CN104964836A - Model test apparatus and method of simulating shield tunnel anti-buoyancy - Google Patents
Model test apparatus and method of simulating shield tunnel anti-buoyancy Download PDFInfo
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- CN104964836A CN104964836A CN201510275292.4A CN201510275292A CN104964836A CN 104964836 A CN104964836 A CN 104964836A CN 201510275292 A CN201510275292 A CN 201510275292A CN 104964836 A CN104964836 A CN 104964836A
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- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000002689 soil Substances 0.000 claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 238000007667 floating Methods 0.000 claims description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000004088 simulation Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 230000001737 promoting effect Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The invention provides a model test apparatus and method of simulating shield tunnel anti-buoyancy, comprising a soil box used for containing a test soil body; a tunnel model used for simulating tunnels; a motor used for lifting the tunnel model; a rack used for placing the motor; a dynamometer used for measuring anti-buoyancy; a data acquisition instrument used for collecting anti-buoyancy data in real time; a computer used for monitoring and recording data; and a test table used for placing the data acquisition instrument and the computer. The model test apparatus and method can accurately simulate the anti-buoyancy of an on-site real stratum to a tunnel under the conditions of different stratigraphic distribution, different tunnel diameters and different earthing depths, thereby reasonably selecting construction parameters and taking construction measures.
Description
Technical field
The present invention relates to construction engineering technical field, particularly, relate to model test apparatus and the method for a kind of mould simulation shield tunnel anti-floating power.
Background technology
Along with the fast development of urban transportation, the development and utilization of urban underground space has become a kind of trend, and shield tunnel, is widely applied in subway tunnel and vcehicular tunnel this advantage of the adaptability on various stratum with it.Particularly recent two decades comes, increasingly mature along with shield technique, and the diameter in circular shield tunnel is increasing.After construction time and work, the tunnel anti-floating issue concerns of operation stage is to the construction quality in tunnel and operation security, be subject to the great attention of engineers, how before constructing tunnel, just can obtain the size of stratum, place, tunnel to the anti-floating power in tunnel, for choose reasonable construction parameter and take working measure to have very important practical guided significance.
For the research of tunnel anti-floating, the scene that mainly concentrates at present takes measure of anti float to control the float-amount in tunnel, and adopt Finite Element Method to calculate ballast load needed for anti-floating, then the lead of required weight is placed on tunnel bottom and carries out ballast, control tunnel upward floating.Take measure of anti float to control tunnel upward floating for scene, by the method estimation tunnel anti-floating power estimated, anti-floating power accurately can only be can not get; For ballast load needed for FEM (finite element) calculation anti-floating, because construction condition is complicated, be difficult to the real anti-floating power obtained accurately needed for tunnel.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of model test apparatus and the method for simulating shield tunnel anti-floating power, use this test unit and method, can the distribution of accurate simulation Different Strata, under different tunnel diameter and different thickness of earth-fill cover, on-the-spot stratum, to the size of tunnel anti-floating power, reaches choose reasonable construction parameter and the object taking working measure.
According to an aspect of the present invention, a kind of model test apparatus of simulating shield tunnel anti-floating power is provided, comprise: for holding the native case of the test soil body, for the tunnel model of simulation tunnel, for promoting the motor of tunnel model, for placing the support of motor, for measuring the dynamometer of anti-floating power, for the data collecting instrument of Real-time Collection anti-floating power, for monitoring and recording the computing machine of data, for placing the experimental desk of data collecting instrument and computing machine; Wherein:
Described native case is the cuboid container of an end face opening, and its inside is used for holding the test soil body and water;
Described tunnel model is the hollow cylindrical body proportionally reducing the closed at both ends be made into according to actual tunnel, and to prevent the test soil body and moisture from entering, tunnel model is positioned over the inside of native case;
Described motor is fixed on support by securing member, for providing pulling force upwards for tunnel model;
Described Bracket setting in the top of native case, and is fixed by securing member and native case;
Described dynamometer is connected with tunnel model and motor by wire rope, for measuring the anti-floating power of stratum to tunnel model in real time;
Described data collecting instrument is connected with dynamometer by signal transmssion line, for Real-time Collection anti-floating power;
Described computing machine is connected with data collecting instrument by signal transmssion line, and it is built with Real-Time Monitoring software, for showing and process the test figure of data collecting instrument input in real time.
