CN203587331U - Shield segment testing machine - Google Patents

Shield segment testing machine Download PDF

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Publication number
CN203587331U
CN203587331U CN201320736386.3U CN201320736386U CN203587331U CN 203587331 U CN203587331 U CN 203587331U CN 201320736386 U CN201320736386 U CN 201320736386U CN 203587331 U CN203587331 U CN 203587331U
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CN
China
Prior art keywords
duct piece
hoop
shield duct
testing machine
loading
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CN201320736386.3U
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Chinese (zh)
Inventor
马程昊
白晨光
马庆松
秦会来
油新华
耿冬青
宋福渊
许国光
张清林
杨春英
张伟
郭恒
胡贺祥
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中国建筑股份有限公司
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Priority to CN201320736386.3U priority Critical patent/CN203587331U/en
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Publication of CN203587331U publication Critical patent/CN203587331U/en

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Abstract

The utility model discloses a shield segment testing machine. The shield segment testing machine is composed of a self-balancing counter force core tube, a cylinder force applying device, an axial force loading device, a loading beam and a base, wherein the base is located at the bottom part; the self-balancing counter force core tube is located at the center of the base; a shield segment ring is located at the edge of the base; the loading beam is vertically arranged at the outer side of the shield segment ring; two ends of the cylinder force applying device are connected to the self-balancing counter force core tube and the loading beam respectively; and the axial force loading device is located on the shield segment ring. The shield segment testing machine disclosed by the utility model adopts the self-balancing counter force core tube, is simple and economic, and can realize imbalance loading for the shield segment. The shield segment testing machine adopts 12-point loading in the radial direction and the axial direction, can realize multi-point loading, and can better simulates mechanical characteristics of a lining structure under a normal operating state.

