CN214061716U

CN214061716U - Testing arrangement of cement soil mud lateral pressure

Info

Publication number: CN214061716U
Application number: CN202022728201.7U
Authority: CN
Inventors: 陈甦; 陈洁瑶; 杨昌锦; 钱林根; 徐亚萍
Original assignee: Suzhou University
Current assignee: Suzhou University
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-08-27
Anticipated expiration: 2030-11-23

Abstract

The utility model discloses a soil cement mud lateral pressure's testing arrangement, including the soil pressure cell, the lantern ring, the soil pressure cell is fixed the lantern ring is intra-annular, the bottom of the lantern ring is fixed with the plug-in components, the through-hole has been seted up at the top of the lantern ring, through-hole department is provided with fixed pipe, fixed pipe can be dismantled and be connected with the extension pipe, the test wire of soil pressure cell passes in proper order through-hole, fixed pipe just penetrate in the extension pipe. The utility model discloses fix soil pressure cell in the lantern ring that is equipped with the cutting edge, be favorable to accurately setting up soil pressure cell a certain degree of depth in cement soil mud, set up the accuracy and set up efficiently, guarantee simultaneously that soil pressure cell is perpendicular not damaged with the test wire, improve the measuring accuracy, recoverable soil pressure cell used repeatedly, reduce cost.

Description

Testing arrangement of cement soil mud lateral pressure

Technical Field

The utility model relates to a foundation ditch engineering construction technical field especially relates to a soil cement mud lateral pressure's testing arrangement.

Background

In foundation pit engineering construction, in order to facilitate earth excavation or prevent a pit bottom from surging, the water level (diving) or the water pressure (micro confined water or confined water) of underground water in a foundation pit needs to be reduced. Because the precipitation in the pit can cause the underground water level outside the pit to drop, and further cause the settlement of peripheral buildings (structures) or underground pipelines, a fully-closed or suspended waterproof curtain is arranged at the periphery of the foundation pit to separate or control the hydraulic connection inside and outside the foundation pit, and the settlement of the peripheral buildings (structures) or underground pipelines caused by the precipitation in the pit is eliminated or reduced.

Cement soil piles (such as cement mixing piles, high-pressure jet grouting piles, MJS construction piles and the like) and cement soil walls (TRD construction walls, CSM construction walls and the like) are column-type or equal-thickness waterproof curtains commonly used in engineering. Any of the above waterproof curtains is a soil cement waterproof curtain formed by mixing cement paste with undisturbed soil using different construction tools and methods.

When the surrounding environment of the foundation pit is complex, the lateral pressure of the cement soil slurry needs to be known so as to analyze and research the influence of the cement soil waterproof curtain on adjacent buildings, pipelines and the like when the cement soil waterproof curtain is formed but not hardened. The mud lateral pressure test method comprises the following steps: the soil pressure cell is directly pressed into the preset depth of the slurry, the frequency transmitted by a lead of the soil pressure cell is measured and read by a frequency instrument (a secondary instrument), and the lateral pressure of the slurry at a certain depth is obtained by a corresponding calculation formula.

Because the cement soil mud has certain consistency, the soil pressure box is difficult to press in due to resistance if the soil pressure box is directly pressed into the soil pressure box to a certain depth during testing; even if the pressure plate can be pressed into a preset depth, the soil pressure box is difficult to be vertical or the lead is difficult to be damaged; after the test is completed, the soil pressure cell is difficult to recover.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a soil cement mud lateral pressure's testing arrangement.

In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:

the utility model provides a testing arrangement of cement soil mud lateral pressure, includes soil pressure cell, the lantern ring, soil pressure cell fixes the lantern ring is intra-annular, the bottom of the lantern ring is fixed with the plug-in components, the through-hole has been seted up at the top of the lantern ring, through-hole department is provided with the protection tube, soil pressure cell's test wire passes in proper order the through-hole just penetrates in the protection tube.

As a further improvement, the lantern ring is provided with two at least mounting holes, every mounting hole department is connected with the bolt, the bolt with soil pressure cell looks butt.

As a further improvement of the utility model, the insert is a cutting edge.

As a further improvement of the present invention, the cutting edge is welded and fixed to the bottom of the sleeve ring.

As a further improvement of the utility model, the protection tube including fixed pipe, with the extension pipe of connection can be dismantled to fixed pipe, fixed pipe sets up through-hole department, the extension pipe includes at least one connecting pipe.

As a further improvement of the utility model, the length of the connecting pipe is 0.8-1.2 m.

As a further improvement of the utility model, the connecting pipe is a connecting steel pipe.

As a further improvement of the present invention, the fixing tube is welded and fixed to the top of the sleeve ring.

As a further improvement, the fixed pipe is a fixed steel pipe.