Preferably, a side bottom of described native case is provided with water delivering orifice, water delivering orifice is provided with ball valve and closes for the switch controlling water delivering orifice.
Preferably, the two ends of described tunnel model are connected with dynamometer after being respectively connected with an isometric wire rope again, and dynamometer is connected with motor again, thus ensures that tunnel model evenly rises under the driving of motor.
More preferably, the bottom of the centre distance soil case of described tunnel model at least doubles the diameter of tunnel model, is at least respectively four times in the diameter of tunnel model apart from the edge, the left and right sides of native case.
According to another aspect of the present invention, provide a kind of method based on described test unit, for shield tunnel anti-floating power monitoring test, concrete operation step is as follows:
1), support is fixed on native case by securing member, motor is fixed on support by securing member;
2), rotate ball valve, close the water delivering orifice of native case;
3), with checking survey the strata condition of report position, clear and definite on-the-spot tunnel, load the on-the-spot soil body fetched in native case inside, soil body thickness equals the diameter of 1.5 times of tunnel models;
4), tunnel model put into native case inner, be placed on the soil body of bottom, connecting steel wire ropes and dynamometer, connect dynamometer and motor;
5), continue to add the soil body, reach the thickness of earth-fill cover of needs, and according to on-the-spot waterline, add the water saturation of needs;
6), by signal transmssion line connection data Acquisition Instrument and dynamometer, and computing machine and data collecting instrument, connect the power supply of computing machine, data collecting instrument;
7), open computing machine and data collecting instrument, open the Real-Time Monitoring software installed in computing machine, then open motor;
8), motor is promoting in the process that evenly rises of tunnel model by wire rope, dynamometer can detect the pulling force signal be applied on tunnel model in real time, and this signal is input in computing machine and is also presented in the Real-Time Monitoring software of computing machine in real time after data collecting instrument collection; Pay close attention to the change of value of thrust in Real-Time Monitoring software, after discovery pulling force no longer increases or starts reduction, test can terminate, the maximum pull so obtained is the anti-floating power of this strata condition to tunnel model, converted by model ratio of similitude, the anti-floating power of on-the-spot actual formation to actual tunnel can be obtained.
Compared with prior art, the present invention has following beneficial effect:
Test unit of the present invention and method, can the distribution of accurate simulation Different Strata, under different tunnel diameter and different thickness of earth-fill cover, on-the-spot stratum, to the size of tunnel anti-floating power, reaches choose reasonable construction parameter and takes the object of working measure.
Accompanying drawing explanation
Fig. 1 is the cross-sectional configuration schematic diagram of one embodiment of the invention test unit;
Fig. 2 is the longitudinal plane structure schematic diagram of one embodiment of the invention test unit;
In figure:
1-native case, 2-tunnel model, 3-water delivering orifice, 4-ball valve, 5-dynamometer, 6-wire rope, 7-motor, 8-support, 9-set bolt, 10-experimental desk, 11-computing machine, 12-data collecting instrument, 13-signal transmssion line.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
As shown in Figure 1, for cross-sectional configuration schematic diagram of simulating the model test apparatus of shield tunnel anti-floating power a kind of described in the present embodiment, described device comprises: native case 1, tunnel model 2, dynamometer 5, wire rope 6, motor 7, support 8, experimental desk 10, computing machine 11 and data collecting instrument 12, wherein:
Described native case 1 is the cuboid container of an end face opening, is used for holding the test soil body and water;
It is inner that described tunnel model 2 is positioned over native case 1, and it is the hollow cylindrical body of the closed at both ends proportionally reducing making according to actual tunnel, prevents the test soil body and moisture from entering;
Described support 8 is arranged at the top of native case 1, and is fixed by set bolt 9 and native case 1, is used for placing motor 7;
Described motor 7 is fixed on support 8 by set bolt 9, for providing pulling force upwards for tunnel model 2;
Described dynamometer 5 is connected with tunnel model 2 and motor 7 by wire rope 6, is used for measuring the anti-floating power of stratum to tunnel model 2 in real time;
Described data collecting instrument 12 is connected with dynamometer 5, for Real-time Collection anti-floating power by signal transmssion line 13;
Described computing machine 11 is connected with data collecting instrument 12 by signal transmssion line 13, and it is built with Real-Time Monitoring software, for showing and process the test figure that data collecting instrument 12 inputs in real time;
Described experimental desk 10 is for placing data collecting instrument 12 and computing machine 11.
