NL2032555A - Assembled Half-face Pile Test Compaction-Loading Integrated Model Box - Google Patents

Assembled Half-face Pile Test Compaction-Loading Integrated Model Box Download PDF

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Publication number
NL2032555A
NL2032555A NL2032555A NL2032555A NL2032555A NL 2032555 A NL2032555 A NL 2032555A NL 2032555 A NL2032555 A NL 2032555A NL 2032555 A NL2032555 A NL 2032555A NL 2032555 A NL2032555 A NL 2032555A
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model
pile
plate
model box
test
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NL2032555A
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Dutch (nl)
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NL2032555B1 (en
Inventor
Wang Ruozhu
Jiang Xin
Deng Haoyun
Qian Yongmei
Tian Wei
Niu Lei
Zhu Chunfeng
Liu Ning
Xu Lina
Sun Shuang
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Univ Jilin Jianzhu
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Publication of NL2032555A publication Critical patent/NL2032555A/en
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Publication of NL2032555B1 publication Critical patent/NL2032555B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00—Investigation of foundation soil in situ
    • E02D1/02—Investigation of foundation soil in situ before construction work
    • E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
    • E02D1/025—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil combined with sampling
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00—Investigation of foundation soil in situ
    • E02D1/02—Investigation of foundation soil in situ before construction work
    • E02D1/04—Sampling of soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00—Testing foundations or foundation structures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24—Earth materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001—Type of application of the stress
    • G01N2203/0003—Steady
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0019—Compressive
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003—Generation of the force
    • G01N2203/0042—Pneumatic or hydraulic means
    • G01N2203/0048—Hydraulic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0076—Hardness, compressibility or resistance to crushing
    • G01N2203/0085—Compressibility
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0284—Bulk material, e.g. powders

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

Disclosed is an assembled half-face pile test compaction-loading integrated model box, which comprises a model box body, wherein a constraint member is installed in the model box body, a model box plate is installed at one side of the model box body, and a pile port small piece placement opening is formed at the bottom of the model box plate for installing clay-pile port small pieces or sand-pile port small pieces; two sides of the model box body are provided with hydraulic piston lifting systems for rotating the model box body from the vertical state to the horizontal state. According to the invention, the soil compaction stage in the model pile test and the pile loading stage in the formal test are combined into one, so that the seamless connection between the soil compaction and the test loading is realized, and the position of the model pile is determined in advance for embedding, so that the disturbance of the subsequent pile embedding to the soil around the pile can be avoided, the influence on the soil properties in the whole test process can be avoided to the greatest extent, and the damage of the pile embedding process to the relationship between the model pile and the soil can be avoided, so that the whole test can approach the actual engineering situation more accurately.

Description

Assembled Half-face Pile Test Compaction-Loading Integrated Model Box
TECHNICAL FIELD
The invention relates to the field of indoor simulation test of pile type and soil quality, in particular to an assembled half-face pile test compaction-loading integrated model box.
BACKGROUND
At present, the indoor test device of model pile has been widely used in civil engineering, traffic engineering, marine engineering and other fields to carry out indoor simulation tests of various pile types and soils. However, the existing equipment usually has the following shortcomings: 1. Most of the existing equipment is post-pile-burying, that is, the soil is compacted or remoulded and consolidated first, and then the pile is buried on the surface after the soil is formed.
This treatment will inevitably disturb the soil around the pile and the combination effect of pile and soil, which will affect the test accuracy. 2. At present, most of the tests related to model piles are separated from the test loading stage. First, the soil is remoulded or compacted, and then the remoulded and compacted sail is transferred to the box used in the test for pile burying and loading test. The remoulded and compacted process is separated from the box used in the test process, and the soil needs to be transferred. In this process, the soil around the pile will be disturbed and destroyed to a great extent, which will affect the test accuracy. Moreover, the transfer mode is inconvenient and time- consuming and laborious. 3. For the tests related to sand and clay, at present, different test boxes are used separately, which increases the test cost and limits the test. 4. At present, the size of the model box is usually relatively large, which is inconvenient for cutting and transporting soil samples.
