CN203465148U - Loading device for tunnel lining full-ring structure test - Google Patents
Loading device for tunnel lining full-ring structure test Download PDFInfo
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- CN203465148U CN203465148U CN201320545219.0U CN201320545219U CN203465148U CN 203465148 U CN203465148 U CN 203465148U CN 201320545219 U CN201320545219 U CN 201320545219U CN 203465148 U CN203465148 U CN 203465148U
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Abstract
The utility model discloses a loading device for a tunnel lining full-ring structure test. The loading device comprises a central counter-force device and multiple groups of loading points radially and uniformly distributed along the central counter-force device and connected with the central counter-force device, wherein each group of loading points orderly comprises a capacity distributive girder, a hydraulic device, a holding girder and at least one pull rods from outside to inside, the capacity distributive girders and the holding girders are respectively provided with mounting holes corresponding to the pull rods, the pull rods are fixed on the central counter-force device after penetrating through the capacity distributive girders and the holding girders; a lining full-ring sample is radially distributed on the inner side of the holding girder 6, the hydraulic device is arranged between the capacity distributive girders and the holding girders to provide the load. By adopting a self-balanced pull rod-counter force girder loading system, capacities of all loading points are converged on the central counter force device to form a self-balanced loading system, and the whole device is simple and clear in force transfer path, low in cost, convenient to mount and low in requirements on the test site.
Description
Technical field
The utility model belongs to the structural test technical field in civil engineering work, relates to a kind of special structural test charger.
Background technology
At present, subway transportation construction scale is increasing, a lot of cities put subway into operation, some metropolitan subway has moved for many years, the tubular structure of the subway tunnel of building by shield structure (machine) technology is called lining cutting, lining cutting is to be combined into ring by reinforced concrete segment, then ring by ring lining cutting is coupled together to formation tunnel.The Water And Earth Pressures of periphery is born in tunnel-liner, and excessive or inhomogeneous Water And Earth Pressures causes Lining Ring to produce " ellipticity " distortion, even destroys, and jeopardizes subway circulation safety.
Tunnel-liner experimental study is divided into section of jurisdiction test and domain test two large classes, and 1:1 prototype lining cutting domain structural test is the effective means of research structure performance, and the tunnel-liner domain is in the past tested and is design verification and tests both at home and abroad, and test piece deformation is smaller.Along with the operation for many years of part circuit shield tunnel, the lateral pressure of liner structure changes, and part lining cutting has produced larger distortion, now needs that structure is carried out to consolidation process and comes control structure deformation after unloading and load-bearing capacity.In order to evaluate the effect of existing reinforcing means and to select suitable reinforcing opportunity, need to carry out prototype lining cutting domain structural limits load carrying capacity test.
Compare with design verification test, lining cutting domain structural limits load carrying capacity test has very large challenge.First the ultimate load and the ultimate deformation that are liner structure are relatively large, and show as the large bias voltage of hoop.Secondly, test specimen need to be loaded into the deflection of appointment, keep this deflection not change within the time of about one week, interior during this period Lining Ring be reinforced, in reinforcing process, can not have vibration effect, loading lifting jack need to quit work.
Utility model content
The purpose of this utility model is to provide a kind of tunnel-liner domain structural test charger,
For achieving the above object, solution of the present utility model is:
A kind of tunnel-liner domain structural test charger, comprise center counterforce device, the many groups load(ing) point that is radially uniformly distributed and is connected with described center counterforce device along described center counterforce device, described every group of load(ing) point radially comprises load distribution beam from outside to inside successively, hydraulic means, hold He Liang and at least one pull bar, described load distribution beam with described in hold the corresponding described pull bar of lotus beam and be respectively equipped with mounting hole, described pull bar through described load distribution beam with described in be fixed on the counterforce device of described center after holding He Liang, described hydraulic means be installed on described load distribution beam and described in hold between lotus beam so that load to be provided.
The described He Liang of holding and described pull bar junction are provided with check nut.