As one preferred embodiment, be provided with water delivering orifice 3 at a side bottom of described native case 1, and be provided with ball valve 4 on water delivering orifice 3; The switch that ball valve 4 controls water delivering orifice 3 closes: close ball valve 4 water delivering orifices 3 during test and close, open ball valve 4 after off-test, then water can flow out from water delivering orifice 3.
As one preferred embodiment, at least double the diameter of tunnel model 2 bottom the native case 1 of the centre distance of described tunnel model 2, be at least respectively four times in the diameter of tunnel model 2 apart from edge, native case 1 left and right sides.
As shown in Figure 2, be respectively connected with isometric wire rope 6 at described tunnel model 2 two ends, tunnel model 2 is connected by the bottom of wire rope 6 with dynamometer 5, and motor 7 is connected by the top of wire rope 6 with dynamometer 5, and the pulling force that tunnel model 2 is subject to measured by dynamometer 5; When motor 7 upwards promotes tunnel model 2 by wire rope 6 after opening, the uniform force at tunnel model 2 two ends thus can evenly rise; The motor 7 of the real-time detection of dynamometer 5 is simultaneously applied to the pulling force signal on tunnel model 2.
The concrete operation step that device described in application the present embodiment carries out shield tunnel anti-floating power monitoring test is as follows:
1, support 8 is fixed on native case 1 by set bolt 9, motor 7 is fixed on support 8 by set bolt 9;
2, rotate ball valve 4, close the water delivering orifice 3 of native case 1;
3, survey the strata condition of report position, clear and definite on-the-spot tunnel with checking, load the on-the-spot soil body fetched in native case 1 inside, soil body thickness equals the diameter of 1.5 times of tunnel models 2;
4, tunnel model 2 is put into native case 1 inner, be placed on the soil body of bottom, connecting steel wire ropes 6 and dynamometer 5, connect dynamometer 5 and motor 7;
5, continue to add the soil body, reach the thickness of earth-fill cover of needs, and according to on-the-spot waterline, add the water saturation of needs;
6, by signal transmssion line 13 connection data Acquisition Instrument 12 and dynamometer 5, and computing machine 11 and data collecting instrument 12, connect the power supply of computing machine 11, data collecting instrument 12;
7, open computing machine 11 and data collecting instrument 12, open the Real-Time Monitoring software installed in computing machine 11, then open motor 7, the linear velocity of setting motor 7 is 1mm/min;
8, motor 7 passes through wire rope 6 in the process promoting tunnel model 2 rising, dynamometer 5 can detect the pulling force signal be applied on tunnel model 2 in real time, and this signal is input in computing machine 11 and is also presented in the Real-Time Monitoring software of computing machine 11 in real time after data collecting instrument 12 gathers; Pay close attention to the change of value of thrust in Real-Time Monitoring software, after discovery pulling force no longer increases or starts reduction, test can terminate, the maximum pull so obtained is the anti-floating power of this strata condition to tunnel model 2, converted by model ratio of similitude, the anti-floating power of on-the-spot actual formation to actual tunnel can be obtained.
