CN103575527B - A kind of shield duct piece testing machine - Google Patents
A kind of shield duct piece testing machine Download PDFInfo
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- CN103575527B CN103575527B CN201310586489.0A CN201310586489A CN103575527B CN 103575527 B CN103575527 B CN 103575527B CN 201310586489 A CN201310586489 A CN 201310586489A CN 103575527 B CN103575527 B CN 103575527B
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Abstract
The invention discloses a kind of shield duct piece testing machine, it is characterized in that: described shield duct piece testing machine is made up of self-equilibrating counter-force core tube, oil cylinder force application apparatus, axial force charger, loading beam and base; Base is positioned at bottommost; Balance counter-force core tube is positioned at the center of base; Shield duct piece ring is positioned at base edge; Loading beam vertically stands on the outside of shield duct piece ring; Oil cylinder force application apparatus two ends connect self-equilibrating counter-force core tube and loading beam respectively; Axial force charger is positioned on shield duct piece ring.The self-equilibrating counter-force core tube that the present invention adopts, simple economy, can realize again loading the imbalance of shield duct piece.The present invention adopts 12 loadings radial and axial, can realize multipoint excitation, can simulate the stress characteristic of liner structure under normal operating condition better.
Description
Technical field
The present invention relates to technical field of buildings, particularly relate to a kind of shield duct piece testing machine.
Background technology
Test method mainly model test, local test and the short form test of current domestic shield duct piece.Due to roughization of model structure and the discrete type of cast material, the size effect of local test and manyly ignore factor etc., is all difficult to the true simulation realized mechanical characteristics such as the detail characteristic of tunnel segment structure and structural bearing capacity, unstability, destructive characteristicss.
For domain pipe-plate lining structure, also some prototype tests have been carried out both at home and abroad, loading method at present for domain prototype segment liner structure can be summarized as 2 kinds: first method digs dell on ground, tunnel segment structure level is placed in hole and loads, and its counter-force provides by cheating wall.Second method is that tunnel segment structure is placed on ground, with some lifting jack radially load application carry out the actual loading situation of equivalent replacement lining cutting.
Abroad, the test about lining cutting was done more.Especially in Japan, shield technique develops rapidly and the international prostatitis of technical merit Jun Chu.In 2003, Japan carried out two round rectangular shield lining cutting 1:1 prototype test and research, and propose a kind of new shield tunnel form of fracture, this lining cutting is diplopore rectangle, and its lining cutting skin is steel structure, and inner concrete perfusion, forms a kind of lining cutting of unitized construction.Test is not respectively to loading with two kinds of lining cutting that are vertical and band column, and the former digs a dell on ground, is placed in hole by coupon level.Test specimen hoop carries out 8 loadings, and its counter-force is born by cheating wall; Test specimen is placed on ground by the latter.Similar 6 concentrated loadings of loading method.Test specimen adopts three rings to carry out staggered joint erection, considers the interaction between ring and ring.
At home, within 1999, operating technique research institute of Shanghai Tunnel Engineering stock Co., Ltd has successively carried out the model test (model by 1:3) of three through seam assemblings and three staggered joint erections to two round lining cutting, and test loads the loading scheme of employing 6 concentrated loadings.The object of test is the force and deformation feature of research two circle lining cutting under straight joint and the fissure of displacement two kinds of assembly forms.Test, by three hydraulic jack and three pull bars, realizes at 6 to drawing loading.Its charger is simple, and power transmission is reliable, but due to load(ing) point very few (only 6 concentrated loadings), also more coarse for the actual loading situation of simulation Lining Ring in soil; In addition, the stressed of Lining Ring longitudinal direction is not considered in this test; Owing to being the model test of 1:3, there are differences between the result of test and the result of actual liner structure in actual loading situation.However, this test again provides some important data, for the research carrying out double-O-tube shield tunnel further provide can be for reference foundation.
