CN201297175Y - Soil pressure balancing-type shield construction process simulating tester - Google Patents
Soil pressure balancing-type shield construction process simulating tester Download PDFInfo
- Publication number
- CN201297175Y CN201297175Y CNU2008201413463U CN200820141346U CN201297175Y CN 201297175 Y CN201297175 Y CN 201297175Y CN U2008201413463 U CNU2008201413463 U CN U2008201413463U CN 200820141346 U CN200820141346 U CN 200820141346U CN 201297175 Y CN201297175 Y CN 201297175Y
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Abstract
The utility model relates to a soil pressure balancing-type shield construction process simulating tester; a model shield machine is arranged inside a rectangular soil body cavity with the upper part being opened and is filled with simulated soil body, and the axle line of the model shield machine is overlapped with the axle line of the soil body cavity; a concrete bedding layer is covered on the simulated soil body, and the upper surface of the concrete bedding layer is connected with a horizontal loading beam through two or more soil pressure jacks, and the horizontal loading beam is connected with the bottom part of the soil body cavity through an anchor rope; and a soil pressure box, a fiber grating sensor and a displacement meter are arranged inside the simulated soil body, and the soil pressure box, the fiber grating sensor and the displacement meter are electrically connected with a data collecting and processing device. The tester can conveniently and truly effectively simulate the influence of the subway interval shield channel construction on the ground layer and the periphery environment, thereby providing true and correct experiment data for the channel construction and design, and ensuring the high efficiency and safety of the urban shield tunnel construction.
Description
Technical field
The utility model relates to a kind of earth pressure balanced shield work progress simulation test device.
Background technology
The driving of the shield machine in the tunnel structure construction is the process of a dynamic change, and the many factor affecting during digging the stability of shield machine surrounding soil.The tunneling process of shield machine in the soil body simulated, and the relevant parameter of the shield machine and the soil body is tested, determine the relation of influencing each other between body in the tunneling process, the soil body and the tunnel segment structure three; Thereby be the design and construction of shield tunnel, experimental data is provided, carry out with efficient, the safety that ensure the city underground construction.
At present, some earth pressure balanced shield work progress simulation test devices can only be simulated shield machine prototype local process and tested.The test that the Japan scholar carries out aspect the earth pressure balance shield machine driving is the abundantest, wherein developed (1984) earth pressure balance shield machine simulation mole with the Japanese Waseda University research group headed by the Sen Lin professor, this device is a half section model shielding machine, form by propulsive mechanism, digging mechanism and unearthed mechanism, mainly study of the influence of digging parameter the place ahead soil body stability; The muddy water formula model shielding machine former and that the husband waits (1989) to make of trembling is used to the influence factor of the stable condition and the stratum deformation of the digging face of studying; The bivalve single-screw model shield structure that miniature shield machine device that Nomoto etc. (1999) make and Tongji University (2006) make is used to seek the adaptability problem on shield structure stratum etc.Above-mentioned these testing equipment research objects are single, just to of the test of certain a part of character as be unearthed rate, native cabin pressure etc., and other many important parameters such as cutterhead aperture opening ratio, the amount of backbreaking etc. are not studied, and more do not consider the construction technologies such as pipe sheet assembling, shield endnote slurry after shield machine advances.And after the soil body filling in its soil bin, in simulation process, the pre-buried soil pressure of its soil body is fixed; Must refill the soil body and will change soil pressure, carry out the once fixedly simulation of soil pressure in addition.But in the actual tunnel construction environment, be subjected to the influence of structure displacement around the heterotaxis and tunnel on every side, in the constructing tunnel process, the pressure and other parameters of the soil body is variable condition.Because of existing shield structure pilot system is not truly a shield machine driving simulation experiment system, the interval shield tunnel construction of the city underground of can not make things convenient for, authentic and valid topotype being drawn up is to the influence of stratum and surrounding environment, for constructing tunnel and design provide truer, experimental data accurately, thereby have a strong impact on the efficient and safety that the city shield tunnel is built.
The utility model content
The purpose of this utility model just provides a kind of earth pressure balanced shield work progress simulation test device, this experimental rig can be regulated soil pressure easily in process of the test, thereby the interval shield tunnel construction of the city underground that more convenient, more authentic and valid topotype is drawn up is to the influence of stratum and surrounding environment, for constructing tunnel and design provide truer, experimental data accurately.With the efficient and safety that ensures that the city shield tunnel is built.
