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Vacuum preloading construction structure and method for soft soil foundation

A soft soil foundation, vacuum technology, applied in infrastructure engineering, soil protection, gaskets, etc., can solve problems such as settlement, pipeline shedding, and unsecured foundation density, achieving high stability and improving support stability. sexual effect

Active Publication Date: 2020-06-05
深圳市蛇口招商港湾工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned existing technical solutions have the following defects: in the treatment process of the above-mentioned vacuum preloading soft soil foundation, when the vacuuming equipment is used for vacuuming, the soft soil gradually becomes denser, and the air and pore water in the soft soil In the process of being continuously drawn out, the foundation will settle. During the settlement of the foundation, the lateral drainage branch pipes and horizontal drainage main pipes will fall off, resulting in poor sealing during the preloading process and unsatisfactory foundation compactness. to guarantee

Method used

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  • Vacuum preloading construction structure and method for soft soil foundation
  • Vacuum preloading construction structure and method for soft soil foundation
  • Vacuum preloading construction structure and method for soft soil foundation

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A pre-compressed construction structure for soft soil foundations, such as figure 1 with figure 2 As shown, it includes a plurality of drainage boards 1 inserted below the soft soil foundation. The plurality of drainage boards 1 are provided in multiple groups, and the multiple drainage boards 1 in each group are arranged along the same straight line, and the multiple drainage boards in each group The top of the plate 1 is connected with the same horizontal branch pipe 2, and the top of the horizontal branch pipe 2 is connected with a drainage main pipe 3, the drainage main pipe 3 is connected with multiple horizontal branch pipes 2, and the drainage main pipe 3 is connected with a vacuuming device 4 to ensure each connection For the stability of the pipeline, an anti-settling component 5 for supporting the horizontal branch pipe 2 is inserted in the soft soil foundation, and the anti-settling component 5 can prevent the horizontal branch pipe 2 and the drainage main pipe...

Embodiment 2

[0048] A vacuum preloading construction method for soft soil foundation, the steps are as follows:

[0049] S1. Laying a sealing film 6 on the ground, and opening a sealing trench 7 around the foundation that needs to be vacuum preloaded. The sealing film 6 is located in the sealing trench 7 and backfilled with sand to compress the sealing film 6;

[0050] S2. Insert the drainage plate 1 so that the drainage plate 1 passes through the sealing film 6 and is inserted below the ground;

[0051] S3. Set the anti-settling assembly 5 between the two adjacent drainage boards 1. First, put the sliding sleeve 52 on the top of the support rod 53, then insert the support rod 53 below the ground, and adjust the position of the sliding sleeve 52, Make the upper surface of the arc-shaped plate 533 abut the lower surface of the horizontal branch pipe 2 and make the horizontal branch pipe 2 communicate with the interior of the drainage plate 1;

[0052] S4. Install the main drainage pipe 3 so that th...

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Abstract

The invention relates to a vacuum preloading construction method for a soft soil foundation, and belongs to the technical field of soft soil foundation treatment. A vacuum preloading construction structure for the soft soil foundation includes a plurality of drainage plates inserted below the soft soil foundation, a plurality of parallel horizontal branch pipes are arranged at the top ends of thedrainage plates in a communication mode, each horizontal branch pipe communicates with a plurality of drainage plates, a same main drainage pipe is arranged at the top ends of the multiple horizontalbranch pipes in a communication mode, the main drainage pipe is provided with vacuum-pumping equipment in a communication mode, the horizontal branch pipes are each provided with a plurality of sets of anti-settling components in the own axis direction, the anti-settling components each include a supporting column driven vertically below the foundation, the lower surfaces of the supporting columnsare connected with the bottoms of the horizontal branch pipes in an abutting mode, sliding sleeves slidably sleeve the top ends of the supporting columns, and the sliding sleeves are hollow inside and are provided with supporting rods capable of lifting up as the supporting columns descend and supporting the horizontal branch pipes in a hinged mode along both sides in the axial direction of the horizontal branch pipes. The vacuum preloading construction structure for the soft soil foundation has the effect of preventing settlement of the communicating pipes along with the foundation.

Description

Technical field [0001] The invention relates to the technical field of soft soil foundation treatment, in particular to a soft soil foundation vacuum preloading construction method. Background technique [0002] A large amount of soft soil is distributed in the coastal areas along the Yangtze River in my country. Today, when construction land is becoming increasingly tight, how to deal with these soft soils to meet the needs of engineering construction has always been a technical problem. Oil and gas is the treatment of hydraulic fill in the southeast coastal area, and it has become a key technology for coastal ports, transportation and urban construction. [0003] Since the 1980s, my country began to propose and apply vacuum preloading to treat soft soil foundations. The essence of vacuum preloading to treat soft soil foundations is a process of drainage and consolidation, which is to use vacuum equipment to remove the sealing membrane and the soil. The air in the soil is drawn ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
CPCE02D3/10E02D2250/0053E02D2450/106
Inventor 成艺邓小刚胡亚新冒盛云彭若宏
Owner 深圳市蛇口招商港湾工程有限公司
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