CN101793616B - Movable type hydraulic loading device for shield simulation test bed - Google Patents
Movable type hydraulic loading device for shield simulation test bed Download PDFInfo
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Abstract
The invention discloses a movable type hydraulic loading device for a shield simulation test bed. The movable type hydraulic loading device is arranged on walls at both sides of a soil box of the shield simulation test bed and comprises a steel beam part, a pressurizing part, a lifting and translating part, quioning and fixing parts and a hydraulic system, wherein the steel beam part is used as a beam type steel structural part and laid on the side walls; the pressurizing part is arranged on the lower part of the steel beam part and comprises a plurality of loading units, and the loading units are driven by the hydraulic system to downwards squeeze soil in the soil box; the lifting and translating part is arranged on the periphery of the steel beam part and comprises a plurality of hydraulic jacking posts, and the hydraulic jacking posts are driven by the hydraulic system, can lift the steel beam part and ensures that the steel beam part translates; and the quioning and fixing parts are fixed on four corners on the upper surface of the steel beam part and fix the steel beam part by adopting a quioning mode. The invention has the characteristics of large simulation range of pressure to the soil, real simulation effect, firmness, reliability and convenient soil filling and can be applied to large-size shield tunneling simulation test beds.
Description
Technical field:
The present invention relates to be used for the simulation test device of Tunnel Engineering, be specifically related to a kind of movable type hydraulic loading device for shield simulation test bed, belong to the Tunnel Engineering technical field.
Background technology:
Studying the characteristic of shield excavation machine when the underground construction tunnel by the method for simulation test is a kind of science, effective method.Some enterprises, scientific research institution all set up relevant laboratory with university and carry out this specific engineering test with the corresponding simulator stand of design-build both at home and abroad, have just developed large shield tunnelling analogue test platform to carry out the shield-tunneling construction test as Shanghai Tunnel Engineering stock Co., Ltd.The simulation test of shield-tunneling construction is exactly to apply certain pressure by certain mode to the soil body around the simulation shield excavation machine in the analogue test platform, make the test soil body fully simulate actual soil layer in the shield excavation machine work progress, thereby the research shield excavation machine is at different geologic conditions, characteristic, the characteristic of shield excavation machine and the interaction relationship between the machine soil of soil body when different construction depth is constructed.
In shield simulation test, the actual soil layer that the test soil in the simulator stand is fully simulated in the shield excavation machine work progress is vital.Chinese patent ZL200420110890.3 discloses a kind of simulator stand capsule bag loading system, and it is used for the soil body in the simulator stand soil case is loaded.This capsule bag loading system is transported to clear water in the capsule bag through pressure regulation circuit by water pump, this pressure regulation circuit has five, every loop sets gradually reduction valve, non-return valve and butterfly valve and pressure can manually be set separately, the capsule bag that single Zhi Huilu is communicated with is arranged on the same circular cross section of native case, and is provided with pressure transducer the soil pressure that is produced is detected.This capsule bag loading system on-load pressure is 0.4MPa to the maximum, and the soil depth of its maximum analog is 22m.
Described existing capsule bag loading system has in test following defective:
1, capsule bag loading system has certain difference to the simulation and the actual conditions of soil pressure---and the capsule bag in the background patents in the capsule bag loading system is along the circumference of simulating shield machine, and can only five different pressures be set by manual adjustments, in addition, capsule bag loading system on-load pressure is less, can only produce the soil pressure of 0.4Mpa, therefore existing capsule bag loading system can't fully be simulated the stress of the dissimilar stratum different depth soil body, and the prone pressure in the face of land that especially can't dummy level changes and sedimentation.
2, load that damage takes place the capsule bag easily and the influence test---the capsule bag in the capsule bag loading system is a flexible member, it must install fill the soil body in native case before, thereby in the process of banketing, very easily be damaged, especially the position that is connected with the water route is easy to fracture, thereby causes the interruption tested.