SUMMARY
Aiming at the above technical problems, the present invention provides an assembled half- face pile test compaction-loading integrated model box, which combines the compaction stage of soil in model pile test with the loading stage of pile in formal test, realizes seamless connection between soil compaction and test loading, and sets the position of model pile in advance to bury it, so as to avoid the disturbance of subsequent pile burying to the soil around the pile, avoid the influence on soil properties in the whole test process to the greatest extent, and avoid the damage to the relationship between model pile and soil in the pile burying process, making the whole test more accurate and close to the actual engineering situation. The used test soil can be all kinds of soil, which can reduce the test time, test cost and save manpower.
In order to achieve the above object, the present invention provides the following technical scheme.
The invention relates to an assembled half-face pile test compaction-loading integrated model box, which comprises a model box body, wherein a constraint member is installed in the model box body; the constraint member is sequentially provided with a fixing plate, a force-holding plate and a bottom plate from top to bottom; a loading device hole is reserved in the fixing plate for adding sand or clay; the force-holding plate is used for capping the sand or clay to apply load; the bottom plate comprises two layers; a circular hole is formed in the bottom plate of the first layer for placing permeable stones; water seepage seams are formed around the bottom plate of first layer, and a gap is formed between the two layers of bottom plates for water seepage when remoulding soil; one side of the model box body is provided with a model box plate, and the bottom of the model box plate is provided with a pile port small piece placement opening for installing clay-pile port small pieces or sand-pile port small pieces; two sides of the model box body are provided with hydraulic piston lifting systems for rotating the model box body from a vertical state to a horizontal state.
Further, the bottom of the inner wall of the model box body is provided with a tempered glass clamping slot for inserting a tempered glass plate; the bottom of the model box body is provided with bottom plate screw holes for installing and fixing the bottom plate; the tops of the two side walls of the model box body are respectively provided with symmetrically arranged fixing plate clamping slot and fixing plate screw holes for clamping and fixing the fixing plates on the box body; the outer sides of the two side walls of the model box body are respectively provided with symmetrically arranged rotating screws for connecting and installing a hydraulic piston lifting system; one side of the model box body is provided with box plate screw holes, which is used for mounting the box plate of the model box.
Furthermore, box plate screw holes are formed on both side edges of the box plate of the model box, and are fixed on one side of the model box body by bolts.
Furthermore, two force-force-holding blocks are arranged between the force-holding plate and the fixing plate, and the two force-force-holding blocks cling to the inner walls of both sides of the box body, and are fixed at the force-force-holding block screw holes of the model box body by screws, so that the force-holding plate is fixed and connected with the fixing plate.
Further, the two sides of the fixing plate form bumps which are used for clamping in the groove of the fixing plate and fixing in the fixing plate screw holes through screws.
Further, the fixing plate comprises two inserted split bodies.
Furthermore, a model pile fixing port is formed on one side of the bottom plate adjacent to the model box plate, and the model pile fixing port is located at the outer side of the pile port small piece placement opening.
Furthermore, the hydraulic piston lifting system comprises a hydraulic oil pump, a lever handle, an oil delivery valve, an oil delivery pipe and two hydraulic rotating bracket assemblies,
wherein the lever handle and the oil delivery valve are positioned on the hydraulic oil pump, and the two hydraulic rotating bracket assemblies are controlled by the same hydraulic oil pump and the oil delivery valve through two oil delivery pipes, so that the same lifting and lowering are realized, and the model box is rotated from the vertical state to the horizontal state.
Further, the hydraulic rotary bracket assembly comprises a ball pulley interface bearing, a hydraulic piston jack and a base bracket, wherein the base bracket is fixed on the loading platform and connected with the hydraulic piston jack and the ball pulley bearing into a whole; the base bracket is connected to the lower end of the hydraulic piston jack; and the ball pulley interface bearing is connected to the upper end of the hydraulic piston jack, and is used for sleeving in the box to rotate the box body after rotating the screw.
Furthermore, the lever handle is also connected with a digital display instrument panel.