200O, Tongji University cooperates with Shanghai Tunnel Engineering Railway Transportation Design Institute to have carried out single round lining cutting 1:1 prototype test, test specimen is the different two kinds of Lining Rings (Shanghai ring and Guangzhou ring) of thickness, wherein Shanghai Underground Lining Ring external diameter 6.2m, internal diameter 5.5m, wall thickness 0.35m, ring width 1.Om, concrete grade C50; Guangzhou Underground Lining Ring external diameter 6.Om, internal diameter 5.4m, wall thickness 0.30m, ring width 1.2m, concrete grade C50.By the Experimental Comparison of two kinds of rings, the internal force of analytical calculation liner structure and distortion, the distortion of thoroughly evaluating two kinds of lining structure of metros, intensity, splitting resistance, hermetic seal characteristic, for optimizing Shanghai Underground liner structure, well designed computing method provide foundation.Current test is the prototype test of the shield lining structure 1:1 that China carries out first.Current test adopts monocycle, and the lining cutting before and after not considering, on its impact, does not consider the stressed of lining cutting longitudinal direction yet.Test with 32 hydraulic jack radially load application, carry out the actual loading of equivalent replacement lining cutting, and by bearing beam, be comparatively delivered evenly in lining cutting by added load, compare with the test of 1999, test loads with actual loading comparatively close.
Within 2007, Shanghai Tunnel Engineering stock Co., Ltd cooperates with Tongji University, to Shanghai Chongming tunnel with 44 cover lifting jack that is 44 pulling force approximate simulation evenly load is loaded, and these are divided into 4 groups to pulling force, as shown in Figure 7, no load case is simulated to adjust size, this load mode adopts multiple spot to apply comprehensive load, even if soil pressure and hydraulic pressure to be mixed applying.
Above-mentioned experimental facilities all has practical engineering project background, namely builds for solving in engineering project the practical problems produced, thus most of experimental facilities after off-test all with dismounting.In addition, the stressed of Lining Ring longitudinal direction is not considered in this test; There are differences between the result of test and the result of pipe-plate lining structure in actual loading situation.Therefore in order to verify bearing capacity and the stability of lining segment, grasp thin portion, section of jurisdiction structure truly stressed and deformation rule, with development viewpoint and long-range angle analysis, build more rationally, more perfect shield duct piece 1:1 testing equipment be necessary, be worth.
Summary of the invention
The invention provides a kind of shield duct piece testing machine of the problem solved in the test of existing shield duct piece.
The present invention adopts following technical scheme:
Shield duct piece testing machine of the present invention is made up of self-equilibrating counter-force core tube, oil cylinder force application apparatus, axial force charger, loading beam and base; The rounded bottommost being positioned at shield duct piece testing machine of base; Self-equilibrating counter-force core tube is positioned at the center of base; Shield duct piece ring is positioned at the top of base edge; Loading beam is cube structure, vertically stands on the outside of base and shield duct piece ring; Oil cylinder force application apparatus two ends connect self-equilibrating counter-force core tube and loading beam respectively; Axial force charger is positioned on shield duct piece ring; Self-equilibrating counter-force core tube and shield duct piece ring be circumferentially provided with 12 oil cylinder force application apparatus and loading beam; Shield duct piece ring between every two loading beams is provided with an axial force charger.
Self-equilibrating counter-force core tube is made up of upper cladding plate, vertical beam, upper hoop, middle hoop and lower hoop; Many vertical beams are of similar shape and size, and along the arrangement of circle spacing, surround one barrel-shaped; Upper cladding plate is the ring flat-plate of an inner hollow, and upper cladding plate is positioned at the top that many vertical beams surround drum; Upper hoop is circular, is enclosed within the top of the periphery of vertical beam; Middle hoop is circular, is enclosed within the middle part of the periphery of vertical beam; Lower hoop is circular, is enclosed within the bottom of the periphery of vertical beam; Upper cladding plate, upper hoop, middle hoop are connected with vertical beam by welding with lower hoop.
Vertical beam is ladle xoncrete structure, and self-equilibrating counter-force core tube is arranged in a combination by 30 degree of angles around axle center by 12 vertical beams, leaves gap between every two vertical beams.