Summary of the invention:
Technical matters to be solved by this invention is, overcome the defective of prior art, a kind of movable type hydraulic loading device for shield simulation test bed is provided, it can simulate the earth stress state on polytype stratum fully truly, especially can the dummy level face of land prone pressure change and the situation of sedimentation, avoid the damage of loading system in the process of the test simultaneously, reduce influence test.
The technical solution adopted for the present invention to solve the technical problems is as follows:
A kind of movable type hydraulic loading device for shield simulation test bed, be arranged at the top of shield simulation test bed native case, this soil case includes side wall, the top of this side wall is provided with the sealing frame, guide rail and side wall girder steel, described hydraulic loading device comprises the girder steel parts, pressure-producing part, the elevating translational parts, wedging fixed part and hydraulic system, described girder steel parts are the cross beam type steel construction piece, be held on the described sealing frame, described pressure-producing part is positioned at the bottom of these girder steel parts, include some loading units, this loading unit is pushed the soil body in the described native case downwards by the driving of described hydraulic system, described elevating translational parts are positioned at the periphery of girder steel parts, include some hydraulic lifting posts, this hydraulic lifting post is subjected to the driving of described hydraulic system can lifting to play the girder steel parts and make it along described guide rail translation, described wedging fixed part is fixed in the Si Jiaochu of girder steel parts upper surface, adopts with the mode of described side wall girder steel wedging the girder steel position component is fixed.
It is 0.6MPa that movable type hydraulic loading device for shield simulation test bed of the present invention can produce maximum soil pressure; Described girder steel parts are by back timber, the plurality of fixed bucket, following shrouding and side seal board constitute, described back timber is a plate-shaped frame formula member, flatly place this girder steel upper parts of components, described plurality of fixed bucket is a cylindrical structural member, it is axially vertical with described back timber and be parallel to each other, should fixing bucket distribute equably and the upper end solid welding below this back timber, described down shrouding is one to be provided with the steel plate of some positions and size and the corresponding circular hole of described plurality of fixed bucket, it is welded in the lower end of this fixing bucket, described side seal board is located in the periphery of these girder steel parts, the following solid welding of this side seal board upper end and this back timber, the peripheral solid welding of lower end and this time shrouding; Described pressure-producing part includes 14 loading units, each loading unit comprises that one loads a post bucket and a loading hydraulic cylinder, this loading post bucket is the round barrel shape member of upper end open, it is placed in the described fixing bucket coaxially, be provided with O-ring seal between described loading post bucket and the described fixing bucket, this loading hydraulic cylinder stretches into this loading post barrel cavity by described opening, fixedlyed connected with the following of described back timber in the loading hydraulic cylinder upper end, fixedly connected with the bottom of this loading post bucket lower end in the lower end, this loading hydraulic cylinder is connected with described hydraulic system and the driving that is subjected to and to promote to load the post bucket flexible up and down in described fixing bucket; Described elevating translational parts include 4 hydraulic lifting posts, each hydraulic lifting post comprises an orienting sleeve, a jacking hydraulic cylinder and a roller, this orienting sleeve erectly is connected and fixed on the side of described back timber, this jacking hydraulic cylinder places in the orienting sleeve and fixedly connected with orienting sleeve top in its upper end, the axial stretching of described jacking hydraulic cylinder is guided by this orienting sleeve, this roller shaft is located at the lower end of jacking hydraulic cylinder, and this jacking hydraulic cylinder is connected with described hydraulic system and the driving that is subjected to and promote to stretch under the described roller on the guide rail that drops down onto described native case side wall top; Described wedging fixed part comprises 4 groups of assemblies that are made of back seat, screw rod and voussoir, each assembly is located on the angle of described back timber upper surface, this back seat solid welding is at this above back timber, this voussoir is arranged at this screw front end, this spiro rod rear end is bolted on the back seat by square thread, and rotary screw can promote voussoir and the wedging of described side wall girder steel and fixing described girder steel parts.