The technical scheme that its practical novel purpose that realizes the utility model adopts is: a kind of earth pressure balanced shield work progress simulation test device, and it consists of:
Place model shielding machine in the rectangular soil body chamber of upper opening, and the filling simulation soil body, the axis in the axis of model shielding machine and soil body chamber is overlapping; Top covering one deck concrete cushion of the simulation soil body, the upper surface of concrete cushion links to each other with horizontal loading beam by plural soil pressure jack, and horizontal loading beam links to each other by the bottom of anchor cable with soil body chamber; Also be embedded with earth pressure cell, grating fibers sensor, displacement meter in the simulation soil body, earth pressure cell, grating fibers sensor, displacement meter all link to each other with data acquisition and treating apparatus electricity;
Specifically consisting of of model shielding machine wherein:
A, digging device dividing plate are divided into the anterior native cabin and the cabin at rear portion with cylindrical shield shell, by the cutterhead bearing cutter axis is installed in the middle of the dividing plate, the front end of cutter axis connects cutterhead, and the rear end links to each other with cutter motor on being fixed on the cabin by the travelling gear in the cabin;
The front portion of b, soil output screw rod is positioned at cutterhead rear, native cabin, and remainder passes diaphragm housing ring and is combined in the unearthed sleeve in the cabin, and the screw rod rear end links to each other with the motor shaft that goes out the earthenware motor on being fixed on the cabin; The front end of unearthed sleeve is fixed on the dividing plate, and the rear end is fixed on the cabin, and the lower rear of the sleeve that is unearthed has unearthed hole;
The postmedian in the cabin of c, propulsion plant shield shell circumferentially is evenly distributed with four jack longitudinally, and the distribution of four jack is along the vertical axis symmetry of cabin afterbody.
The operating principle and the course of work of pilot system of the present utility model are: place shield machine in the native endoceliac simulation soil body to be tunneled, outwards eject by the soil pressure jack under the loading beam, press down concrete cushion and then arrange fixed pressure, simulate the soil pressure of the reality in the true tunnel construction environment to the simulation soil body.Under the control of driving console, model shielding machine is finished following driving, is unearthed and progradation again:
Digging device: aim at the rotation of lab simulation soil at the cutterhead that cutter motor drives by the travelling gear cutter axis in the unearthed cabin, the place ahead, realize true shield machine is cut the simulation of native function.Rotating speed by regulating cutter motor and regulate parameter such as cutterhead aperture opening ratio is realized the simulation to different cutterhead types of true shield machine and parameter.Soil under the digging device is cut is deposited in the native cabin.
Soil output: go out earthenware driven by motor screw rod rotate the earth rotation will be arranged in native cabin, after be advanced into the sleeve that is unearthed, earth spills from the unearthed hole at the sleeve rear portion of being unearthed, be sent then outside the tunnel that excavates, realize simulation the unearthed function of shield machine.Can replace dissimilar, the screw rod of different inner diameters and the earthenware that goes out that sleeve is simulated dissimilar true shield machines in the test, and realize the control of the amount of being unearthed by controlling the earthenware motor speed.
Propulsion plant: before the propelling, the afterbody in the cabin adopts the pipe sheet assembling Cheng Huan of simulation tunnel, constitutes tunnel structure; On the postmedian of cabin equally distributed four longitudinally the rear end of jack withstand the tunnel structure of afterbody in the cabin, along with stretching out of hydraulic jack, the hydraulic pressure of implementation model shield machine advances.This tunnel structure is realized the supporting to the simulation country rock simultaneously in the model shielding machine progradation.When propulsion plant is pushed ahead ultimate range, the tunnel structure decylization of cabin afterbody, promptly position, the relative cabin of tunnel structure afterbody is farthest; In this decylization position, become ring to constitute a new joint tunnel structure with the pipe sheet assembling of simulation tunnel more then, carry out next time propelling and decylization again at cabin afterbody (front portion of tunnel structure).Decylization, assembly unit circulate repeatedly, make tunnel structure pursue joint and form.Behind each decylization,, form fixing tunnel structure to the outer section of jurisdiction slip casting of shield tail.
In the construction simulation process that shield machine realizes digging in the soil body, be unearthed, advance, earth pressure cell, grating fibers sensor and the displacement meter buried underground in advance in the test soil body, then respectively the relevant parameter of the soil body is tested: earth pressure cell is used for the effect soil pressure in the testing tunnel lining cutting, the grating fibers sensor is used for the strain or the stress of the test model shield machine tunneling process soil body, and displacement meter is used for the vertical displacement of formation testing.Write down the boring parameter of corresponding model shielding machine constantly simultaneously on the driving console, these parameters comprise cutterhead rotating speed, soil output rotating speed, jack thrust, native cabin pressure, grouting amount etc.Combinatory analysis to these two classes data can obtain construction parameter and heterotaxis, the reasonable coupling of the relation between shield-tunneling construction parameter such as fltting speed, native cabin pressure, the soil output etc., the related conclusions such as relation that the relation of soil pressure, grouting amount distribute to soil pressure around distortion and the lining cutting in the ground, the face of land around ground disturbance situation and the lining cutting, carry out the design and construction of shield tunnel project more according to this, thereby the highly effective and safe that guarantees constructing tunnel carries out.