The utility model has the advantages that:

the utility model discloses fix soil pressure cell in the lantern ring that is equipped with the cutting edge, be favorable to accurately setting up soil pressure cell a certain degree of depth in cement soil mud, set up the accuracy and set up efficiently, guarantee simultaneously that soil pressure cell is perpendicular not damaged with the test wire, improve the measuring accuracy, recoverable soil pressure cell used repeatedly, reduce cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of a testing device according to a preferred embodiment of the present invention;

FIG. 2 is a side view of a testing device in accordance with a preferred embodiment of the present invention;

fig. 3 is a schematic diagram of the testing device according to the preferred embodiment of the present invention;

in the figure: 10. the soil pressure box comprises a soil pressure box body 12, a lantern ring 14, a through hole 16, a test lead wire 18, a bolt 20, a blade 22, a fixed pipe 24, a connecting pipe 26 and cement soil slurry.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

As shown in fig. 1-2, a testing device for lateral pressure of soil cement slurry comprises a soil pressure cell 10 and a lantern ring 12, wherein the soil pressure cell 10 is fixed in the lantern ring 12, so that the soil pressure cell 10 is kept in a vertical state during testing, a plug-in is fixed at the bottom of the lantern ring 12, the plug-in can be conveniently inserted into the soil cement slurry, a through hole 14 is formed in the top of the lantern ring 12, a protection pipe is arranged at the through hole 14, a testing lead 16 of the soil pressure cell 10 penetrates through the through hole 14 and the protection pipe, the testing lead 16 is protected by the protection pipe, and the testing lead 16 is prevented from being damaged.

The utility model discloses the internal diameter of preferred lantern ring 12 is slightly bigger than the diameter of soil pressure cell 10, and the soil pressure cell 10 of being convenient for is put into lantern ring 12. It is further preferable that the thickness of the collar 12 is slightly larger than the thickness of the soil pressure cell 10, to enhance the strength of the collar 12.

In order to fix the soil pressure cell 10, the preferred lantern ring 12 of the present invention is provided with at least two mounting holes (not shown in the figure), each mounting hole is connected with a bolt 18, and the bolt 18 abuts against the soil pressure cell 10. It is further preferred that the mounting hole is a threaded hole, the bolt 18 is threadedly coupled to the mounting hole,

in the cement soil mud is impressed in for the convenience of being equipped with testing arrangement, the utility model discloses preferred plug-in components are cutting edge 20, overcome the resistance fast through cutting edge 20, reduce testing arrangement's the time of impressing, and impress the predetermined degree of depth fast.

The utility model discloses preferred cutting edge 20 and the bottom welded fastening of the lantern ring 12 improve the steadiness of cutting edge 20 and lantern ring 12.

The utility model discloses preferred protection tube includes fixed pipe 22, can dismantle the extension pipe of being connected with fixed pipe 22, and fixed pipe 22 sets up in through-hole 14 department, and the extension pipe includes at least one connecting pipe 24, is convenient for impress the different degree of depth of cement soil mud.

The length of the connecting pipe 24 is preferably 0.8-1.2m, so that the utility model is convenient to process and install. It is further preferable that the length of the connection tube 24 is 1.0 m. A plurality of connecting pipes 24 can be installed according to the testing depth, and the adjacent connecting pipes 24 can be connected through threads, so that the installation or the disassembly is convenient.

In order to improve the stability of the connecting pipe 24, the utility model discloses preferred connecting pipe 24 is the connecting steel pipe.

The utility model discloses preferred connecting pipe 24 and fixed 22 threaded connection of pipes, the installation and the dismantlement of being convenient for.

The utility model discloses the fixed pipe 22 welded fastening is preferably in through-hole 14 department, improves the steadiness of fixed pipe 18 and lantern ring 12.

In order to improve the steadiness of the fixed pipe 22, the utility model discloses the fixed pipe 22 of preferred is fixed steel pipe.

As shown in fig. 3, the working principle of the present invention is as follows:

placing the soil pressure cell 10 into the lantern ring 12, screwing two bolts 18 to fix the soil pressure cell 10, and sequentially passing the test lead 16 of the soil pressure cell 10 through the through hole 14 and the fixing tube 22; the test lead 16 is inserted into the first connecting pipe 24, and the connecting pipe 24 and the fixed pipe 22 are screwed tightly; the collar 12 is inserted into the cement slurry 26 through the blade 20, testing the lateral pressure at different depths; after the test is completed, the connecting tube 24 is removed from the fixed tube 22, the collar 12 is pulled out, and the two bolts 18 are loosened to take out the soil pressure cell 10.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a testing arrangement of cement soil mud lateral pressure, its characterized in that, includes soil pressure cell, the lantern ring, soil pressure cell fixes in the lantern ring, the bottom of the lantern ring is fixed with the plug-in components, the through-hole has been seted up at the top of the lantern ring, through-hole department is provided with the protection tube, soil pressure cell's test wire passes in proper order the through-hole just penetrates in the protection tube.

2. The device for testing the lateral pressure of the cement-soil mud as claimed in claim 1, wherein at least two mounting holes are arranged on the lantern ring, each mounting hole is connected with a bolt, and the bolt abuts against the soil pressure box.

3. The device for testing the lateral pressure of cement-soil mud as claimed in claim 1, wherein said insert is a knife edge.

4. The device for testing the lateral pressure of cement-soil mud as claimed in claim 3, wherein said knife edge is welded to the bottom of said collar.

5. The device for testing the lateral pressure of cement-soil mud as claimed in claim 1, wherein said protection tube comprises a fixed tube and an extension tube detachably connected with said fixed tube, said fixed tube is disposed at said through hole, said extension tube comprises at least one connection tube.

6. The device for testing the lateral pressure of cement-soil mud as claimed in claim 5, wherein the length of the connecting pipe is 0.8-1.2 m.

7. The device for testing the lateral pressure of cement-soil mud of claim 5 or 6, wherein the connecting pipe is a connecting steel pipe.

8. The device for testing the lateral pressure of cement-soil mud as claimed in claim 5, wherein said fixed pipe is welded and fixed at said through hole.

9. The device for testing the lateral pressure of the cement-soil mud as claimed in claim 5 or 8, wherein the fixed pipe is a fixed steel pipe.