Shield simulation test bedly compare with charger with existing, the present invention has obtained following beneficial technical effects:
1, existing shield simulation test bedly form by the capsule bag of flexibility with capsule bag loading system, and shield simulation test bed native case to banket be before the capsule bag is installed the back water-filling, therefore very easily in the process of banketing, be damaged, and movable type hydraulic loading device for shield simulation test bed of the present invention is a steel design, it is the hydraulic system of rigidity, its loading to the soil body is again after native case bankets, therefore the possibility that is damaged exists hardly, so the present invention has avoided the charger inefficacy to cause the interruption of testing and test is impacted.
2, movable type hydraulic loading device for shield simulation test bed of the present invention is arranged at the top of simulation shield excavation machine, wherein be provided with a plurality of loading post buckets that are in same surface level, these load the post bucket can also regulate the pressure size respectively, thereby by regulating the pressure that respectively loads on the post bucket, the present invention not only can realize the simulation to the various earth stress clocklike of different soil state, and can also realize the soil pressure state on the stratum, the face of land of simulation shield excavation machine upper horizontal and the simulation of land subsidence situation.In addition, because the load capability of fluid pressure type loading system is much higher than capsule bag loading system, maximum reaches 0.6MPa, so the present invention has also enlarged the scope of soil pressure simulation.
3, the movable type hydraulic loading device for shield simulation test bed of the present invention elevating translational parts that can have by itself realize that voluntarily lifting moving and wedging fix, therefore made things convenient for and removed charger by native upper box part and in native case, load and test the soil body, and needn't call large lifting equipment.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a structure upward view of the present invention.
Fig. 3 is a structure vertical view of the present invention.
Fig. 4 is the synoptic diagram of installing and using of the present invention.
Fig. 5 is a hydraulic control system schematic diagram of the present invention.
Embodiment:
Below in conjunction with specific embodiments and the drawings the present invention is described in further detail.
At first see also Fig. 4 synoptic diagram of installing and using of the present invention, the diagram movable type hydraulic loading device for shield simulation test bed is arranged at the top of shield simulation test bed native case, include into the portal wall around this soil case, go out portal wall and both walls 80, this advances the portal wall and goes out the forward and backward side that the portal wall lays respectively at native case, and this side wall 80 is positioned at the both sides of native case.The step at these side wall 80 tops is provided with sealing frame 83, has been arranged side by side guide rail 82 with it, respectively is provided with a guide rail 82 and two guide rail 82 keeping parallelisms on the both walls 80.Top at side wall 80 is provided with side wall girder steel 81, and this side wall girder steel 81 is the strip steel construction piece, respectively is provided with one on the both walls 80.Movable type hydraulic loading device for shield simulation test bed of the present invention is placed on the both walls 80 as an integrated stand, form a native case space of loading the test soil body with the four sides body of wall, this movable type hydraulic loading device for shield simulation test bed is exerted pressure to the test soil body in the native case downwards by the mode of hydraulic pressure, with the soil pressure state and the land subsidence situation on the stratum above the simulation shield excavation machine.
See also Fig. 1 structural representation of the present invention again, the diagram movable type hydraulic loading device for shield simulation test bed comprises girder steel parts, pressure-producing part, elevating translational parts, wedging fixed part and hydraulic system.