Every group of load(ing) point is distributed with two pull bars, described two pull bars be positioned at described load distribution beam with described in hold He Liang two ends.
Described center counterforce device is dumbbell shape structure, comprise supporting seat, be fixedly installed in the circular combination steel plate at the upper and lower two ends of described supporting seat, described circular combination steel plate comprises respectively upper and lower two groups of circular steel plates that are fixedly connected with, the quantity of the corresponding described load(ing) point in described upper and lower circular two groups of steel plate connecting sewing places is radially evenly provided with many group latches, and the distance between described upper and lower two groups of latches equates with the distance between described two pull bars.
Described pull bar is connected by latch with described center counterforce device.
Also comprise a plurality of base for supporting, the quantity of described base for supporting is identical with described load(ing) point quantity, and described base for supporting is evenly arranged in the below of the described lining cutting domain to support the described lining cutting domain.
Described tunnel-liner domain structural test charger also comprises ball assembly, friction force when described ball assembly is arranged at described base for supporting below with minimizing test between test specimen and ground.
Described tunnel-liner domain structural test charger is provided with 16～32 groups of load(ing) points.
Described pull bar is reinforcing pull rod.
Described hydraulic means is hydraulic jack.
Owing to adopting such scheme, the beneficial effects of the utility model are:
Tunnel-liner domain structural test charger shown in the utility model, adopt the pull bar-reaction beam of self-equilibrating to load system, all load(ing) point loads are compiled in center counterforce device, form self-balance loading system, the load of each load(ing) point is held by a load distribution beam, one steel structure device that He Liang and two reinforcing pull rods form and is provided.
When carrying out tunnel-liner domain structure load test, hold the bearing beam that He Liang initiatively loads as hydraulic jack, for guaranteeing that load is along being vertically uniformly distributed, whole self-equilibrating charger force path is succinct, clear and definite, cost is low, easy for installation, less demanding to test site.
In addition, holding He Liang also coordinates with check nut, in simulation tunnel lining reinforcement working condition tests, hold He Liang and check nut and in the out-of-work situation of hydraulic jack, keep the deflection of lining cutting domain test specimen, facilitate strengthening construction, meet tunnel-liner domain structural limits load carrying capacity test and can under large deformation, to test structure, reinforce after the experiment loading unit of second trial.
Accompanying drawing explanation
Fig. 1 is the vertical view of the utility model one embodiment floor plan;
Fig. 2 is the vertical cross section figure of middle load(ing) point embodiment illustrated in fig. 1;
In accompanying drawing, 1-center counterforce device, 2-steel cylinder latch, 3,3 '-pull bar, 4-domain lining cutting test specimen, 5-base for supporting, 6-hold He Liang, 7,7 '-check nut, 8-hydraulic means, 9-load distribution beam.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the utility model is further described.
As depicted in figs. 1 and 2, a kind of tunnel-liner domain structural test charger, comprises that counterforce device 1 ,Yan center counterforce device 1 in center is radially uniformly distributed many groups load(ing) point that Bing Yu center counterforce device 1 is connected.Every group of load(ing) point radially comprises load distribution beam 9 from outside to inside successively, hydraulic means 8, hold lotus beam 6 and at least one pull bar, load distribution beam 9 with hold the corresponding pull bar of lotus beam 6 and be respectively equipped with mounting hole, pull bar is fixed on center counterforce device 1 through load distribution beam 9 and after holding lotus beam 6, between pull bar and load distribution beam 9, by plain nut, fix, lining cutting domain test specimen 4 radial arrangement are being held below lotus beam 6, hydraulic means 8 is installed on load distribution beam 9 and holds between lotus beam 6 so that load to be provided, load distribution beam 9 with hold the range that lotus beam 6 distance is between the two not more than hydraulic jack.