Compared with the prior art, the invention has the advantages that: 1. The assembled half-face pile test compaction-loading integrated model box provided by the invention can embed the pile in advance, reduce the disturbance of the soil around the pile in the later stage, make the combination between the pile and the soil closer to the actual project, avoid the disturbance of the soil around the pile and the combination effect of the pile and the soil, and ensure the test accuracy. 2. The invention combines the remoulding and compaction of soil with the box used in the later test, realizes the functions of pressure compaction and test loading, simplifies the original test process, makes the test seamless, reduces the disturbance to the soil, ensures the test accuracy, and saves time and labour costs. 3. The invention is equipped with different bottom devices, which can be used for reshaping different types of soil, and different soil can be selected for testing according to the test requirements, so as to meet the requirements of pile burying and test observation of sandy soil and various clay. If the pile- sand and other related tests are studied, the prefabricated model pile can be compacted and tested by placing it in the model box. If the pile- clay and other related tests are studied, the remoulded soil consolidation technology can be realized. 4. The hydraulic piston lifting system is provided in the invention, which facilitates the lifting and placement of the model box, reduces the disturbance of the model box to the pile and soil in the transportation process, ensures the test accuracy, and realizes that one person can operate the whole test process, saving manpower. 5. The invention is an assembled structure, and all components can be assembled on site after prefabrication in the factory, and can be manufactured in batches. All parts and test materials can be reused, which greatly reduces the test cost, and all kinds of components can be replaced. 6. The invention is a small model box, which is more portable and convenient for cutting and transporting soil samples. 7. The invention has a wide application range, and can realize the comparative test analysis of soil compactness, water content, particle size, consolidation time, consolidation pressure and other parameters, as well as monitor the relationship between consolidation pressure and displacement of soil in the remodelling process.
BRIEF DESCRIPTION OF THE FIGURES
In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some of the embodiments recorded in the present invention, and others can be obtained according to these drawings for those of ordinary skill in the art.
Fig. 1 is the first schematic diagram of the overall structure of the assembled half-face pile test compaction-loading integrated model box provided by the embodiment of the invention.
Fig. 2 is the overall structure schematic diagram 2 of the assembled half-face pile test compaction-loading integrated model box provided by the embodiment of the invention.
Fig. 3 is a structural diagram of the model box provided by the embodiment of the present invention.
Fig. 4 is a structural diagram of a model box plate provided by the embodiment of the invention.
Fig. 5 is a structural diagram of a restraint member provided by an embodiment of the present invention.
Fig. 6 shows the hydraulic piston lifting system provided by the embodiment of the invention.
Fig. 7 shows the rising state of the model box provided by the embodiment of the present invention.
Fig. 8 shows the rotating state of the model box provided by the embodiment of the invention.
Fig. 9 shows the horizontal descending state of the model box provided by the embodiment of the present invention.
Description of reference numerals: 100 model box body; 101 force-holding block screw hole; 102 clamping slot for fixing plate; 103 screw hole for fixing box plate; 104 fixing plate screw hole; 105 tempered glass clamping slot; 106 rotating screw; 107 Bottom plate screw hole; 200 model box plate; 201 box plate screw holes; 202 clay-pile port small pieces; 203 sand- pile port small pieces; 204 pile port small piece placement opening; 300 Restraint members; 301 fixing plate; 302 Reserved holes for loading equipment; 303 Bumps; 304 force-holding block; 305 force-holding plate; 306 bottom plate; 307 model pile fixing port; 38 fixing screw hole of bottom plate; 309 circular hole; 10 seepage seam; 400 hydraulic piston lifting system; 401 hydraulic oil pump; 402 lever handle; 403 digital display instrument panel; 404 oil delivery valve; 405 oil delivery pipe; 406 ball pulley interface bearing; 407 hydraulic piston jack; 48 base bracket.
DESCRIPTION OF THE INVENTION
In order to enable those skilled in the art to better understand the technical scheme of the present invention, the present invention will be further described in detail below with reference to the drawings and examples.
As shown in Fig. 1-9, the assembled half-face pile test compaction-loading integrated model box provided by the invention comprises a model box body 100, a model box plate 200, a 5 constraint member 300 and a hydraulic piston lifting system 400.
As shown in Figs. 1 and 3, the bottom of the inner wall of the model box body 100 is formed with a tempered glass clamping slot 105 for inserting a tempered glass plate; the bottom of the model box body 100 is provided with bottom plate screw holes 107 for mounting the fixing bottom plate 308. The tops of the two side walls of the model box body 100 are respectively formed with symmetrically arranged fixing plate clamping slots 102 and fixing plate screw holes 104 for clamping and fixing the fixing plate 301 on the model box body 100; symmetrical rotating screws 106 are respectively formed on the outer sides of the two side walls of the model box body 100, which are used for connecting and installing the hydraulic piston lifting system 400; one side of the model box body 100 is formed with screw holes 103 for fixing box plate for mounting the model box plate 200.