Described girder steel parts are the cross beam type steel construction piece, and it adopts steel plate to be welded, and these girder steel parts are held on (see figure 4) on the sealing frame 83 at described native case side wall 80 tops.Described girder steel parts are made of back timber 10, plurality of fixed bucket 20, following shrouding 50 and side seal board 51.Described back timber 10 is the stressed foundation structure part of a plate-shaped frame formula, and it is welded by steel plate, and this back timber 10 flatly is arranged at described girder steel upper parts of components.Described plurality of fixed bucket 20 is cylindric steel member, and its upper end solid welding is below described back timber 10 and axially vertical with the lower plane of this back timber 10, and described fixing bucket 20 is evenly distributed under the back timber 10, and each axis of fixing barrel 20 is parallel to each other.Described shrouding 50 down is a plain plate, offer some circular holes above, the position of the position of this circular hole and diameter dimension size and 20 distributions of described plurality of fixed bucket and outside dimension size are corresponding so that be involutory with the lower end of fixing bucket 20, and this time shrouding 50 is welded in the edge of these fixing barrel 20 lower ends along the periphery of each circular hole.Described side seal board 51 is located in periphery, the following solid welding of these side seal board 51 upper ends and described back timber 10, lower end and the described peripheral solid welding of shrouding 50 down of these girder steel parts with steel plate.Thereby described shrouding 50 down and side seal board 51 are linked to be holistic girder steel parts to bear the reacting force of the soil body with described back timber 10,20 solid weldings of plurality of fixed bucket.The girder steel parts are by shrouding 50 and sealing frame 83 are fitted and placed on the described sealing frame 83 down.
Described pressure-producing part is positioned at the bottom of these girder steel parts, and this pressure-producing part includes some loading units, and this loading unit is pushed the test soil body in the described native case downwards by the driving of described hydraulic system.See also Fig. 2, pressure-producing part described in the present embodiment includes 14 loading units, loading unit is arranged within the fixing bucket 20 of girder steel parts, and each loading unit comprises that one loads a post bucket 40 and a loading hydraulic cylinder 30, and all around spacing is 1m between each loading unit.This loads post bucket 40 is the round barrel shape member, its upper end has opening 41 (see figure 1)s, described loading post bucket 40 is placed in the inner chamber of described fixing bucket 20 coaxially, bottom between the bucket wall of this loading post bucket 40 and fixing bucket 20 is provided with O-ring seal 23, enters in the fixing bucket 20 to avoid the testing soil body.Described loading hydraulic cylinder 30 stretches into by described opening 41 in the inner chamber of this loading post bucket 40, fixedlys connected with the following of described back timber 10 with bolt in the upper end of this loading hydraulic cylinder 30, fixedlys connected with the bottom of these loading post bucket 40 lower ends with bolt in the lower end; This loading hydraulic cylinder 30 is connected and is subjected to the driving of this hydraulic system with described hydraulic system, thereby it is flexible up and down in described fixing bucket 20 to promote to load post bucket 40, and then directly pressurizes to the test soil body in the bottom of loading post bucket 40.The maximum soil pressure that movable type hydraulic loading device for shield simulation test bed of the present invention can produce is 0.6MPa.
See also Fig. 1, described elevating translational parts are positioned at the periphery of girder steel parts, these elevating translational parts include some hydraulic lifting posts, this hydraulic lifting post is subjected to the driving of described hydraulic system lifting to play the girder steel parts, and make this girder steel parts, and then whole hydraulic loading device, along guide rail 82 translations on the described both walls 80.In the present embodiment, described elevating translational parts include 4 hydraulic lifting posts, are installed in the Si Jiaochu of described back timber 10, and each hydraulic lifting post comprises an orienting sleeve 62, a jacking hydraulic cylinder 61 and a roller 60.Described orienting sleeve 62 is a cylindrical member, and it erectly is connected and fixed on the side of the side seal board 51 of described back timber 10 by bolt.Described jacking hydraulic cylinder 61 is placed in the inner chamber of this orienting sleeve 62 coaxially, and the top of the upper end of this jacking hydraulic cylinder 61 and this orienting sleeve 62 is bolted to connection together, the movable cylinder bar of described jacking hydraulic cylinder 61 can axially stretch out under this orienting sleeve 62, the bottom of this orienting sleeve 62 is provided with the pilot hole that matches with jacking hydraulic cylinder 61 movable cylinder bars, thereby makes the flexible guiding that is subjected to these orienting sleeve 62 pilot holes of jacking hydraulic cylinder 61 movable cylinder bars.Described roller 60 is located in the lower end of this jacking hydraulic cylinder 61, this roller 60 can land on the guide rail 82 at described side wall 80 tops.Described jacking hydraulic cylinder 61 is connected with described hydraulic system, and can hard to bear this hydraulic system driving stretch out downwards, thereby promoting described roller stretches for 60 times on the guide rail 82 that drops down onto described native case both walls 80 tops, simultaneously whole hydraulic loading device lifting is got up, subsequently along 82 translations of two closed slides.