Tunnel-liner domain structural test charger is also provided with base for supporting 5, base for supporting 5 is arranged in the bottom of lining cutting domain test specimen 4 uniformly, the quantity of base for supporting 5 equates with the quantity of load(ing) point, lining cutting domain test specimen 4 supports and regulates levelness by test specimen supporting seat 5, test specimen supporting seat 5 is divided into ball assembly, in the time of can reducing to test, the friction force in the process that lining cutting domain test specimen 4 pressurizeds deform between lining cutting domain test specimen 4 and ground.
Subway Tunnel Lining is the distributed load along periphery at the underground side direction Water And Earth Pressures being subject to, very difficult owing to applying distributed load in laboratory, tunnel-liner domain structural test charger shown in the utility model is by applying equivalent concentration line load with the pressurized situation of simulation Subway Tunnel Lining, circumferential distribution load is equivalent to the load that many groups load(ing) point as shown in Figure 1 provides, general, can simulate by 16～32 load(ing) points are set.
Fig. 1 and embodiment illustrated in fig. 2 in, 24 groups of load(ing) points are set altogether, consider the efficiency of loading and the structure of whole device, in every group of load(ing) point, be respectively equipped with two pull bars 3 and 3 ', and pull bar 3 and 3 ' is reinforcing pull rod.Pull bar 3 and 3 ' is arranged in load distribution beam 9 and the position of holding two ends on lotus beam 6, center counterforce device 1 is vertical dumbbell shape structure of placing, comprise supporting seat, be fixedly installed in the circular combination steel plate at the upper and lower two ends of supporting seat, circular combination steel plate comprises respectively upper and lower two groups of circular steel plates, between upper and lower circular two groups of steel plates, be bolted and keep certain gap, the corresponding load(ing) point of seam crossing between upper and lower circular two groups of steel plates is radially all arranged with 24 groups of latches 2, and the distance between upper and lower two groups of latches 2 equates with the distance between two pull bars, thereby reinforcing pull rod 3 and 3 ' passes load distribution beam 9 and holds between lotus beam 6 Hou Yu center counterforce devices 1 and can be connected by latch 2.Hydraulic means 8 is hydraulic jack, meanwhile, is also evenly provided with 24 groups of base for supporting 5 and ball assembly in the bottom of lining cutting domain test specimen 4.
Simulating Lining Ring in underground born water and soil equilibrium load experiment, when by carrying out shown in Fig. 1 and Fig. 2 after lining cutting domain test specimen 4 and charger assembled, hydraulic jack starts to exert pressure according to testing requirements, the power of hydraulic jack turns to line load and acts on lining cutting domain test specimen 4 by holding lotus beam 6, the counter-force of hydraulic jack is provided by load distribution beam 9, now, the kick of the suffered hydraulic jack of load distribution beam 9 passes on center counterforce device 1 by reinforcing pull rod 3 and 3 '.Reinforcing pull rod 3 is connected by latch 2 with 3 ’Yu center counterforce devices.24 loads are all pooled to center counterforce device thus, and the charger that forms a set of self-equilibrating is simulated Lining Ring at underground born water and soil equilibrium load.When lining cutting domain test specimen 4 pressurizeds deform, due between lining cutting domain test specimen 4 and ground, by base for supporting 5, be connected with ball assembly, therefore test specimen is being become in oval-shaped process from circle, friction force is less, guarantees the precision of test figure.
Simultaneously, when excessive distortion appears in actual tunnel-liner, while becoming ellipse by initial round section, need to reinforce lining cutting domain test specimen 4, in order to simulate reinforcing process and to understand the ultimate bearing performance of reinforcing rear lining cutting domain structure, need first lining cutting domain test specimen 4 to be loaded into default deflection, then keep this deflection to stablize and give structural strengthening, in reinforcing process in order to meet the curing requirement of reinforcement material, must not be subject to vibration effect, hydraulic jack must quit work.
