Method for improving miscellaneous fill and improving backfill quality of composite foundation

A composite foundation and miscellaneous filling technology, which is applied in the fields of filling, soil protection, infrastructure engineering, etc., can solve the problems of complex treatment methods of treatment equipment, and achieve the effects of improving convenience, reducing costs, and improving work efficiency.

Inactive Publication Date: 2020-02-28
金华市中天城建绿色再生资源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The processing equipment and processing methods in the prior art are relatively complicated

Method used

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  • Method for improving miscellaneous fill and improving backfill quality of composite foundation
  • Method for improving miscellaneous fill and improving backfill quality of composite foundation
  • Method for improving miscellaneous fill and improving backfill quality of composite foundation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] It includes the following steps:

[0028] G. Survey the construction site and clean up the construction site;

[0029] H. After clearing the table, the construction area is positioned and set out;

[0030] I. Excavate the foundation to the design depth with miscellaneous filling soil processing machinery;

[0031] J. Manually sort out the miscellaneous filling soil excavated from the original foundation to remove the sundries;

[0032] K. Use the miscellaneous fill processing machine to crush and screen the miscellaneous fill soil from which the sundries have been removed.

[0033]Pour the crushed and screened miscellaneous fill into the excavated foundation, and compact the construction site; the specific structure of the miscellaneous fill processing machine is: it includes a crawler belt 1 for moving, and The middle part of the crawler belt 1 is provided with an installation platform 3, and the installation platform 3 is provided with a loading mechanism and a cru...

Embodiment 2

[0041] This embodiment is a comparative benchmark test

[0042] Before the excavation of the foundation, the surface cleaning of the construction area should be completed first.

[0043] After cleaning the table, the construction area is positioned and laid out, and the foundation is mechanically excavated to the design depth.

[0044] The plain soil (filler 1 for short, excluding construction waste and sundries) is transported out for foundation backfilling.

[0045] The moisture content of the tested plain soil is 13.7%, which is equal to the optimal moisture content corresponding to the maximum dry density measured in the laboratory, and meets the construction conditions (the construction moisture content range is the optimal moisture content ± 2%, the same below).

[0046] Backfill the foundation in 6 layers, and the thickness of each layer of backfill paving is 30cm.

[0047] Use a 20-ton vibratory road roller, press the initial static pressure once, after the backfill ...

Embodiment 3

[0050] Before the excavation of the foundation, the surface cleaning of the construction area should be completed first.

[0051] After cleaning the table, the construction area is positioned and laid out, and the foundation is mechanically excavated to the design depth.

[0052] The miscellaneous fill soil excavated from the original foundation is mainly composed of large pieces of construction waste and mixed soil with a maximum particle size of less than 7cm (original soil and small particle construction waste) after manual selection and removal of sundries.

[0053] It has been confirmed that the bulk construction waste contains 64.5% red bricks and 35.5% concrete. The mixed soil contained 15.9% of broken bricks and 3.5% of mortar blocks with a particle size of 5 mm or more.

[0054] Use the miscellaneous filling soil processing machine to crush and screen the miscellaneous filling soil from which impurities have been removed into qualified backfill (filler 2 for short). ...

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Abstract

The invention discloses a method for improving miscellaneous fill and improving the backfill quality of a composite foundation. The method comprises the steps that impurities in the miscellaneous fillare separated from the miscellaneous fill; the miscellaneous fill containing building waste and industrial harmless waste is crushed to from a backfill material; and the composite foundation with thehigh backfill quality is manufactured through a mechanical technology. According to the composite foundation manufactured through the method, the discarded building waste and the industrial harmlesswaste are effectively utilized, the using amount of natural soil is decreased, and the purpose of cyclic utilization of waste is achieved; the settling volume is greatly decreased under the premise ofmeeting the requirement of equivalent bearing capacity; and the treatment efficiency of the miscellaneous fill is improved by improving a treating machine, and the cost is lowered.

Description

technical field [0001] The invention relates to a treatment method for miscellaneous fill, in particular to a method for improving miscellaneous fill and improving the quality of composite foundation backfill. Background technique [0002] Miscellaneous fill is the ground fill layer generated by random landfill due to human production or living activities, and it is mainly composed of construction waste, industrial harmless waste, raw soil, and domestic waste. The characteristics of miscellaneous fill are: 1. The composition of the filler material is different, the void ratio is large, and the compressibility is high; 2. The thickness of the fill layer is different, the uniformity is poor, and the bearing capacity is low; 3. The length of backfilling is different, and the degree of consolidation The difference is very large, with collapsibility and negative friction resistance; 4. Uncertainty components are large and irregular, and surveys usually cannot provide accurate fou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/18E02D3/02B02C21/02B02C18/14B02C23/16
CPCB02C18/14B02C18/142B02C21/02B02C23/16B02C2018/147B02C2023/165E02D3/02E02D17/18
Inventor 胡显锋何丹任建岩姜月琴徐新锋吴建华胡昭原洪敬福
Owner 金华市中天城建绿色再生资源有限公司
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