Description

A kind of shield duct piece testing machine
Technical field
The utility model relates to technical field of buildings, relates in particular to a kind of shield duct piece testing machine.
Background technology
The test method of current domestic shield duct piece is mainly model test, local test and short form test.Due to roughization of model structure and the discrete type of cast material, the size effect of local test and many factors etc. of ignoring, be all difficult to truly realize the simulation of the mechanical characteristics such as detail characteristic to tunnel segment structure and structural bearing capacity, unstability, destructive characteristics.
For domain pipe-plate lining structure, also some prototype tests have been carried out both at home and abroad, at present for the loading method of domain prototype pipe-plate lining structure, can be summarized as 2 kinds: first method is to dig dell on ground, and tunnel segment structure level is placed in hole and is loaded, and its counter-force provides by cheating wall.Second method is that tunnel segment structure is placed on to ground, with some lifting jack radially load application carry out the actual loading situation of equivalent substitute lining cutting.
Abroad, about the test of lining cutting, did more.Especially in Japan, the technical development of shield structure rapidly and prostatitis, the technical merit Jun Chu world.In 2003, Japan carried out two round rectangular shield lining cutting 1:1 prototype test and research, has proposed a kind of new shield tunnel form of fracture, and 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 vertical and load with two kinds of lining cutting of column, and the former digs a dell on ground, test specimen level is placed in hole.Test specimen hoop carries out 8 loadings, and its counter-force is born by cheating wall; The latter is placed on ground by test specimen.Similar 6 concentrated loadings of loading method.Test specimen adopts three rings to carry out staggered joint erection, has considered the interaction between ring and ring.
At home, operating technique research institutes of Shanghai Tunnel Engineering stock Co., Ltd in 1999 have successively carried out the model test (by the model of 1:3) of three through seam assemblings and three staggered joint erections to two round lining cutting, test loads the loading scheme that adopts 6 concentrated loadings.The object of test is the force and deformation feature of the two circle of research lining cutting under straight joint and two kinds of assembly forms of the fissure of displacement.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), the actual loading situation for simulation Lining Ring in soil is also more coarse; In addition, longitudinal stressed of Lining Ring do not considered in this test; Owing to being the model test of 1:3, between the result of test and the result of actual liner structure in actual loading situation, there are differences.However, this test has also been to provide some important data, for further carrying out the research of double-O-tube shield tunnel, provides foundation that can be for reference.
2000, Tongji University cooperates to have carried out single round lining cutting 1:1 prototype test with Shanghai Tunnel Engineering Railway Transportation Design Institute, test specimen is two kinds of different Lining Rings of thickness (Shanghai rings and Guangzhou ring), 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 two kinds of lining structure of metros of thoroughly evaluating, 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 structure liner structure 1:1 that carries out first of China.Current test adopts monocycle, and longitudinal stressed of lining cutting do not considered in the impact of the lining cutting before and after not considering on it yet.Test with radially load application of 32 hydraulic jack, carrys out the actual loading of equivalent substitute lining cutting, and by bearing beam, by added load compared with Transmit evenly to lining cutting, with the test of 1999, compare, test load and actual loading comparatively approaching.
Within 2007, Shanghai Tunnel Engineering stock Co., Ltd cooperates with Tongji University, Shanghai Chongming tunnel is 44 with 44 cover lifting jack to be loaded pulling force approximate simulation evenly load, and these are divided into 4 groups to pulling force, as shown in Figure 7, to adjust the no load case of size simulation, this load mode adopts multiple spot to apply comprehensive load, even soil pressure and hydraulic pressure are mixed and applied.
Above-mentioned experimental facilities all has practical engineering project background, for solving the practical problems producing in engineering project, build, so most of experimental facilities after off-test all to remove.In addition, longitudinal stressed of Lining Ring do not considered in this test; Between the result of test and the result of pipe-plate lining structure in actual loading situation, there are differences.Therefore in order to verify bearing capacity and the stability of lining segment, grasp the true stressed and deformation rule of the thin portion in section of jurisdiction structure, with development viewpoint and long-range angle analysis, build more rationally, more perfect shield duct piece 1:1 testing equipment be necessary, be worth.
Utility model content
The utility model provides a kind of shield duct piece testing machine that solves the problem in existing shield duct piece test.
The utility model adopts following technical scheme:
Shield duct piece testing machine of the present utility model is comprised of self-equilibrating counter-force Core Walls Structure, oil cylinder force application apparatus, axial force charger, loading beam and base; The rounded bottommost that is positioned at shield duct piece testing machine of base; Self-equilibrating counter-force Core Walls Structure 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 respectively self-equilibrating counter-force Core Walls Structure and loading beam; Axial force charger is positioned on shield duct piece ring; On the circumference of self-equilibrating counter-force Core Walls Structure and shield duct piece ring, be 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 Walls Structure is comprised of upper cladding plate, vertical beam, upper hoop, middle hoop and lower hoop; Many vertical beams are of similar shape and size, and arrange along 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 many vertical beams and surrounds the top of 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 and lower hoop are connected with vertical beam by welding.
Vertical beam is ladle xoncrete structure, and self-equilibrating counter-force Core Walls Structure is arranged in a combination by 30 degree angles around axle center by 12 vertical beams, between every two vertical beams, leaves gap.
Upper hoop, middle hoop and lower hoop are welded by cutting into trapezoidal joist steel.
Oil cylinder force application apparatus is comprised of hydraulic jack, anchoring round steel and tension round steel; One end of described 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 Walls Structure inwall; One end of described 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, and internal thread anchor head inner side is provided with pad.
Axial force charger comprises the first backing plate, the second backing plate, pull bar and lifting jack; Two pull bars that be arranged in parallel, it is perpendicular to the first backing plate setting, and one end is fixedly connected with described the first backing plate; The 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 with respect to the first backing plate along pull bar; Lifting jack is positioned at the second backing plate top, and it applies towards the power of the first backing plate direction 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 lifting jack top, and reaction plate, with through hole, allows pull bar to pass, and reaction plate moves with respect to the first backing plate along pull bar; 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 comprised 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 slides to grab by bracket with slide rail and is connected, and has two slips to grab on every one slide rail; Oil cylinder rotary lifting mechanism is positioned at self-equilibrating counter-force Core Walls Structure top, for upper Vertical lifting load cylinder.
Oil cylinder rotary lifting mechanism forms by turning round support, motor, joist steel outrigger and electric block; Revolution is supported and is connected with upper cladding plate; Joist steel outrigger is horizontally placed on revolution and supports; Motor is positioned on joist steel outrigger; Electric block is positioned on joist steel outrigger, by driven by motor, is used for upper Vertical lifting load cylinder.
Self-equilibrating counter-force Core Walls Structure 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 Walls Structure: 1, provide hydraulic jack support reaction; 2, for oil piping system and hydrostatic control hardware provide placement space; 3, provide the vertical slip of hydraulic jack and locating platform.
Loading beam bottom is fixedly connected with base, 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 cake arrange, pipe sheet assembling provide structural support, and forms the edge-restraint condition of loading system and test specimen;
The main function of bearing beam base:
1, support bearing beam;
2, for bearing beam is assembled, provide location;
When 3, reducing testing machine and apply section of jurisdiction radial force because the small application of force angular deviation of lifting jack produces the additional stiction in bearing beam bottom that the vertical additional force of bearing beam causes;
Plant bottom case mainly refers to self-equilibrating counter-force Core Walls Structure 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 Walls Structure provides stability safety margin;
Good effect of the present utility model is as follows:
(1) shield duct piece testing machine of the present utility model has adopted a set of self balancing device (self-equilibrating counter-force Core Walls Structure), and simple economy can be realized again the imbalance of shield duct piece is loaded.The conventional loading of contrast, counter force system, such as utilizing counter force wall that counter-force is provided.During counter force wall production costs, take a lot of work, and take test site too much, after off-test, also need to remove; The load mode of ground lifting jack air exercise, the power of loading is too simple, can not realize the true stressed simulation in section of jurisdiction, can not realize uneven loading.
(2) self-equilibrating counter-force Core Walls Structure and plant bottom case system have been simplified the layout of lifting jack oil circuit system greatly, have more reasonably utilized space, have reduced the floor area of testing equipment, have optimized test Loading Control System, have reduced equipment construction cost.
(3) loading beam of shield duct piece testing machine of the present utility model 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 utility model all adopts 12 loadings radial and axial, can realize multiple spot and load.With liner structure test in the past as 4 of employings, to drawing to load, compare, can simulate better the stress characteristic of liner structure under normal operating condition.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of shield duct piece testing machine of the present utility model.
Fig. 2 is the schematic diagram of the self-equilibrating counter-force Core Walls Structure of shield duct piece testing machine of the present utility model.