Upper hoop, middle hoop and lower hoop are welded by cutting into trapezoidal joist steel.
Oil cylinder force application apparatus is made up of hydraulic jack, anchoring round steel and tension round steel; Described one end of anchoring round steel is connected with the cylinder body of hydraulic jack or piston rod, and the other end is connected on self-equilibrating counter-force core tube inwall; Described one end of tension round steel is connected with another in the cylinder body of hydraulic jack and piston rod, and the other end is connected on loading beam.
The end of anchoring round steel and tension round steel is all provided with internal thread anchor head, is provided with pad inside internal thread anchor head.
Axial force charger comprises the first backing plate, the second backing plate, pull bar and lifting jack composition; Two pull bars be arranged in parallel, it is arranged perpendicular to the first backing plate, and one end is fixedly connected with described first backing plate; Second backing plate is parallel to the first backing plate, and with through hole, two pull bars are through through hole, and the second backing plate moves along pull bar relative to the first backing plate; Lifting jack is positioned at above the second backing plate, and it applies the power towards the first backing plate direction to the second backing plate.
Axial force charger also comprises reaction plate, and reaction plate is parallel to the first backing plate, and is positioned at above lifting jack, and reaction plate is with through hole, and allow pull bar to pass, reaction plate moves along pull bar relative to the first backing plate; Pull bar has thread segment at upper end, and has screwed nut on described thread segment, and nut is positioned at the top of reaction plate.
Described shield duct piece testing machine also comprises oil cylinder locating device, and oil cylinder locating device is made up of oil cylinder bracket, slide rail and oil cylinder rotary lifting mechanism; Two one slide rails are connected on upper hoop and middle hoop or middle hoop and lower hoop by welding manner, are the sliding rails of oil cylinder bracket; Oil cylinder bracket and slide rail slide to grab by bracket and are connected, and every one slide rail have two slips grab; Oil cylinder rotary lifting mechanism is positioned at above self-equilibrating counter-force core tube, for upper Vertical lifting load cylinder.
Oil cylinder rotary lifting mechanism is made up of revolving support, motor, joist steel outrigger and electric block; Revolving support is connected with upper cladding plate; Joist steel outrigger is horizontally placed on revolving support; Motor is positioned on joist steel outrigger; Electric block is positioned on joist steel outrigger, is used for upper Vertical lifting load cylinder by driven by motor.
Self-equilibrating counter-force core tube is the subsystem of testing machine loading system, is the design basis of testing machine agent structure Zhong Ge mechanism.According to the main function of counter-force core tube: 1, provide hydraulic jack support reaction; 2, for oil piping system and hydrostatic control hardware provide placement space; 3, hydraulic jack is provided vertically to slide and locating platform.
Be fixedly connected with base bottom loading beam, and load depth of beam higher than shield duct piece, loading beam is being provided with bearing beam with shield duct piece junction, bearing beam directly contacts with shield duct piece, load(ing) point applies radial force and is delivered to tension round steel by hydraulic jack, and is delivered to shield duct piece by loading beam and bearing beam.
The effect of base system is for pipeline oil circuit layout, pipe sheet assembling provide structural support, and form the edge-restraint condition of loading system and test specimen;
The main function of bearing beam base:
1, bearing beam is supported;
2, location is provided for bearing beam is assembled;
3, reduce when testing machine applies section of jurisdiction radial force because the small force application angle deviation of lifting jack produces additional stiction bottom bearing beam that bearing beam vertical spectra causes;
Plant bottom case mainly refers to self-equilibrating counter-force core tube base, and its main function is:
1, for loading system, control system and data acquisition system (DAS) provide pipeline passway;
2, for counter-force core tube provides stability safety margin;
Good effect of the present invention is as follows:
(1) shield duct piece testing machine of the present invention have employed a set of self balancing device (self-equilibrating counter-force core tube), simple economy, can realize again loading the imbalance of shield duct piece.The conventional loading of contrast, counter force system, such as utilize counter force wall to provide counter-force.Take a lot of work during counter force wall production costs, and take test site too much, also need after off-test to remove; The load mode of ground lifting jack air exercise, the power of loading is too simple, can not realize the truly stressed simulation in section of jurisdiction, can not realize uneven loading.
