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A settlement monitoring device and method for strengthening highway soft soil foundation by surcharge preloading method

A soft soil foundation, settlement monitoring technology, applied in the field of foundation soil survey, infrastructure engineering, construction and other directions, can solve the problem of internal settlement misjudgment and so on

Active Publication Date: 2022-04-12
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors have found that in the treatment of soft soil foundations by the preloading preloading method, the settlement of the soft soil foundation is used as the main observation index. At present, the surface settlement of the soft soil foundation can only be monitored by equipment such as total stations and levels, while the interior of the soft soil layer At present, there is no equipment to monitor the settlement. It can only be estimated through surface settlement, which may easily lead to misjudgment of internal settlement.

Method used

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  • A settlement monitoring device and method for strengthening highway soft soil foundation by surcharge preloading method
  • A settlement monitoring device and method for strengthening highway soft soil foundation by surcharge preloading method
  • A settlement monitoring device and method for strengthening highway soft soil foundation by surcharge preloading method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0064] Specific Example 1: Subsidence Monitoring of Highway Soft Soil Foundation Strengthened by Heaping Preloading Method

[0065] (1) Excavate a pit twice the size of the concrete base in the foundation. The depth of the bottom of the pit should be deeper than that of the soft soil layer. Level the bottom of the pit, place the concrete base in the pit, and cover the pit with soil. fill up.

[0066] (2) Install the device according to the method of use of the present invention, and backfill the soft ground layer in the pit.

[0067] (3) Read the readings of the laser rangefinder according to the landfill time to obtain the settlement of the highway soft soil foundation.

specific Embodiment 2

[0068] Specific embodiment 2: monitoring of expressway subgrade deformation during operation

[0069] The subgrade deformation of the expressway during the operation period is one of the main indicators to reflect the operation status of the highway. This equipment can monitor the deformation of the subgrade of the expressway at different depths to further evaluate the operation status of the expressway. Mainly through the following steps:

[0070] (1) Install the concrete foundation of the equipment on the foundation of the isolation zone in the middle of the highway at the initial stage of expressway construction, and assemble the guide rod, pull piece and steel wire rope of the equipment during the construction of the expressway subgrade.

[0071] (2) After the expressway is completed, the deformation reading device is installed on the guide rod.

[0072] (3) Read the initial reading of the laser range finder on the deformation reading device.

[0073] (4) During the oper...

specific Embodiment 3

[0074] Specific Example 3: Monitoring of Consolidation and Settlement of River Flush Fill

[0075] The main measure of river dredging is to use machinery to extract the flushing soil in the river to the back side of the embankment. The backfill soil consolidates and settles under the action of its own weight, and its strength gradually increases to reinforce the embankment. However, the internal deformation of the backfill soil cannot be monitored, and the degree of internal consolidation cannot be estimated. The equipment of the present invention can be used to hedge The internal settlement of the fill is monitored, and the main steps are as follows:

[0076] (1) Dig out a pit twice the size of the concrete base on the backfill foundation, level the bottom of the pit, put the concrete base in the pit, and fill the pit with soil.

[0077] (2) Assemble the equipment according to the usage method of this equipment.

[0078] (3) After assembling the device, take the initial rea...

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Abstract

The invention discloses a subsidence monitoring device for strengthening highway soft soil foundation by a preloading preloading method and a use method thereof, which specifically includes a concrete base, a steel base, a guide rod, a flange, a pull piece and a deformation reading device. The concrete base is The cylindrical structure is connected with the steel base by bolts, and the steel base flange is connected with the guide rod. The guide rod is made of Q235 steel, divided into four sections, and the guide rods are connected by flanges. The flange is divided into a main flange and a right flange, which are connected by bolts. The pull piece is made of Q235 steel and settles together with the soft soil layer. The deformation reading device is composed of a laser rangefinder, a guide piece, a slide rail, a slide piece, a spring, a pulley, a bottom plate, a top plate, a beam piece, and a tightening bolt.

Description

technical field [0001] The invention relates to the field of soft soil layer deformation monitoring, in particular to a soft soil layer deformation monitoring device and an application method thereof. Background technique [0002] There are a large number of modern sedimentary soft soil strata distributed in my country, which have high water content, low strength and high compressibility. When building buildings on this kind of stratum, it is necessary to preload the stratum by using the surcharge method to increase the strength of this kind of stratum. The surcharge preloading method is mainly to fill heavy objects on the soft soil layer to achieve the purpose of rapid reinforcement of the soft soil foundation. However, the inventors have found that in the treatment of soft soil foundations by the preloading preloading method, the settlement of the soft soil foundation is used as the main observation index. At present, the surface settlement of the soft soil foundation can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D1/00
CPCE02D1/00
Inventor 刘健解全一李佳薛志超陈鲁川韩勃王剑宏常洪雷
Owner SHANDONG UNIV