Therefore the tunnel-liner domain structural test charger shown in the utility model is provided with check nut with pull bar 3 and 3 ' connection holding lotus beam 6, in the present embodiment, correspondence is provided with two groups of check nuts 7 and 7 ', keeps the deflection of Lining Ring and not vibrative requirement while reinforcing to meet.During test, concrete process of the test is as follows: first by specifying load tentatively to be loaded by hydraulic jack, make lining cutting domain test specimen 4 produce the deflection of appointment, then tighten check nut 7 and 7 ', now hold lotus beam 6 and be subject to the passive pressure that lining cutting domain test specimen 4 transmits, then close hydraulic jack, carry out liner structure reinforcing.Approximately the cementing agent of week age reinforcing use is completely curing, can carry out load test for the second time, during test, first apply jack load to default load, loosening check nut 7 and 7 ', by specifying loading procedure to complete follow-up test step, load-bearing capacity and complete collapse state until test specimen reaches capacity.
Tunnel-liner domain structural test charger shown in the utility model, adopt the pull bar-reaction beam of self-equilibrating to load system, all load(ing) point loads are compiled in center counterforce device 1, form self-balance loading system, the load of each load(ing) point is held lotus beam 6 and two reinforcing pull rods 3 and the 3 ' steel structure device forming by a load distribution beam 9, one and is provided.In this test unit, hold lotus beam 6 except the bearing beam initiatively loading as hydraulic jack, outside being used for guaranteeing that load edge is vertically uniformly distributed, also coordinate with check nut 7 and 7 ', in simulation tunnel lining reinforcement working condition tests, hold lotus beam 6 and check nut and in the out-of-work situation of hydraulic jack, keep the deflection of lining cutting domain test specimen 4, facilitate strengthening construction, meet tunnel-liner domain structural limits load carrying capacity test and can under large deformation, to test structure, reinforce after the experiment loading unit of second trial.
The above-mentioned description to embodiment is can understand and use the utility model for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the utility model is not limited to above-described embodiment, and those skilled in the art are according to announcement of the present utility model, and not departing from the improvement that the utility model category makes and revise all should be within protection domain of the present utility model.
Claims (10)
1. a tunnel-liner domain structural test charger, it is characterized in that: comprise center counterforce device, the many groups load(ing) point that is radially uniformly distributed and is connected with described center counterforce device along described center counterforce device, described every group of load(ing) point radially comprises load distribution beam from outside to inside successively, hydraulic means, hold He Liang and at least one pull bar, described load distribution beam with described in hold the corresponding described pull bar of lotus beam and be respectively equipped with mounting hole, described pull bar through described load distribution beam with described in be fixed on the counterforce device of described center after holding He Liang, described hydraulic means be installed on described load distribution beam and described in hold between lotus beam so that load to be provided.
2. tunnel-liner domain structural test charger according to claim 1, is characterized in that: described in hold He Liang and described pull bar junction is provided with check nut.
3. tunnel-liner domain structural test charger according to claim 1 and 2, is characterized in that: every group of load(ing) point is distributed with two pull bars, described two pull bars be positioned at described load distribution beam with described in hold He Liang two ends.
4. tunnel-liner domain structural test charger according to claim 3, it is characterized in that: described center counterforce device is dumbbell shape structure, comprise supporting seat, be fixedly installed in the circular combination steel plate at the upper and lower two ends of described supporting seat, described circular combination steel plate comprises respectively upper and lower two groups of circular steel plates that are fixedly connected with, the quantity of the corresponding described load(ing) point in described upper and lower circular two groups of steel plate connecting sewing places is radially evenly provided with many group latches, and the distance between described upper and lower two groups of latches equates with the distance between described two pull bars.
5. tunnel-liner domain structural test charger according to claim 4, is characterized in that: described pull bar is connected by latch with described center counterforce device.
6. tunnel-liner domain structural test charger according to claim 1 and 2, it is characterized in that: also comprise a plurality of base for supporting, the quantity of described base for supporting is identical with described load(ing) point quantity, and described base for supporting is evenly arranged in the bottom of the described lining cutting domain to support the described lining cutting domain.