(2) self-equilibrating counter-force core tube and plant bottom case system enormously simplify the layout of lifting jack oil piping system, more reasonably make use of space, decrease the floor area of testing equipment, optimize test Loading Control System, reduce equipment construction cost.
(3) loading beam of shield duct piece testing machine of the present invention can move and fix within the scope of loading beam base, can form the test capability of different-diameter, different geometrical size and different materials shield duct piece.
(4) shield duct piece testing machine of the present invention all adopts 12 loadings radial and axial, can realize multipoint excitation.Comparing drawing loading as adopted at 4 with liner structure test in the past, the stress characteristic of liner structure under normal operating condition can be simulated better.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of shield duct piece testing machine of the present invention.
Fig. 2 is the schematic diagram of the self-equilibrating counter-force core tube of shield duct piece testing machine of the present invention.
Fig. 3 is the schematic diagram of the force application apparatus of shield duct piece testing machine of the present invention.
Fig. 4 is the schematic diagram that the oil cylinder bracket of shield duct piece testing machine of the present invention is connected with slide rail.
Fig. 5 is the schematic diagram of the oil cylinder rotary lifting device of shield duct piece testing machine of the present invention.
Fig. 6 is the schematic diagram of the axial force charger of shield duct piece testing machine of the present invention.
Fig. 7 is shield duct piece loading figure under different loading.
Fig. 8 is shield duct piece deformation pattern under different loading.
Fig. 9 is shield duct piece moment curve under different loading.
Figure 10 is shield duct piece axial force diagram under different loading.
Figure 11 is shield duct piece shear diagram under different loading.
1 self-equilibrating counter-force core tube, the upper hoop of 1-1, hoop in 1-2, hoop under 1-3, 1-4 vertical beam, the upper cladding plate of 1-5, 2 oil cylinder force application apparatus, 2-1 hydraulic jack, 2-2 anchoring round steel, 2-3 tension round steel, 3 oil cylinder locating devices, 3-1 oil cylinder bracket, 3-2 slide rail, 3-3 slides and grabs, 3-4 revolving support, 3-5 motor, 3-6 joist steel outrigger, 3-7 electric block, 4 axial force chargers, 4-1 first backing plate, 4-2 second backing plate, 4-3 pull bar, 4-4 lifting jack, 4-5 reaction plate, 4-6 nut, 5 loading beams, 6 bases, 7 shield duct piece rings.
Embodiment
The following examples describe in further detail of the present invention.
As shown in Figure 1: shield duct piece testing machine of the present invention is made up of self-equilibrating counter-force core tube 1, oil cylinder force application apparatus 2, axial force charger 4, loading beam 5 and base 6; The rounded bottommost being positioned at shield duct piece testing machine of base 6; Self-equilibrating counter-force core tube 1 is positioned at the center of base 6; Shield duct piece ring 7 is positioned at the top at base 6 edge; Loading beam 5 is cube structure, vertically stands on the outside of base 6 and shield duct piece ring 7; Oil cylinder force application apparatus 2 two ends connect self-equilibrating counter-force core tube 1 and loading beam 5 respectively; Axial force charger 4 is positioned on shield duct piece ring 7; Self-equilibrating counter-force core tube 1 and shield duct piece ring 7 be circumferentially provided with 12 oil cylinder force application apparatus 2 and loading beam 5; Shield duct piece ring 7 between every two loading beams 5 is provided with an axial force charger 4.