Please in conjunction with consulting Fig. 1 and Fig. 3, described wedging fixed part is fixed in the Si Jiaochu of girder steel parts upper surface, and this wedging fixed part adopts with the mode of described side wall girder steel 81 wedgings the girder steel position component is fixed.Described wedging fixed part comprises 4 groups of assemblies, and each assembly is located on the angle of described back timber 10 upper surfaces, and this assembly is made of back seat 72, screw rod 71 and voussoir 70.Described back seat 72 solid weldings are at the upper surface of this back timber 10, and the voussoir 70 with an inclined-plane is arranged at the front end of this screw rod 71, and the rear end of this screw rod 71 is bolted on the described back seat 72 by square thread.See also Fig. 4 again, rotary screw 71 just can promote voussoir 70 and move in the horizontal direction, and makes the following wedging of the inclined-plane and the described side wall girder steel 81 of this voussoir 70, thereby secures the above the girder steel parts, also just fixes whole hydraulic loading device.In the present embodiment, described voussoir 70 is a hinge formula voussoir, and it comprises a ball pivot, and voussoir 70 fits tightly by this ball pivot realization and described side wall girder steel 81.
See also Fig. 5 hydraulic control system schematic diagram of the present invention, described hydraulic system is carried out hydrostatic control to whole hydraulic loading device of the present invention.This hydraulic system mainly comprises: fuel tank 91, motor 92, hydraulic pump 93, solenoid directional control valve 94, surplus valve 95, proportional pressure control valve 96, three position four-way directional control valve 97,2/2-way reversal valve 99 and hydraulic pressure transducer 98.The driving that described loading hydraulic cylinder 30 and jacking hydraulic cylinder 61 and this hydraulic system are connected and are subjected to.Fuel tank 91 stores hydraulic oil, gas in the separable fluid and precipitation dirt, hydraulic pump 93 provides power by motor 92, sucking-off and discharge high-pressure and hydraulic oil from fuel tank 91, this hydraulic oil is by solenoid directional control valve 94 and surplus valve 95 load or unloads, earlier through the oil pressure in the proportional pressure control valve 96 continuous regulator solution pressing systems, switch through 97 pairs of each hydraulic circuits of three position four-way directional control valve again, after be connected the break-make that 2/2-way reversal valve 99 on the loading hydraulic cylinder 30 big loculus loops is realized hydraulic circuits, thereby control loaded hydraulic cylinder 30 is flexible, to exert pressure by loading 40 pairs of soil bodys of post bucket, 2/2-way reversal valve 99 is also controlled the flexible of jacking hydraulic cylinder 61 simultaneously, to realize lifting to whole hydraulic loading device, hydraulic pressure transducer 98 is connected with loading hydraulic cylinder 30 big chambeies, can measure the on-load pressure of loading hydraulic cylinder 30.
The course of work of movable type hydraulic loading device for shield simulation test bed of the present invention is summarized as follows:
See also Fig. 4, before the shield tunnelling analogue test, the jacking hydraulic cylinder 61 that elder generation's primer fluid pressing system drives hydraulic loading device of the present invention stretches out, roller 60 is pressed against on the guide rail 82, the following shrouding 50 and the sealing frame on the side wall 80 83 of girder steel parts are broken away from, thereby the whole lifting of hydraulic loading device is got up, and hydraulic loading device is removed in the rolling on guide rail 82 by roller 60 then; Dose test soil afterwards from the shield simulation test bed native case of last direction, the soil body is returned hydraulic loading device after filling and finishing again along guide rail 82 translations; Hydraulic system drives 61 withdrawals of jacking hydraulic cylinder subsequently, drives roller 60 withdrawal getaways 82 simultaneously, thereby the girder steel parts are fallen gradually, descends shrouding 50 and sealing frame 83 to fit tightly at last, thereby native case is sealed; The screw rod 71 of wedging fixed part on four jiaos of the turn girder steel parts one by one again behind the hydraulic loading device location promotes voussoir 70 wedgings between back timber 10 and side wall girder steel 81, thereby with the hydraulic loading device overall fixed.
