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Technology of large-energy dynamic-compaction-treated foundation

A large-energy, ground-based technology, applied in infrastructure engineering, soil protection, construction, etc., can solve problems such as methods and depths that cannot meet the requirements, and achieve the effect of increasing depth, significant effect, and reducing the number of passes

Inactive Publication Date: 2016-10-19
NO 4 ENG CO LTD OF CCCC FIRST HARBOR ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The rapid development of the national economy has led to the construction of a large number of infrastructures. At the same time, in order to save limited land resources, there have been various developments at home and abroad to develop barren hills and beaches to protect cultivated land. , "blowing sand reclamation" and other land-making constructions, but the method and depth of the ordinary dynamic compaction method for these land-making constructions can no longer meet the requirements

Method used

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  • Technology of large-energy dynamic-compaction-treated foundation
  • Technology of large-energy dynamic-compaction-treated foundation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Construction survey and site leveling for the first time

[0043] ①Calibration of instruments: Calibrate the measuring instruments GPS, level and steel ruler measuring instruments;

[0044] ② Level the construction area for the first time, and dig drainage ditches on both sides of the dynamic compaction area;

[0045] ③Positioning and setting out: Use measuring instruments to measure and release the four corner pile positions in the dynamic compaction area;

[0046] (2) The first time point ramming

[0047] ①Mark the position of the first strong compaction point and measure the original ground elevation;

[0048] ② Align the rammer of the crane with the ramming point, and measure the height of the hammer top before ramming;

[0049] ③ Lift the rammer to the predetermined height, turn on the dragging device, put down the hook after the rammer falls freely, measure the elevation of the rammer top, and stop when the average tamping weight of the last two hits is 30m...

Embodiment 2

[0073] (1) Construction survey and site leveling for the first time

[0074] ①Calibration of instruments: Calibrate the measuring instruments GPS, level and steel ruler measuring instruments;

[0075] ② Level the construction area for the first time, and dig drainage ditches on both sides of the dynamic compaction area;

[0076] ③Positioning and setting out: Use measuring instruments to measure and release the four corner pile positions in the dynamic compaction area;

[0077] (2) The first time point ramming

[0078] ①Mark the position of the first strong compaction point and measure the original ground elevation;

[0079] ② Align the rammer of the crane with the ramming point, and measure the height of the hammer top before ramming;

[0080]③ Lift the rammer to the predetermined height, turn on the dragging device, put down the hook after the rammer falls freely, measure the elevation of the rammer top, and stop when the average tamping weight of the last two hits is 30m;...

Embodiment 3

[0104] (1) Construction survey and site leveling for the first time

[0105] ①Calibration of instruments: Calibrate the measuring instruments GPS, level and steel ruler measuring instruments;

[0106] ② Level the construction area for the first time, and dig drainage ditches on both sides of the dynamic compaction area;

[0107] ③Positioning and setting out: Use measuring instruments to measure and release the four corner pile positions in the dynamic compaction area;

[0108] (2) The first time point ramming

[0109] ①Mark the position of the first strong compaction point and measure the original ground elevation;

[0110] ② Align the rammer of the crane with the ramming point, and measure the height of the hammer top before ramming;

[0111] ③ Lift the rammer to the predetermined height, turn on the dragging device, put down the hook after the rammer falls freely, measure the elevation of the rammer top, and stop when the average tamping weight of the last two hits is 28m...

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Abstract

The invention discloses a technology of a large-energy dynamic-compaction-treated foundation. The technology includes the specific steps of 1, construction measurement and first-time site leveling; 2, first-time local compaction, wherein the design parameters include the single compaction energy of 5,000 kN.m, the hammer weight of 250 kN, the compaction falling distance of 20 m and the each-point compaction time number of 10-12; 3, second-time site leveling; 4, second-time local compaction, wherein the design parameters include the single compaction energy of 5,000 kN.m, the hammer weight of 250 kN, the compaction falling distance of 20 m and the each-point compaction time number of 10 or above; 5, third-time site leveling; 6, first-time full compaction; 7, fourth-time site leveling; 8, second-time full compaction; 9, fifth-time site leveling; 10, vibration rolling; 11, detection. By means of the technology, the number of compaction times is decreased, the foundation treatment depth is increased, the labor cost, the machine cost and the like are saved, and the effects of the technology are particularly remarkable in original foundations formed through sand blasting and sea filling.

Description

technical field [0001] The invention relates to the field of foundation treatment, in particular to a technology for treating foundation with high-energy dynamic compaction. Background technique [0002] The rapid development of the national economy has led to the construction of a large number of infrastructures. At the same time, in order to save limited land resources, there have been various developments at home and abroad to develop barren hills and beaches to protect cultivated land. , "blowing sand reclamation" and other land-making constructions, but the method and depth of the ordinary dynamic compaction method for these land-making constructions can no longer meet the requirements. Contents of the invention [0003] The invention aims to solve the deficiencies of the prior art, and provides a technology for treating foundation with high-energy dynamic compaction. [0004] In order to achieve the above object, the present invention adopts the following technical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/046
CPCE02D3/046
Inventor 王明磊田振海于博超
Owner NO 4 ENG CO LTD OF CCCC FIRST HARBOR ENG CO LTD
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