As shown in Figure 2: self-equilibrating counter-force core tube 1 is made up of upper cladding plate 1-5, vertical beam 1-4, upper hoop 1-1, middle hoop 1-2 and lower hoop 1-3; Many vertical beam 1-4 are of similar shape and size, and along the arrangement of circle spacing, surround one barrel-shaped; Upper cladding plate 1-5 is the ring flat-plate of an inner hollow, and upper cladding plate 1-5 is positioned at the top that many vertical beam 1-4 surround drum; Upper hoop 1-1 is circular, is enclosed within the top of the periphery of vertical beam; Middle hoop 1-2 is circular, is enclosed within the middle part of the periphery of vertical beam; Lower hoop 1-3 is circular, is enclosed within the bottom of the periphery of vertical beam; Upper cladding plate 1-5, upper hoop 1-1, middle hoop 1-2 are connected with vertical beam 1-4 by welding with lower hoop 1-3.
As shown in Figure 3: oil cylinder force application apparatus 2 is made up of hydraulic jack 2-1, anchoring round steel 2-2 and tension round steel 2-3; Described one end of anchoring round steel 2-2 is connected with the cylinder body of hydraulic jack 2-1 or piston rod, and the other end is connected on self-equilibrating counter-force core tube 1 inwall; Described one end of tension round steel 2-3 is connected with another in the cylinder body of hydraulic jack 2-1 and piston rod, and the other end is connected on loading beam 5.
As shown in Figure 4 and Figure 5: oil cylinder locating device 3 is made up of oil cylinder bracket 3-1, slide rail 3-2 and oil cylinder rotary lifting mechanism; Two one slide rail 3-2 are connected on upper hoop 1-1 and middle hoop 1-2 or middle hoop 1-2 and lower hoop 1-3 by welding manner, are the sliding rails of oil cylinder bracket 3-1; Oil cylinder bracket 3-1 and slide rail 3-2 are slided by bracket and grab 3-3 and be connected, and every one slide rail 3-2 have two slips grab 3-3; Oil cylinder rotary lifting mechanism is positioned at above self-equilibrating counter-force core tube 1, for upper Vertical lifting load cylinder.
Oil cylinder rotary lifting mechanism is made up of revolving support 3-4, motor 3-5, joist steel outrigger 3-6 and electric block 3-7; Revolving support 3-4 is connected with upper cladding plate 1-5; Joist steel outrigger 3-6 is horizontally placed on revolving support 3-4; Motor 3-5 is positioned on joist steel outrigger 3-6; Electric block 3-7 is positioned on joist steel outrigger 3-6, is driven be used for upper Vertical lifting load cylinder by motor 3-5.
When carrying out shield duct piece performance test, hydraulic jack applies certain radial force to tension round steel, radial force is by tension round steel, be delivered to loading beam and bearing beam, then shield duct piece radial force is applied to, opposite side hydraulic jack is connected with self-equilibrating counter-force core tube by anchoring round steel, plays effect that is firm and counter-force.
Axial force test aspect, jack pair second pad applies downward power, gives the shield duct piece in the middle of them, and can also confine reaction plate by nut, carry out the applying adding larger axial force by the second pad and the first pad by axial force transmission.
It is continuous distribution tractions that shield duct piece is subject to suffered load in actual formation, and therefore Loading Control point more multitube sheet is stressed more stressed close to actual formation, but the cost of shield duct piece testing machine for mechanical properties is also higher, and system is also more complicated.
The present invention loads and 12 stressing influences loaded shield duct piece of the present invention so compared at traditional 4 and 8.
Fig. 7 is shield duct piece loading figure under different loading.Fig. 8 is shield duct piece deformation pattern under different loading.Fig. 9 is shield duct piece moment curve under different loading.Figure 10 is shield duct piece axial force diagram under different loading.Figure 11 is shield duct piece shear diagram under different loading.