As shown in Fig. 1 and Fig. 4, one side of the model box body 100 is provided with a model box plate 200, and two side edges of the model box plate 200 are provided with box plate screw holes 201, which are fixed at the fixing box plate screw holes 103 of the model box body 100 by bolts. At the bottom of the model box plate 200, there is a pile port small piece placement opening 204 for installing the clay-pile port small piece 202 or the sand-pile port small piece 203.
As shown in Fig. 1 and Fig. 5, a constraint member 300 is installed inside the model box body 100, and the constraint member 300 is provided with a fixing plate 301, a force-holding block 304, a force-force-holding plate 305 and a bottom plate 306 from top to bottom. A loading device hole 302 is reserved in the fixing plate 301 for mounting the fixing plate 301 without unloading the loading device, and the fixing plate 301 comprises two inserted split bodies, which are convenient for mounting and dismounting. The two sides of the fixing plate 301 form bumps 303, which are used to be clamped in the fixing plate clamping slot 102 and fixed to the fixing plate screw holes 104 by screws. The force-force-holding plate 305 is used to cover sand or clay to apply load. Two force-holding blocks 304 are arranged between the force-holding plate 305 and the fixing plate 301. The two force-holding blocks 304 cling to the inner walls of both sides of the box body, and are fixed at fixing the holding block screw holes 101 of the model box body 100 by screws, thereby fixing the force-holding plate 305 and connecting the force-holding plate 305 and the fixing plate 301. The bottom plate 306 comprises two layers, the first layer of bottom plate is internally provided with a circular hole 309 for placing permeable stones, and the periphery of the first layer of bottom plate is provided with a seepage seam 310, and a gap is formed between the two layers of bottom plates for seepage when remoulding soil. A model pile fixing port 307 is formed on one side of the bottom plate 306 adjacent to the model box plate 200, and the madel pile fixing port 307 is located outside the pile port small piece placement opening 204.
As shown in Figs. 1 and 6, hydraulic piston lifting systems 400 are installed on both sides of the model box body 100 for rotating the model box body 100 from the vertical state to the horizontal state. Specifically, the hydraulic piston lifting system 400 includes a hydraulic oil pump 401, a lever handle 402, a digital display instrument panel 403, an oil delivery valve 404, an oil delivery pipe 405, and two hydraulic rotary bracket assemblies. The lever handle 402 and the oil delivery valve 404 are located on the hydraulic oil pump 401, and the two hydraulic rotary bracket assemblies are controlled by the same hydraulic oil pump 401 and the oil delivery valve 404 through the two oil delivery pipes 405 to achieve the same lifting and lowering and the horizontal state of the model box body from vertical state. Further, the hydraulic rotary bracket assembly includes a ball pulley interface bearing 406, a hydraulic piston jack 407, and a base bracket 408, wherein the base bracket 408 is fixed on the loading platform and connected with the hydraulic piston jack 407 and the ball pulley bearing 406 as a whole; the base bracket 408 is connected to the lower end of the hydraulic piston jack 407, and the ball pulley interface bearing 406 is connected to the upper end of the hydraulic piston jack 407, so as to rotate the model box body after sleeving rotating screw 106.
Example 1
The assembled half-face pile test compaction-loading integrated model box provided by the invention comprises a model box body 100, a model box plate 200, a constraint member 300 and a hydraulic piston lifting system 400. . Model box body
The inner diameter of the model box body 100 is 300mmx300mmx400mm, and the top of the box body is provided with a fixing plate clamping slot with a size of 30mmx 100 mmx 5 mm on the left and right sides and fixing plate fixing screw hole 104 for clamping and fixing the fixing plate on the box body. Under the fixing plate screw holes 104 on both sides, there are rotating screws 106 for using the hydraulic piston lifting system, and at the bottom, there are slots 105 for clamping tempered glass plates and bottom plate screw holes 107 for fixing the bottom plate.