After the described hydraulic loading device positioning and fixing, can begin to carry out shield tunnelling analogue test, the primer fluid pressing system drives the loading hydraulic cylinder 30 downward loading post buckets 40 that also drive and stretches out (seeing shown in Fig. 4 dotted line), the soil body is pushed, the soil body is compressed and the internal pressure rising, thus the soil pressure around the simulation shield structure.By changing and set the different pressures of hydraulic oil in each loading hydraulic cylinder 30, can realize simulation to the earth stress rule state of the various situations of different soil, simultaneously, because movable type hydraulic loading device for shield simulation test bed of the present invention is arranged at the top of shield simulation test bed native case, and on the surface level to below the soil body exert pressure, therefore can also realize the soil pressure state on the stratum, the face of land of simulation shield excavation machine upper horizontal and the simulation of land subsidence situation by the sensor that is provided with, make this hydraulic loading device improve vivid effect greatly actual soil layer simulation.In addition, because the load capability of fluid pressure type loading system is much higher than capsule bag loading system, the maximum soil pressure that hydraulic loading device of the present invention can produce can reach 0.6MPa, thereby has enlarged the present invention and simulate the scope of soil pressure.
In a word, movable type hydraulic loading device for shield simulation test bed of the present invention has true, the firm reliable and advantage easily of banketing of scope effect big, simulation to the soil pressure simulation, can be used in the large shield tunnelling analogue test platform.
Claims (6)
1. movable type hydraulic loading device for shield simulation test bed, be arranged at the top of shield simulation test bed native case, this soil case includes both walls, the top of this side wall is provided with the sealing frame, guide rail and side wall girder steel, described hydraulic loading device comprises the girder steel parts, pressure-producing part, the elevating translational parts, wedging fixed part and hydraulic system, described girder steel parts are the cross beam type steel construction piece, be held on the described sealing frame, described pressure-producing part is positioned at the bottom of these girder steel parts, include some loading units, this loading unit is pushed the soil body in the described native case downwards by the driving of described hydraulic system, described elevating translational parts are positioned at the periphery of girder steel parts, include some hydraulic lifting posts, this hydraulic lifting post is subjected to the driving of described hydraulic system can lifting to play the girder steel parts and make it along described guide rail translation, described wedging fixed part is fixed in the Si Jiaochu of girder steel parts upper surface, adopts with the mode of described side wall girder steel wedging the girder steel position component is fixed; It is characterized in that:
Described girder steel parts are by back timber, the plurality of fixed bucket, following shrouding and side seal board constitute, described back timber is a plate-shaped frame formula member, flatly place this girder steel upper parts of components, described plurality of fixed bucket is a cylindrical structural member, it is axially vertical with described back timber and be parallel to each other, should fixing bucket distribute equably and the upper end solid welding below this back timber, described down shrouding is one to be provided with the steel plate of some positions and size and the corresponding circular hole of described plurality of fixed bucket, it is welded in the lower end of this fixing bucket, described side seal board is located in the periphery of these girder steel parts, the following solid welding of this side seal board upper end and this back timber, the peripheral solid welding of lower end and this time shrouding;