Known by the comparative analysis of above-mentioned section of jurisdiction mechanical response, the deformation pattern of each loading scheme is substantially identical in form with axial force diagram, and and generally axle power suffered by the reality of section of jurisdiction and deformation comparison close.But the moment curve of each loading scheme and shear diagram have certain difference, see that Fig. 9 is known, suffered by 4 sections of jurisdiction when loading, suffered by moment curve form and reality, moment of flexure form is not inconsistent completely.8 load and moment curve basic simlarity suffered by section of jurisdiction in 12 loading schemes, but there is certain difference.The moment curve of 8 loading schemes is comparatively steep, and change is very fast, has cusp; And maximum hogging moment appears at the upper and lower both sides of haunch, also relatively large on the order of magnitude.12 loading scheme section of jurisdiction moment curves are comparatively mild, and maximum hogging moment appears on haunch, also comparatively close with actual conditions in number of results magnitude.Coincidence theory analysis result and actual section of jurisdiction stress deformation pattern is compared by known 12 loading schemes of the present invention of above-mentioned analysis (segment deformation and stressed).
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalents thereof.
Claims (8)
1. a shield duct piece testing machine, is characterized in that: described shield duct piece testing machine is made up of self-equilibrating counter-force core tube (1), oil cylinder force application apparatus (2), axial force charger (4), loading beam (5) and base (6); The rounded bottommost being positioned at shield duct piece testing machine of base (6); Self-equilibrating counter-force core tube (1) is positioned at the center of base (6); Shield duct piece ring (7) is positioned at the top at base (6) edge; Loading beam (5) is cube structure, vertically stands on the outside of base (6) and shield duct piece ring (7); Oil cylinder force application apparatus (2) two ends connect self-equilibrating counter-force core tube (1) and loading beam (5) respectively; Axial force charger (4) is positioned on shield duct piece ring (7); Self-equilibrating counter-force core tube (1) and shield duct piece ring (7) be circumferentially provided with 12 oil cylinder force application apparatus (2) and loading beam (5); Shield duct piece ring (7) between every two loading beams (5) is provided with an axial force charger (4);
Self-equilibrating counter-force core tube (1) is made up of upper cladding plate (1-5), vertical beam (1-4), upper hoop (1-1), middle hoop (1-2) and lower hoop (1-3); Many vertical beams (1-4) are of similar shape and size, and along the arrangement of circle spacing, surround one barrel-shaped; Upper cladding plate (1-5) is the ring flat-plate of an inner hollow, and upper cladding plate (1-5) is positioned at the top that many vertical beams (1-4) surround drum; Upper hoop (1-1), in circular, is enclosed within the top of the periphery of vertical beam; Middle hoop (1-2), in circular, is enclosed within the middle part of the periphery of vertical beam; Lower hoop (1-3), in circular, is enclosed within the bottom of the periphery of vertical beam; Upper cladding plate (1-5), upper hoop (1-1), middle hoop (1-2) are connected with vertical beam (1-4) by welding with lower hoop (1-3);
Oil cylinder force application apparatus (2) is made up of hydraulic jack (2-1), anchoring round steel (2-2) and tension round steel (2-3); One end of described anchoring round steel (2-2) is connected with the cylinder body of hydraulic jack (2-1) or piston rod, and the other end is connected on self-equilibrating counter-force core tube (1) inwall; One end of described tension round steel (2-3) is connected with another in the cylinder body of hydraulic jack (2-1) and piston rod, and the other end is connected on loading beam (5).
2. shield duct piece testing machine as claimed in claim 1, it is characterized in that: vertical beam (1-4) is ladle xoncrete structure, self-equilibrating counter-force core tube is arranged in a combination by 30 degree of angles around axle center by 12 vertical beams (1-4), leaves gap between every two vertical beams (1-4).
3. shield duct piece testing machine as claimed in claim 1, is characterized in that: upper hoop (1-1), middle hoop (1-2) and lower hoop (1-3) are welded by cutting into trapezoidal joist steel.
4. shield duct piece testing machine as claimed in claim 1, is characterized in that: anchoring round steel (2-2) is all provided with internal thread anchor head with the end of tension round steel (2-3), is provided with pad inside internal thread anchor head.