II, the model box plate
The size of the model box plate 200 is 390mmx400mmx5mm, and the bottom of the model box plate 200 is provided with a detachable pile port small piece with holes of all used piles, which is used to leak out the pile head and fix the pile body. It plays the role of fixing the pile body and restraining sand in the pressure compaction stage, and is removed in the test loading stage.
II. Constraint members
The size of the force-holding plate 305 is 300mmx300mmx5mm. After the box body, tempered glass, box plate and bottom plate are assembled and sand or clay is added, the force- holding plate 305 is covered and pressed on the sand or clay, and then the pressure can be compacted or the soil can be reshaped by applying a load.
The size of the force-holding block 304 is 150mmx60mmx5mm. Two force-force-holding blocks are placed on the force plate, close to the left and right inner walls of the box body. After being fixed on the box body by screws, the force-holding plate can be fixed and connected with the fixing plate.
The size of the fixing plate 301 is 300mm x 300mm x 5mm. The left and right bumps of the fixing plate are clamped into the clamping slots on the upper part of the box body, and then pressed on the force-holding block for fixing, so that the soil in the box can be kept unchanged.
Bottom plate 306: the size of the first layer: 340mm x 340mm x 5mm. There are four circular holes 309 inside to put permeable stones, and the surrounding fine seams are permeable seams 310. When clay is used in the test, this face is taken as the front face. The size of the second layer of the bottom plate is 300mmx=300mmx5mm, and the gap between the two layers is used for water seepage when remoulding soil. When sandy soil is used in the test, this surface is taken as the reverse side, and it is attached to the toughened glass plate.
IV. Hydraulic piston lifting system
The hydraulic piston lifting system is used to change the filled model box after compaction or remodelling from the vertical state to the horizontal state for subsequent test loading.
The hydraulic piston lifting system 400 consists of a hydraulic oil pump 401, a lever handle 402, a digital display instrument panel 403, an oil delivery valve 404, two oil delivery pipes 405, two ball pulley interface bearings 408, two hydraulic piston jacks 407 and two base brackets 408.
Two base brackets can be fixed on the loading platform and integrated with hydraulic piston jacks and ball pulley bearings. The two hydraulic piston jacks are controlled by the same hydraulic oil pump and oil delivery valve, so as to meet the requirement of maintaining the level of the model box when it rises and falls at the same time. The upper end of the hydraulic piston jack is provided with a ball pulley bearing, which can make the model box rotate after being sleeved into the rotating screw of the box body. 1. When the soil is compacted or reshaped, install hydraulic piston lifting systems at the rotating screws on the left and right sides of the model box, tighten the oil delivery valve 404, and press the lever handle 402 to lift the model box to an appropriate height, as shown in Fig. 7. 2. As most of the test soil is collected at the bottom of the box, it can ensure that the model box will not shake greatly in the air. Push the model box to an appropriate angle t, as shown in
Fig.8. 3. Then loosen the oil delivery valve 404 to return the oil from the piston of the jack 407, and the model box will be laid down smoothly by gravity, making it rotate to a horizontal position, as shown in Fig. 9.
Then the follow-up test can be carried out.
Example 2
The assembled half-face pile test compaction-loading integrated model box provided by the invention has different test steps for sandy soil and clay. For sandy soil, the test steps are as follows: (1) Place the box vertically, insert the tempered glass plate into the bottom inner groove, and then place the bottom plate under the tempered glass plate reversely and fix it with the box. (2) Fix the box plate on the box body, select the sand-pile port small piece, and place and fix the model pile on the tempered glass plate. (3) According to the test requirements, add sand in the required way. {4) Fasten the force-holding plate, and press and compact it with the holding plate. (5) Two force-holding blocks are attached to the inner wall of the box body and fixed on the force- holding plates, and then the left and right fixing plates are spliced and buckled into the slots of the box body, covered on the force-holding blocks and connected and fixed with the box body. (6) Install the hydraulic piston lifting system at the left and right rotating screws of the box body, and then fix the hydraulic piston lifting system base bracket on the bottom platform, and then use the hydraulic piston jack to jack up the model box. (7) Push the model box to a certain angle, then open the oil delivery valve of the hydraulic piston lifting system to discharge the force, and place the model box horizontally on the platform, so that the loading test can begin.