Fig. 3 is the schematic diagram of the force application apparatus of shield duct piece testing machine of the present utility model.
Fig. 4 is the schematic diagram that the oil cylinder bracket of shield duct piece testing machine of the present utility model 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 utility model.
Fig. 6 is the schematic diagram of the axial force charger of shield duct piece testing machine of the present utility model.
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 Walls Structure, 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 turns round support, 3-5 motor, 3-6 joist steel outrigger, 3-7 electric block, 4 axial force chargers, 4-1 the first backing plate, 4-2 the 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 are to describe in further detail of the present utility model.
As shown in Figure 1: shield duct piece testing machine of the present utility model is comprised of self-equilibrating counter-force Core Walls Structure 1, oil cylinder force application apparatus 2, axial force charger 4, loading beam 5 and base 6; The rounded bottommost that is positioned at shield duct piece testing machine of base 6; Self-equilibrating counter-force Core Walls Structure 1 is positioned at the center of base 6; Shield duct piece ring 7 is positioned at the top at base 6 edges; 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 respectively self-equilibrating counter-force Core Walls Structure 1 and loading beam 5; Axial force charger 4 is positioned on shield duct piece ring 7; On the circumference of self-equilibrating counter-force Core Walls Structure 1 and shield duct piece ring 7, be 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 Walls Structure 1 is comprised 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 arrange along 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 many vertical beam 1-4 and surrounds the top of 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 and lower hoop 1-3 are connected with vertical beam 1-4 by welding.
As shown in Figure 3: oil cylinder force application apparatus 2 is comprised 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 cylinder body or the piston rod of hydraulic jack 2-1, and the other end is connected on self-equilibrating counter-force Core Walls Structure 1 inwall; One end of described tension round steel 2-3 is connected with another in cylinder body and the piston rod of hydraulic jack 2-1, and the other end is connected on loading beam 5.
As shown in Figure 4 and Figure 5: oil cylinder locating device 3 is comprised 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 and are grabbed 3-3 and be connected by bracket, have two slips to grab 3-3 on every one slide rail 3-2; Oil cylinder rotary lifting mechanism is positioned at self-equilibrating counter-force Core Walls Structure 1 top, for upper Vertical lifting load cylinder.
Oil cylinder rotary lifting mechanism forms by turning round support 3-4, motor 3-5, joist steel outrigger 3-6 and electric block 3-7; Revolution is supported 3-4 and is connected with upper cladding plate 1-5; Joist steel outrigger 3-6 is horizontally placed on revolution and supports on 3-4; Motor 3-5 is positioned on joist steel outrigger 3-6; It is upper that electric block 3-7 is positioned at joist steel outrigger 3-6, by motor 3-5, driven for upper Vertical lifting load cylinder.
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 impose on shield duct piece radial force, opposite side hydraulic jack is connected with self-equilibrating counter-force Core Walls Structure by anchoring round steel, plays the effect of firm and counter-force.
Axial force test aspect, jack pair the second pad applies downward power, gives the shield duct piece in the middle of them, and can also confine reaction plate by nut by the second pad and the first pad by axial force transmission, adds applying of larger axial force.
It is continuous distribution load that shield duct piece is subject to suffered load in actual formation, and therefore Loading Control is put the stressed more stressed close to actual formation of multitube sheet more, but the cost of shield duct piece testing machine for mechanical properties is also just higher, and system is also just more complicated.
So the utility model has contrasted traditional and 8 loadings and the stressing influence of 12 loadings of the present utility model to shield duct piece at 4.
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.
Comparative analysis by above-mentioned section of jurisdiction mechanical response is known, and the deformation pattern of each loading scheme and axial force diagram are basic identical in form, and with generally the actual suffered axle power in section of jurisdiction and deformation comparison approach.But the moment curve of each loading scheme and shear diagram have certain difference, see that Fig. 9 is known, during 4 loadings, the suffered moment curve form in section of jurisdiction and actual suffered moment of flexure form are not inconsistent completely.8 loadings are substantially similar with the suffered moment curve in section of jurisdiction in 12 loading schemes, but have certain difference.The moment curve of 8 loading schemes is steeper, changes comparatively 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 milder, and maximum hogging moment appears on haunch, also comparatively approaching with actual conditions in number of results magnitude.By known 12 loading schemes of the present utility model of above-mentioned analysis (segment deformation and stressed) comparison operators, close theoretical analysis result and actual section of jurisdiction stress deformation pattern.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that in the situation that not departing from principle of the present utility model and spirit and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claims and equivalent thereof.