7. tunnel-liner domain structural test charger according to claim 6, is characterized in that: also comprise ball assembly, friction force when described ball assembly is arranged at described base for supporting below with minimizing test between test specimen and ground.
8. tunnel-liner domain structural test charger according to claim 1 and 2, is characterized in that: be provided with 16～32 groups of load(ing) points.
9. tunnel-liner domain structural test charger according to claim 1 and 2, is characterized in that: described pull bar is reinforcing pull rod.
10. tunnel-liner domain structural test charger according to claim 1 and 2, is characterized in that: described hydraulic means is hydraulic jack.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320545219.0U CN203465148U (en) | 2013-09-03 | 2013-09-03 | Loading device for tunnel lining full-ring structure test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320545219.0U CN203465148U (en) | 2013-09-03 | 2013-09-03 | Loading device for tunnel lining full-ring structure test |
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| CN203465148U true CN203465148U (en) | 2014-03-05 |
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| CN201320545219.0U Expired - Fee Related CN203465148U (en) | 2013-09-03 | 2013-09-03 | Loading device for tunnel lining full-ring structure test |
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| CN104458242A (en) * | 2014-12-28 | 2015-03-25 | 上海隧道工程股份有限公司 | Rectangular shield segment test loading device |
| CN104458243A (en) * | 2014-12-28 | 2015-03-25 | 上海隧道工程股份有限公司 | Level test loading device for rectangular shield segment |
| CN104502137A (en) * | 2015-01-16 | 2015-04-08 | 招商局重庆交通科研设计院有限公司 | Tunnel lining structure uniform load test system and sealing method thereof |
| CN104748993A (en) * | 2015-03-31 | 2015-07-01 | 长安大学 | Load equipment of tunnel lining structural mechanics property simulation test device |
| CN105910838A (en) * | 2016-04-08 | 2016-08-31 | 同济大学 | Circular whole loop tunnel structure test device |
| CN106248492A (en) * | 2016-08-10 | 2016-12-21 | 天津大学 | A kind of assay device of the intrinsic pressure loading of shield tunnel pipe ring |
| CN106290001A (en) * | 2016-08-30 | 2017-01-04 | 天津大学 | Shield tunnel segment lining is by the load testing machine of high temperature combined load effect |
| CN107941497A (en) * | 2017-12-11 | 2018-04-20 | 同济大学 | A kind of shield duct piece model test reaction frame |
| CN107941594A (en) * | 2017-09-04 | 2018-04-20 | 中国矿业大学(北京) | A kind of multifunction test device for liner structure |
| CN108344638A (en) * | 2018-01-24 | 2018-07-31 | 浙江大学城市学院 | A kind of compound mortar reinforces the indoor test method of existing subway tunnel structure effect |
| CN108827669A (en) * | 2018-03-12 | 2018-11-16 | 同济大学 | It is a kind of for simulating the pilot system of tunnel deformation destruction characteristic |
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| CN110286037A (en) * | 2019-07-23 | 2019-09-27 | 上海隧道工程有限公司 | The method of test loading force is accurately calculated in a kind of tunnel duct piece domain structural test |
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| CN112858018A (en) * | 2021-01-08 | 2021-05-28 | 青岛海洋地质研究所 | Device and method for testing lateral pressure creep of hydrate-containing sediment |
| CN112857988A (en) * | 2021-01-29 | 2021-05-28 | 中国科学院武汉岩土力学研究所 | Asymmetric load loading test system and test method for full-scale test of pipe piece |
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| CN104458243A (en) * | 2014-12-28 | 2015-03-25 | 上海隧道工程股份有限公司 | Level test loading device for rectangular shield segment |