Example 3
The assembled half-face pile test compaction-loading integrated model box provided by the invention aims at clay and comprises the following test steps: (1) Place the box body vertically, fix the bottom plate with the box body positively, and then put the permeable stone into the bottom plate groove. (2) The box plate is fixed on the box body, and clay-pile port small pieces are selected, and the model pile is placed and fixed on the bottom plate. (3) According to the test requirements, add clay in the required way. (4) Fasten the force-holding plate, and apply a load with the force-holding plate, so as to carry out pressure compaction or consolidation of soil. If the consolidation operation of remoulded soil is carried out, the displacement change in the consolidation process can be known only by adding a displacement meter. (5) After being pressed and compacted or reshaped and consolidated, two force-holding blocks are attached to the inner wall of the box body and fixed on the force-holding plates, and then the left and right fixing plates are spliced and buckled into the slots of the box body, covered on the force-holding blocks and connected and fixed with the box body. (6) Install the hydraulic piston lifting system at the left and right rotating screws of the box body, fix the base bracket of the hydraulic piston lifting system on the bottom platform, and then use the hydraulic piston jack to jack up the model box. (7) Push the model box to a certain angle, then open the oil delivery valve of the hydraulic piston lifting system to discharge the force, and place the model box horizontally on the platform, so that the loading test can begin.
According to the invention, the soil compaction stage in the model pile test and the pile loading stage in the formal test are combined into one, so that the seamless connection between the soil compaction and the test loading is realized, and the position of the model pile is determined in advance for embedding, so that the disturbance of the subsequent pile embedding to the soil around the pile can be avoided, the influence on the soil properties in the whole test process can be avoided to the greatest extent, and the damage of the pile embedding process to the relationship between the model pile and the soil can be avoided, so that the whole test can approach the actual engineering situation more accurately. The test soil can be all kinds of soil. If the pile- sand and other related tests are studied, the prefabricated model pile can be compacted and tested in the model box. If the pile- clay and other related tests are studied, the remoulded soil consolidation technology can be realized. Reduce test time, test cost and save manpower.
The above examples are only used to illustrate the technical scheme of the invention, but not to limit it. Although the invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions described in the foregoing embodiments can still be modified or some technical features can be equivalently replaced, but these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the invention.

Claims (10)

CONCLUSIESCONCLUSIONS 1. Een geïntegreerde samengestelde modelbak voor een halfzijdige paaltest voor compactiebelasting, omvattende een modelbaklichaam, waarbij — de binnenzijde van de modelbak is voorzien van een begrenzingselement, — het begrenzingselement van boven naar beneden achtereenvolgens is voorzien van een bevestigingsplaat, een kracht-houdende plaat en een bodemplaat; — de bevestigingsplaat openingen heeft voor de belastingsinrichting voor het toevoegen van zand of klei, — de kracht-houdende plaat wordt gebruikt voor het afdekken van het zand of de klei om de belasting aan te brengen, — de bodemplaat twee lagen omvat, — in de bodemplaat van de eerste laag een cirkelvormige opening is gevormd voor het plaatsen van waterdoorlatende stenen; — waterdoorlatende naden rond de bodemplaat van de eerste laag zijn gevormd; — tussen de twee lagen bodemplaten een opening is gevormd voor het doorsijpelen van water bij het omvormen van grond; — een zijde van het modelbaklichaam is voorzien van een modelbakplaat, — de bodem van de modelbakplaat is voorzien van een plaatsingsopening voor kleine paalpoortdeeltjes voor het installeren van kleine paalpoortdeeltjes van klei of kleine paalpoortdeeltjes van zand; — twee zijden van de modelbak zijn voorzien van hydraulische zuigerhefsystemen voor het roteren van het modelbaklichaam van een verticale toestand naar een horizontale toestand.1. An integrated assembled model box for a half-sided pile test for compaction load, comprising a model box body, wherein — the inside of the model box is provided with a limiting element, — the