5. shield duct piece testing machine as claimed in claim 1, is characterized in that: axial force charger (4) comprises the first backing plate (4-1), the second backing plate (4-2), pull bar (4-3) and lifting jack (4-4) composition; Two pull bars be arranged in parallel (4-3), it is arranged perpendicular to the first backing plate (4-1), and one end is fixedly connected with described first backing plate (4-1); Second backing plate (4-2) is parallel to the first backing plate (4-1), and with through hole, two pull bars (4-3) are through through hole, and the second backing plate (4-2) moves along pull bar (4-3) relative to the first backing plate (4-1); Lifting jack (4-4) is positioned at the second backing plate (4-2) top, and it applies the power towards the first backing plate (4-1) direction to the second backing plate (4-2).
6. shield duct piece testing machine as claimed in claim 5, it is characterized in that: axial force charger (4) also comprises reaction plate (4-5), reaction plate (4-5) is parallel to the first backing plate (4-1), and be positioned at lifting jack (4-4) top, reaction plate (4-5) is with through hole, allow pull bar (4-3) to pass, reaction plate (4-5) moves along pull bar (4-3) relative to the first backing plate (4-1); Pull bar (4-3) has thread segment at upper end, and on described thread segment, screwed nut (4-6), and nut (4-6) is positioned at the top of reaction plate (4-5).
7. shield duct piece testing machine as claimed in claim 1, it is characterized in that: described shield duct piece testing machine also comprises oil cylinder locating device (3), oil cylinder locating device (3) is made up of oil cylinder bracket (3-1), slide rail (3-2) and oil cylinder rotary lifting mechanism; Two one slide rails (3-2) are connected on upper hoop (1-1) and middle hoop (1-2) or middle hoop (1-2) and lower hoop (1-3) by welding manner, are the sliding rails of oil cylinder bracket (3-1); Oil cylinder bracket (3-1) and slide rail (3-2) are slided by bracket and grab (3-3) and be connected, and every one slide rail (3-2) have two slips grab (3-3); Oil cylinder rotary lifting mechanism is positioned at self-equilibrating counter-force core tube (1) top, for upper Vertical lifting load cylinder.
8. shield duct piece testing machine as claimed in claim 7, is characterized in that: oil cylinder rotary lifting mechanism is made up of revolving support (3-4), motor (3-5), joist steel outrigger (3-6) and electric block (3-7); Revolving support (3-4) is connected with upper cladding plate (1-5); Joist steel outrigger (3-6) is horizontally placed on revolving support (3-4); Motor (3-5) is positioned on joist steel outrigger (3-6); Electric block (3-7) is positioned on joist steel outrigger (3-6), is driven be used for upper Vertical lifting load cylinder by motor (3-5).
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| CN115014300B (en) * | 2022-05-30 | 2024-02-06 | 邵长庚 | Engineering measurement pay-off |
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| US4629362A (en) * | 1984-06-07 | 1986-12-16 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Shield tunneling machine |
| CN103245563A (en) * | 2013-05-03 | 2013-08-14 | 上海盾构设计试验研究中心有限公司 | Sunk duct piece test platform |
| CN103256056A (en) * | 2013-05-23 | 2013-08-21 | 西南交通大学 | Model shield tunneling machine starting device capable of achieving self-balancing of counter-force |
| CN203587331U (en) * | 2013-11-21 | 2014-05-07 | 中国建筑股份有限公司 | Shield segment testing machine |
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| US4629362A (en) * | 1984-06-07 | 1986-12-16 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Shield tunneling machine |
| CN103245563A (en) * | 2013-05-03 | 2013-08-14 | 上海盾构设计试验研究中心有限公司 | Sunk duct piece test platform |
| CN103256056A (en) * | 2013-05-23 | 2013-08-21 | 西南交通大学 | Model shield tunneling machine starting device capable of achieving self-balancing of counter-force |
| CN203587331U (en) * | 2013-11-21 | 2014-05-07 | 中国建筑股份有限公司 | Shield segment testing machine |
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| 《DPLEX盾构法的开发和应用——模型试验结果及其在隧道施工中的应用》;洪代玲;《现代隧道技术》;19970831(第4期);第14－19页 * |
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|---|---|
| CN103575527A (en) | 2014-02-12 |
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