Compared with prior art, the beneficial effects of the utility model are:
The pressure of the simulation soil body can be adjusted by the soil pressure jack easily, thereby real simulation goes out in the actual tunnel construction environment, changed by the soil pressure that the structure displacement is produced around the heterotaxis and tunnel on every side; And under the soil pressure of simulation, realizes earth pressure balanced shield machine digging face excavation, be unearthed, comprehensive, the comprehensive simulation of propelling, pipe sheet assembling and shield tail decylization, thereby at the indoor dynamic realistic simulation of having realized the overall process of shield machine site operation.Than existing similar pilot system, the driving of this system in simulation shield machine construction each process, be unearthed, pipe sheet assembling and shield endnote slurry be to the influence of soil body environment, and soil pressure is adjustable, thereby experimental data more comprehensively, truly, reliably, can ensure better that efficient, the safety of city underground construction is carried out.
The utility model is described in further detail below in conjunction with accompanying drawing and concrete embodiment.
Description of drawings
Fig. 1 be the utility model embodiment face structural representation (not drawing the concrete structure of shield machine).
Fig. 2 is the side-looking structure for amplifying schematic diagram of shield machine among the utility model embodiment.
The specific embodiment
Fig. 1 illustrates, a kind of specific embodiment of the present utility model is, a kind of earth pressure balanced shield work progress simulation test device, it consists of: place model shielding machine 40 in the rectangular soil body chamber 20 of upper opening, and the filling simulation soil body 25, the axis in the axis of model shielding machine 40 and soil body chamber 20 is overlapping; Top covering one deck concrete cushion 22 of the simulation soil body 25, the upper surface of concrete cushion 22 links to each other with horizontal loading beam 21 by plural soil pressure jack 23, and horizontal loading beam 21 links to each other with the bottom in soil body chamber 20 by anchor cable 24; Also be embedded with earth pressure cell 31, grating fibers sensor 32, displacement meter 33 in the simulation soil body 25; Earth pressure cell 31, grating fibers sensor 32, displacement meter 33 all link to each other with data acquisition and treating apparatus;
Fig. 2 illustrates, specifically the consisting of of model shielding machine 40 wherein:
A, digging device dividing plate 2 are divided into the anterior native cabin 7 and the cabin 8 at rear portion with cylindrical shield shell 1, by cutterhead bearing 3 cutter axis 4 is installed in the middle of the dividing plate 2, the front end of cutter axis 4 connects cutterhead 5, and the rear end links to each other with cutter motor 6 on being fixed on cabin 8 by the travelling gear 15 in the cabin 8;
The front portion of b, soil output screw rod 9 is positioned at 7 cutterheads, 5 rears, native cabin, and remainder passes dividing plate 2 and is linked in the unearthed sleeve 11 in the cabin 8, and screw rod 9 rear ends link to each other with the motor shaft that goes out earthenware motor 10 on being fixed on cabin 8; The front end of unearthed sleeve 11 is fixed on the dividing plate 2, and the rear end is fixed on the cabin 8, and the lower rear of the sleeve 11 that is unearthed has the hole 12 of being unearthed;
The postmedian in the cabin 8 of c, propulsion plant shield shell 1 circumferentially is evenly distributed with four jack 13 longitudinally, and the vertical axis symmetry of the distribution of four jack 13 8 afterbodys along the cabin.