limiting element is successively provided from top to bottom with a mounting plate, a force-holding plate and a bottom plate; — the mounting plate has openings for the loading device for adding sand or clay, — the force-holding plate is used to cover the sand or clay to apply the load, — the bottom plate consists of two layers, — in the bottom plate of the first layer has a circular opening formed for placing water-permeable bricks; - water-permeable seams are formed around the bottom plate of the first layer; - an opening is formed between the two layers of bottom plates for water to seep through when the soil is being transformed; — one side of the model bucket body is fitted with a model bucket plate, — the bottom of the model bucket plate is provided with a small pile gate particle placement hole for installing small clay pile gate particles or small sand pile gate particles; - two sides of the model box are equipped with hydraulic piston lift systems for rotating the model box body from a vertical position to a horizontal position. 2. De geïntegreerde samengestelde modelbak voor een halfzijdige paaltest voor compactiebelasting volgens conclusie 1, waarbij — de bodem van de binnenwand van het modelbaklichaam voorzien is van een klemgleuf voor gehard glas voor het inbrengen van een geharde glasplaat; — de bodem van het modelbaklichaam is voorzien van bodemplaatschroefgaten voor het aanbrengen van de bevestigingsbodemplaat; — de bovenkanten van de twee zijwanden het modelbaklichaam zijn voorzien van symmetrisch geplaatste bevestigingsplaatklemsleuven en bevestigingsplaatschroefgaten voor het vastklemmen en bevestigen van de bevestigingsplaten op het modelbaklichaam;The integrated composite model tray for a half-sided pile test for compaction load according to claim 1, wherein - the bottom of the inner wall of the model tray body is provided with a tempered glass clamping slot for inserting a tempered glass sheet; - the bottom of the model tank body is provided with bottom plate screw holes for mounting the fixing bottom plate; - the tops of the two side walls of the model box body are provided with symmetrically arranged mounting plate clamping slots and mounting plate screw holes for clamping and fixing the mounting plates to the model box body, — de buitenzijden van de twee zijwanden van het modelbaklichaam zijn voorzien van symmetrisch geplaatste roterende schroeven voor het aansluiten en installeren van een hydraulisch zuigerhefsysteem; — een zijde van het lichaam het modelbaklichaam is voorzien van doosplaatschroefgaten, die gebruikt worden voor het bevestigen van de bakplaat van het modelbaklichaam.- the outer sides of the two side walls of the model bucket body are equipped with symmetrically arranged rotating screws for connecting and installing a hydraulic piston lifting system; - one side of the body the model box body has box plate screw holes, which are used for fixing the box plate of the model box body. 3. De geintegreerde samengestelde modelbak voor een halfzijdige paaltest voor compactiebelasting volgens conclusie 1, waarbij twee zijranden van de bakplaat van de modelbak zijn voorzien van bakplaat-schroefgaten, welke met bouten aan een zijde van het modelbaklichaam zijn bevestigd.The integrated composite model tray for a half-sided pile test for compaction load according to claim 1, wherein two side edges of the tray plate of the template tray are provided with tray plate screw holes, which are bolted to one side of the template tray body. 4. De geintegreerde samengestelde modelbak voor een halfzijdige paaltest voor compactiebelasting volgens conclusie 1, waarbij: — er zich twee kracht-houdende blokken tussen de kracht-houdende plaat en de bevestigingsplaat bevinden, — de twee kracht-houdende blokken zich aan de binnenwanden van beide kanten van het baklichaam vastklemmen, en aan de kracht-houdende blokschroefgaten van het modelbaklichaam door schroeven zijn bevestigd, om de klemplaat te bevestigen en de klemplaat met de bevestigingsplaat te verbinden.The integrated composite model tray for a half-sided pile test for compaction load according to claim 1, wherein: - there are two force-holding blocks between the force-holding plate and the mounting plate, - the two force-holding blocks are located on the inner walls of both sides of the bucket body, and are attached to the force holding block screw holes of the model bucket body by screws, to fix the clamping plate and connect the clamping plate with the fixing plate. 