| CN104458242B (en) * | 2014-12-28 | 2017-09-15 | 上海隧道工程有限公司 | Class rectangle shield duct piece experiment loading unit |
| CN104458242A (en) * | 2014-12-28 | 2015-03-25 | 上海隧道工程股份有限公司 | Rectangular shield segment test loading device |
| CN104502137A (en) * | 2015-01-16 | 2015-04-08 | 招商局重庆交通科研设计院有限公司 | Tunnel lining structure uniform load test system and sealing method thereof |
| CN104748993A (en) * | 2015-03-31 | 2015-07-01 | 长安大学 | Load equipment of tunnel lining structural mechanics property simulation test device |
| CN105910838B (en) * | 2016-04-08 | 2018-09-28 | 同济大学 | One kind is for round domain tunnel structure test device |
| CN105910838A (en) * | 2016-04-08 | 2016-08-31 | 同济大学 | Circular whole loop tunnel structure test device |
| CN106248492A (en) * | 2016-08-10 | 2016-12-21 | 天津大学 | A kind of assay device of the intrinsic pressure loading of shield tunnel pipe ring |
| CN106290001A (en) * | 2016-08-30 | 2017-01-04 | 天津大学 | Shield tunnel segment lining is by the load testing machine of high temperature combined load effect |
| CN107941594A (en) * | 2017-09-04 | 2018-04-20 | 中国矿业大学(北京) | A kind of multifunction test device for liner structure |
| CN107941497A (en) * | 2017-12-11 | 2018-04-20 | 同济大学 | A kind of shield duct piece model test reaction frame |
| CN108344638A (en) * | 2018-01-24 | 2018-07-31 | 浙江大学城市学院 | A kind of compound mortar reinforces the indoor test method of existing subway tunnel structure effect |
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| CN110567737A (en) * | 2018-06-05 | 2019-12-13 | 深圳光启尖端技术有限责任公司 | Equivalent wind load loading 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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| CN110006641A (en) * | 2019-04-16 | 2019-07-12 | 宁波用躬科技有限公司 | Class rectangle shield duct piece horizontal pulling test loading device and loading method |
| CN110286037B (en) * | 2019-07-23 | 2021-10-12 | 上海隧道工程有限公司 | Method for accurately calculating test loading force in tunnel tube sheet whole-ring structure test |
| CN110286037A (en) * | 2019-07-23 | 2019-09-27 | 上海隧道工程有限公司 | The method of test loading force is accurately calculated in a kind of tunnel duct piece domain structural test |
| CN111610101A (en) * | 2020-04-28 | 2020-09-01 | 中铁工程服务有限公司 | Steel bow member compression experiment platform |
| CN111610101B (en) * | 2020-04-28 | 2023-10-24 | 中铁工程服务有限公司 | Steel arch compression experiment table |
| CN112129620A (en) * | 2020-09-29 | 2020-12-25 | 中铁工程装备集团有限公司 | Pipe joint loading test distribution beam, test device and test method |
| CN112129620B (en) * | 2020-09-29 | 2024-05-17 | 中铁工程装备集团有限公司 | Pipe joint loading test distribution beam, test device and test method |
| CN112858018A (en) * | 2021-01-08 | 2021-05-28 | 青岛海洋地质研究所 | Device and method for testing lateral pressure creep of hydrate-containing sediment |
| CN112857988A (en) * | 2021-01-29 | 2021-05-28 | 中国科学院武汉岩土力学研究所 | Asymmetric load loading test system and test method for full-scale test of pipe piece |
| CN113009067B (en) * | 2021-02-25 | 2022-01-14 | 中国矿业大学 | Tunnel structure multi-dimensional space loading fire test system and implementation method thereof |
| CN113009067A (en) * | 2021-02-25 | 2021-06-22 | 中国矿业大学 | Tunnel structure multi-dimensional space loading fire test system and implementation method thereof |
| CN113155595A (en) * | 2021-04-29 | 2021-07-23 | 中国能源建设集团江苏省电力设计院有限公司 | Tension-compression experimental device |
| CN113432998A (en) * | 2021-07-23 | 2021-09-24 | 中国建筑第七工程局有限公司 | Distributed load applying device and method for tunnel lining |
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