Claims (1)
1, a kind of earth pressure balanced shield work progress simulation test device is characterized in that:
Place model shielding machine (40) in the rectangular soil body chamber (20) of upper opening, and the filling simulation soil body (25), the axis of the axis of model shielding machine (40) and soil body chamber (20) is overlapping; Top covering one deck concrete cushion (22) of the simulation soil body (25), the upper surface of concrete cushion (22) links to each other with horizontal loading beam (21) by plural soil pressure jack (23), and horizontal loading beam (21) links to each other with the bottom of soil body chamber (20) by anchor cable (24); Also be embedded with earth pressure cell (31), grating fibers sensor (32), displacement meter (33) in the simulation soil body (25); Earth pressure cell (31), grating fibers sensor (32), displacement meter (33) all link to each other with data acquisition and treating apparatus;
Specifically consisting of of described model shielding machine (40):
A, digging device dividing plate (2) are divided into the anterior native cabin (7) and the cabin (8) at rear portion with cylindrical shield shell (1), by cutterhead bearing (3) cutter axis (4) is installed in the middle of the dividing plate (2), the front end of cutter axis (4) connects cutterhead (5), and the rear end links to each other with cutter motor (6) on being fixed on cabin (8) by cabin (8) interior travelling gear (15);
The front portion of b, soil output screw rod (9) is positioned at native cabin (7) cutterhead (5) rear, remainder passes dividing plate (2) and is linked in the unearthed sleeve (11) in the cabin (8), and screw rod (9) rear end links to each other with the motor shaft that goes out earthenware motor (10) on being fixed on cabin (8); The front end of unearthed sleeve (11) is fixed on the dividing plate (2), and the rear end is fixed on the cabin (8), and the lower rear of the sleeve (11) that is unearthed has unearthed hole (12);
The postmedian in the cabin (8) of c, propulsion plant shield shell (1) circumferentially is evenly distributed with four jack (13) longitudinally, and the vertical axis symmetry of the distribution of four jack (13) (8) afterbody along the cabin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201413463U CN201297175Y (en) | 2008-11-11 | 2008-11-11 | Soil pressure balancing-type shield construction process simulating tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201413463U CN201297175Y (en) | 2008-11-11 | 2008-11-11 | Soil pressure balancing-type shield construction process simulating tester |
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| CN201297175Y true CN201297175Y (en) | 2009-08-26 |
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| CNU2008201413463U Expired - Lifetime CN201297175Y (en) | 2008-11-11 | 2008-11-11 | Soil pressure balancing-type shield construction process simulating tester |
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Cited By (26)
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|---|---|---|---|---|
| CN101403306B (en) * | 2008-11-10 | 2010-09-22 | 西南交通大学 | Soil pressure balancing type tunnel shielding simulation experiment system |
| CN102071943A (en) * | 2010-12-13 | 2011-05-25 | 上海大学 | Centrifugal experimental simulation testing device for surface subsidence induced by city shield tunnel construction |
| CN102213098A (en) * | 2010-04-09 | 2011-10-12 | 同济大学 | Test device for simulating local special loads of tunnel and underground engineering |
| CN102467836A (en) * | 2010-11-19 | 2012-05-23 | 上海市机械施工有限公司 | Earth pressure balance shield tunneling machine teaching system |
| CN102562092A (en) * | 2012-01-31 | 2012-07-11 | 西南交通大学 | Testing container for tunnel lining model |
| CN102587932A (en) * | 2012-02-02 | 2012-07-18 | 西南交通大学 | Loading frame for tunnel lining model test |
| CN102607942A (en) * | 2012-04-01 | 2012-07-25 | 中交上海三航科学研究院有限公司 | Waterproof structure of multi-layer mobile loading beam |
| CN102620992A (en) * | 2012-04-01 | 2012-08-01 | 中交上海三航科学研究院有限公司 | Loading system and method for simulating soil pressure in test room |
| CN102915666A (en) * | 2012-11-06 | 2013-02-06 | 浙江大学 | Active and passive instability teaching demonstrator of shield excavation face |
| CN103035163A (en) * | 2013-01-11 | 2013-04-10 | 中铁第四勘察设计院集团有限公司 | Supporting and reverse propelling device of shield testing machine |
| CN103277110A (en) * | 2013-05-13 | 2013-09-04 | 中铁十四局集团有限公司 | Construction method of overlapped shield tunnel |
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| CN103745648A (en) * | 2013-12-30 | 2014-04-23 | 上海市机械施工集团有限公司 | Double-model simulation equipment and method for shield tunneling machine |
| CN104634646A (en) * | 2015-01-13 | 2015-05-20 | 哈尔滨工业大学 | Testing method for simulating mechanical behaviors of surrounding underground pipelines in construction of shield tunnel |
| CN104929162A (en) * | 2015-06-15 | 2015-09-23 | 上海交通大学 | Outer side wall earth pressure cell hydraulic type burying device and method |
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2008
- 2008-11-11 CN CNU2008201413463U patent/CN201297175Y/en not_active Expired - Lifetime
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| CN102213098A (en) * | 2010-04-09 | 2011-10-12 | 同济大学 | Test device for simulating local special loads of tunnel and underground engineering |
| CN102467836A (en) * | 2010-11-19 | 2012-05-23 | 上海市机械施工有限公司 | Earth pressure balance shield tunneling machine teaching system |
| 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 |
| CN102071943A (en) * | 2010-12-13 | 2011-05-25 | 上海大学 | Centrifugal experimental simulation testing device for surface subsidence induced by city shield tunnel construction |
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| CN102562092B (en) * | 2012-01-31 | 2013-11-20 | 西南交通大学 | Testing container for tunnel lining model |
| CN102587932A (en) * | 2012-02-02 | 2012-07-18 | 西南交通大学 | Loading frame for tunnel lining model test |
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| CN103277110A (en) * | 2013-05-13 | 2013-09-04 | 中铁十四局集团有限公司 | Construction method of overlapped shield tunnel |
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| CN108709977A (en) * | 2018-07-19 | 2018-10-26 | 浙江大学城市学院 | A kind of ground preloading influences the indoor model test device and test method of existing subway tunnel |
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Granted publication date: 20090826 Effective date of abandoning: 20081111 |