5. De geïntegreerde samengestelde modelbak voor een halfzijdige paaltest voor compactiebelasting volgens conclusie 1, waarbij de twee zijden van de bevestigingsplaat met hobbels zijn uitgevoerd, die worden gebruikt om te worden geklemd in de bevestigingsplaat-klemgleuf en door schroeven bevestigd zijn in de bevestigingsplaat- schroefgaten.The integrated composite model tray for half-sided pile test for compaction load according to claim 1, wherein the two sides of the mounting plate are formed with bumps, which are used to be clamped in the mounting plate clamping slot and are screwed into the mounting plate screw holes. . 6. De geïntegreerde samengestelde modelbak voor een halfzijdige paaltest voor compactiebelasting volgens conclusie 1, waarbij de bevestigingsplaat twee ingebrachte splijtichamen omvat.The integrated composite model tray for a compaction load half face pile test of claim 1, wherein the mounting plate includes two inserted splitters. 7. De geïntegreerde samengestelde modelbak voor een halfzijdige paaltest voor compactiebelasting volgens conclusie 1, waarbij een modelpaalbevestigingspoort aan een zijde van de bodemplaat naast de bakplaat van de modelbak is gevormd, en de modelpaalbevestigingspoort buiten de plaatsingsopening voor kleine paalpoortdeeltjes is gelegen.The integrated composite model tray for a half-sided pile test for compaction load according to claim 1, wherein a model pile attachment port is formed on a side of the bottom plate adjacent to the tray plate of the model tray, and the model pile attachment port is located outside the small pile port particle placement opening. 8. De geïntegreerde samengestelde modelbak voor een halfzijdige paaltest voor compactiebelasting volgens conclusie 1, waarbij het hydraulische zuiger hefsysteem een hydraulische oliepomp, een hefboomgreep, een olietoevoerklep, een olietoevoerpijp en twee hydraulische roterende steunsamenstellen omvat, waarbij — de hefboomgreep en de olietoevoerklep op de hydraulische oliepomp zijn gevestigd, — de twee hydraulisch roterende steunsamenstellen door dezelfde hydraulische oliepomp worden bestuurd, — de olietoevoerklep door twee olietoevoerpijpen, waarbij eenzelfde heffen en dalen en roteren van de modelbak van de verticale toestand naar de horizontale staat wordt gerealiseerd.The integrated composite model bucket for a half-sided pile test for compaction load according to claim 1, wherein the hydraulic piston lifting system comprises a hydraulic oil pump, a lever handle, an oil supply valve, an oil supply pipe and two hydraulic rotary support assemblies, wherein - the lever handle and the oil supply valve are located on the hydraulic oil pump are located, — the two hydraulic rotating support assemblies are controlled by the same hydraulic oil pump, — the oil supply valve by two oil supply pipes, realizing the same lifting and lowering and rotation of the model bucket from the vertical state to the horizontal state. 9. De geïntegreerde samengestelde modelbak voor een halfzijdige paaltest voor compactiebelasting volgens conclusie 8, waarbij het hydraulische roterende steunsamenstel een tussenliggende kogellagerschijf, een hydraulische zuigerhefboom en een basissteun omvat, waarbij — de basissteun op het belastingsplatform is bevestigd en als een geheel met de hydraulische zuigerhefboom en tussenliggende kogellagerschijf is verbonden, — de basissteun met het lagere uiteinde van de hydraulische zuigerhefboom is verbonden, en — de tussenliggende kogellagerschijf met het hogere uiteinde van de hydraulische zuigerhefboom is verbonden, om in de roterende schroef van de bak te worden opgenomen om het modelbaklichaam te roteren.The integrated composite model tray for a half-sided pile test for compaction load according to claim 8, wherein the hydraulic rotating support assembly comprises an intermediate ball bearing disc, a hydraulic piston lever and a base support, wherein - the base support is mounted on the load platform and integral with the hydraulic piston lever and intermediate ball bearing disc is connected, — the base support is connected to the lower end of the hydraulic piston lever, and — the intermediate ball bearing disc is connected to the higher end of the hydraulic piston lever, to be received in the rotating screw of the bucket to make the model bucket body to rotate. 10. De geïntegreerde samengestelde modelbak voor een halfzijdige paaltest voor compactiebelasting volgens conclusie 8 waarbij de hefboomgreep tevens met een digitaal vertoningsinstrumentenpaneel is verbonden.The integrated composite model bucket for a half-sided pile test for compaction load according to claim 8 wherein the lever handle is also connected to a digital display instrument panel.
NL2032555A 2021-11-17 2022-07-20 Assembled Half-face Pile Test Compaction-Loading Integrated Model Box NL2032555B1 (en)

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