Each loading unit of described pressure-producing part comprises that one loads a post bucket and a loading hydraulic cylinder, this loading post bucket is the round barrel shape member of upper end open, it is placed in the described fixing bucket coaxially, this loading hydraulic cylinder stretches into this loading post barrel cavity by described opening, fixedlyed connected with the following of described back timber in the loading hydraulic cylinder upper end, fixedly connected with the bottom of this loading post bucket lower end in the lower end, this loading hydraulic cylinder is connected with described hydraulic system and the driving that is subjected to and to promote to load the post bucket flexible up and down in described fixing bucket;
Each hydraulic lifting post of described elevating translational parts comprises an orienting sleeve, a jacking hydraulic cylinder and a roller, this orienting sleeve erectly is connected and fixed on the side of the side seal board of described back timber, this jacking hydraulic cylinder places in the orienting sleeve and fixedly connected with orienting sleeve top in its upper end, the axial stretching of described jacking hydraulic cylinder is guided by this orienting sleeve, this roller shaft is located at the lower end of jacking hydraulic cylinder, and this jacking hydraulic cylinder is connected with described hydraulic system and the driving that is subjected to and promote to stretch under the described roller on the guide rail that drops down onto described native case side wall top;
Described wedging fixed part comprises 4 groups of assemblies that are made of back seat, screw rod and voussoir, each assembly is located on the angle of described back timber upper surface, this back seat solid welding is at this above back timber, this voussoir is arranged at this screw front end, this spiro rod rear end is bolted on the back seat, and rotary screw can promote voussoir and the wedging of described side wall girder steel and fixing described girder steel parts.
2. movable type hydraulic loading device for shield simulation test bed as claimed in claim 1 is characterized in that: be provided with O-ring seal between described loading post bucket and the described fixing bucket.
3. movable type hydraulic loading device for shield simulation test bed as claimed in claim 1 or 2 is characterized in that: described screw rod is spirally connected by square thread and described back seat.
4. movable type hydraulic loading device for shield simulation test bed as claimed in claim 1 or 2 is characterized in that: described pressure-producing part includes 14 loading units.
5. movable type hydraulic loading device for shield simulation test bed as claimed in claim 1 or 2 is characterized in that: described elevating translational parts include 4 hydraulic lifting posts.
6. movable type hydraulic loading device for shield simulation test bed as claimed in claim 1 or 2 is characterized in that: it is 0.6MPa that described hydraulic loading device can produce maximum soil pressure.
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| CN2010101063974A CN101793616B (en) | 2010-02-05 | 2010-02-05 | Movable type hydraulic loading device for shield simulation test bed |
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| CN2010101063974A CN101793616B (en) | 2010-02-05 | 2010-02-05 | Movable type hydraulic loading device for shield simulation test bed |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071943B (en) * | 2010-12-13 | 2012-11-07 | 上海大学 | Centrifugal experimental simulation testing device for surface subsidence induced by city shield tunnel construction |
| CN102568293B (en) * | 2010-12-14 | 2014-03-12 | 上海市机械施工集团有限公司 | Rectangular tunnel boring machine teaching system |
| CN103256056B (en) * | 2013-05-23 | 2015-04-08 | 西南交通大学 | Model shield tunneling machine starting device capable of achieving self-balancing of counter-force |
| CN105841986B (en) * | 2016-03-28 | 2018-02-23 | 中南大学 | Counter-force transfer device and its application method are originated for indoor shield model test |
| KR20190106233A (en) * | 2018-03-08 | 2019-09-18 | 조주현 | Hydraulic System for Slide Adjustment of Forging Press |
| CN110186625A (en) * | 2019-06-21 | 2019-08-30 | 中铁工程服务有限公司 | Center steering body medium channel sealing property detection device |
| CN113622928B (en) * | 2021-08-17 | 2024-04-26 | 盾构及掘进技术国家重点实验室 | Automatic stepping walking device for narrow space of tunnel arc-shaped piece and control method |
| CN114062124B (en) * | 2021-10-25 | 2023-12-08 | 长沙理工大学 | Distributed soil pressure measuring instrument suitable for laboratory under low-stress condition |
| CN115326332A (en) * | 2022-08-16 | 2022-11-11 | 东北大学 | Anchor clamps suitable for cantilever type vibration test piece |
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