Claims (10)

1. a shield duct piece testing machine, is characterized in that: described shield duct piece testing machine is comprised of self-equilibrating counter-force Core Walls Structure (1), oil cylinder force application apparatus (2), axial force charger (4), loading beam (5) and base (6); The rounded bottommost that is positioned at shield duct piece testing machine of base (6); Self-equilibrating counter-force Core Walls Structure (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 respectively self-equilibrating counter-force Core Walls Structure (1) and loading beam (5); Axial force charger (4) is positioned on shield duct piece ring (7); On the circumference of self-equilibrating counter-force Core Walls Structure (1) and shield duct piece ring (7), be 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).
2. shield duct piece testing machine as claimed in claim 1, is characterized in that: self-equilibrating counter-force Core Walls Structure (1) is comprised 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 arrange along 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 many vertical beams (1-4) and surrounds the top of 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) and lower hoop (1-3) are connected with vertical beam (1-4) by welding.
3. shield duct piece testing machine as claimed in claim 2, it is characterized in that: vertical beam (1-4) is ladle xoncrete structure, self-equilibrating counter-force Core Walls Structure is arranged in a combination by 30 degree angles around axle center by 12 vertical beams (1-4), between every two vertical beams (1-4), leaves gap.
4. shield duct piece testing machine as claimed in claim 2, 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.
5. shield duct piece testing machine as claimed in claim 1, is characterized in that: oil cylinder force application apparatus (2) is comprised 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 cylinder body or the piston rod of hydraulic jack (2-1), and the other end is connected on self-equilibrating counter-force Core Walls Structure (1) inwall; Another in cylinder body and the piston rod of one end of described tension round steel (2-3) and hydraulic jack (2-1) is connected, and the other end is connected on loading beam (5).
6. shield duct piece testing machine as claimed in claim 5, 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), and internal thread anchor head inner side is provided with pad.
7. 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); Two pull bars that be arranged in parallel (4-3), it arranges perpendicular to the first backing plate (4-1), and one end is fixedly connected with described the first backing plate (4-1); The 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 with respect to the first backing plate (4-1) along pull bar (4-3); Lifting jack (4-4) is positioned at the second backing plate (4-2) top, and it applies towards the power of the first backing plate (4-1) direction the second backing plate (4-2).
8. shield duct piece testing machine as claimed in claim 7, 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 with respect to the first backing plate (4-1) along pull bar (4-3); Pull bar (4-3) has thread segment at upper end, and on described thread segment, has screwed nut (4-6), and nut (4-6) is positioned at the top of reaction plate (4-5).
9. shield duct piece testing machine as claimed in claim 2, it is characterized in that: described shield duct piece testing machine also comprises oil cylinder locating device (3), oil cylinder locating device (3) is comprised 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) slide by bracket and grab (3-3) and be connected, and have two slips to grab (3-3) on every one slide rail (3-2); Oil cylinder rotary lifting mechanism is positioned at self-equilibrating counter-force Core Walls Structure (1) top, for upper Vertical lifting load cylinder.
10. shield duct piece testing machine as claimed in claim 9, is characterized in that: oil cylinder rotary lifting mechanism forms by turning round support (3-4), motor (3-5), joist steel outrigger (3-6) and electric block (3-7); Revolution is supported (3-4) and is connected with upper cladding plate (1-5); Joist steel outrigger (3-6) is horizontally placed on revolution and supports on (3-4); Motor (3-5) is positioned on joist steel outrigger (3-6); It is upper that electric block (3-7) is positioned at joist steel outrigger (3-6), by motor (3-5), driven for upper Vertical lifting load cylinder.
CN201320736386.3U 2013-11-21 2013-11-21 Shield segment testing machine CN203587331U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103575527A (en) * 2013-11-21 2014-02-12 中国建筑股份有限公司 Shield segment testing machine
CN109269900A (en) * 2018-09-05 2019-01-25 同济大学 A kind of stratum simulation and load testing machine for polycyclic shield tunnel construction
CN106153327B (en) * 2016-08-24 2019-03-26 中国铁建大桥工程局集团有限公司 A kind of TBM inclined shaft shield duct piece load testing machine and test method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103575527A (en) * 2013-11-21 2014-02-12 中国建筑股份有限公司 Shield segment testing machine
CN103575527B (en) * 2013-11-21 2016-03-02 中国建筑股份有限公司 A kind of shield duct piece testing machine
CN106153327B (en) * 2016-08-24 2019-03-26 中国铁建大桥工程局集团有限公司 A kind of TBM inclined shaft shield duct piece load testing machine and test method
CN109269900A (en) * 2018-09-05 2019-01-25 同济大学 A kind of stratum simulation and load testing machine for polycyclic shield tunnel construction

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