used as an operation platform in the process of pouring concrete;

[0055] (3) According to the reinforcement cage (3) reinforcement requirements, the longitudinal reinforcement 301 is not less than 8Φ12mm, and the reinforcement ratio is not less than 0.15%, and the stirrup is 302Φ8@250mm, and is bound. The length of the longitudinal reinforcement 301 is 100mm shorter than that of the pier body. And select four longitudinal bars 301 symmetrically on the top of the reinforcement cage, and weld the lifting ring 5 on the corresponding longitudinal bars according to the corresponding design requirements (refer to figure 1 , f...

Embodiment 2

[0062] Example 2: A prefabricated pier foundation of regenerated block concrete with reserved longitudinal reinforcement

[0063] (1) Customize the prefabricated pier foundation mold of recycled block concrete, and assemble and splice the mold.

[0064] (2) Set up scaffolding. Set up scaffolding. On the one hand, it is used to fix the mold, and on the other hand, it is also used as an operation platform in the process of pouring concrete;

[0065] (3) According to the reinforcement requirement of the reinforcement cage 3, the longitudinal reinforcement 301 is not less than 8Φ12mm, and the reinforcement ratio is not less than 0.15%, and the stirrup (302)Φ8@250mm is bound. A part of the longitudinal reinforcement 301 is reserved outside the pier body, which is convenient for the extension of the prefabricated pier foundation of regenerated block concrete on site later. And select four longitudinal bars 301 symmetrically on the top of the reinforcement cage, and weld the lifti...

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Abstract

The invention relates to the technical field of concrete, in particular to a reclaimed block precast concrete pier foundation and a construction method thereof. The reclaimed block precast concrete pier foundation comprises a column pier main body and a reinforcement cage. The reclaimed block precast concrete pier foundation is characterized in that the column pier main body is cylindrical, the reinforcement cage is arranged in a pier column, the column pier main body is prepared in a way that normal concrete and waste concrete blocks are mixed, a plurality of steel wire meshes are verticallyarranged in the column pier main body according to an equal proportion, a pair of lifting rings are symmetrically arranged on the top of the column pier main body, and the reinforcement cage, the steel wire meshes, the lifting rings and the column pier main body are integrally poured. According to the reclaimed block precast concrete pier foundation, the problem that a large amount of energy and working procedures are needed to treat traditional construction waste as aggregates is preferably solved. Compared with a traditional method that the waste concrete blocks are processed into reclaimedaggregates, the reclaimed block precast concrete pier foundation has the advantages that the working procedures of the waste concrete blocks are simple, the crushing energy consumption is reduced, therecycling cost is low, and additionally, a large amount of municipal construction waste can be quickly consumed.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a recycled block concrete prefabricated pier foundation and a construction method thereof. Background technique [0002] With the continuous acceleration of the pace of urbanization in my country and the continuous improvement of the transformation of old urban areas in cities, the annual increase in construction waste is huge, and these abandoned concrete are difficult to degrade. The current treatment method is generally to transport it to the suburbs or villages, and use open-air stacking or landfill for disposal. Only a small part of waste concrete is crushed and used as building foundation cushion or road base. Therefore, carrying out the resource utilization of waste concrete and implementing the sustainable development strategy of resources has important social, economic and environmental benefits. However, compared with traditional recycled aggregate concrete, recycled ...

Claims

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Application Information

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IPC IPC(8): E02D27/01
CPCE02D27/016
Inventor 雷斌杨辅智陆朱汐熊进刚晏育松
Owner NANCHANG UNIV
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