A kind of model test apparatus and method simulating shield tunnel anti-floating power of the present invention, can the distribution of accurate measurements Different Strata, under different tunnel diameter and different thickness of earth-fill cover, on-the-spot actual formation, to the size of tunnel anti-floating power, reaches choose reasonable construction parameter and the object taking working measure.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (6)
1. simulate the model test apparatus of shield tunnel anti-floating power for one kind, it is characterized in that, comprise: for holding the native case of the test soil body, for the tunnel model of simulation tunnel, for promoting the motor of tunnel model, for placing the support of motor, for measuring the dynamometer of anti-floating power, for the data collecting instrument of Real-Time Monitoring anti-floating power, for recording and processing the computing machine of data, for placing the experimental desk of data collecting instrument and computing machine; Wherein:
Described native case is the cuboid container of an end face opening, and its inside is used for holding the test soil body and water;
Described tunnel model is the hollow cylindrical body proportionally reducing the closed at both ends be made into according to actual tunnel, and to prevent the test soil body and moisture from entering, tunnel model is positioned over the inside of native case;
Described motor is fixed on support by securing member, for providing pulling force upwards for tunnel model;
Described Bracket setting in the top of native case, and is fixed by securing member and native case;
Described dynamometer is connected with tunnel model and motor by wire rope, for measuring the anti-floating power of stratum to tunnel model in real time;
Described data collecting instrument is connected with dynamometer by signal transmssion line, for Real-time Collection anti-floating power;
Described computing machine is connected with data collecting instrument by signal transmssion line, and it is built with Real-Time Monitoring software, for showing and process the test figure of data collecting instrument input in real time.
2. a kind of model test apparatus of simulating shield tunnel anti-floating power according to claim 1, is characterized in that, a side bottom of described native case is provided with water delivering orifice, water delivering orifice is provided with ball valve and closes for the switch controlling water delivering orifice.
3. a kind of model test apparatus of simulating shield tunnel anti-floating power according to claim 1, it is characterized in that, the two ends of described tunnel model are connected with dynamometer after being respectively connected with an isometric wire rope again, dynamometer is connected with motor again, thus ensures that tunnel model evenly rises under the driving of motor.
4. a kind of model test apparatus of simulating shield tunnel anti-floating power according to claim 3, it is characterized in that, the bottom of the centre distance soil case of described tunnel model at least doubles the diameter of tunnel model, is at least respectively four times in the diameter of tunnel model apart from the edge, the left and right sides of native case.
5., based on a model test method for the simulation shield tunnel anti-floating power of test unit described in any one of the claims 1-4, it is characterized in that, described method comprises the steps:
1), support is fixed on native case by securing member, motor is fixed on support by securing member;
2), rotate ball valve, close the water delivering orifice of native case;
3), with checking survey the strata condition of report position, clear and definite on-the-spot tunnel, load the on-the-spot soil body fetched in native case inside;
4), tunnel model put into native case inner, be placed on the soil body of bottom, connecting steel wire ropes and dynamometer, connect dynamometer and motor;
5), continue to add the soil body, reach the thickness of earth-fill cover of needs, and according to on-the-spot waterline, add the water saturation of needs;
6), by signal transmssion line connection data Acquisition Instrument and dynamometer, and computing machine and data collecting instrument, connect the power supply of computing machine, data collecting instrument;
7), open computing machine and data collecting instrument, open the Real-Time Monitoring software installed in computing machine, then open motor;
8), motor is promoting in the process that evenly rises of tunnel model by wire rope, dynamometer can detect the pulling force signal be applied on tunnel model in real time, and this signal is input in computing machine and is also presented in the Real-Time Monitoring software of computing machine in real time after data collecting instrument collection; Pay close attention to the change of value of thrust in Real-Time Monitoring software, after discovery pulling force no longer increases or starts reduction, test can terminate, the maximum pull so obtained is the anti-floating power of this strata condition to tunnel model, converted by model ratio of similitude, the anti-floating power of on-the-spot actual formation to actual tunnel can be obtained.
6. a kind of model test method of simulating shield tunnel anti-floating power according to claim 5, is characterized in that, described step 3) in, load the on-the-spot soil body fetched in native case inside, this soil body thickness equals the diameter of 1.5 times of tunnel models.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389532A (en) * | 2017-09-05 | 2017-11-24 | 贵州省交通规划勘察设计研究院股份有限公司 | A kind of experimental rig and method for being used to test porous engineering material space distribution characteristics |
| CN109883590A (en) * | 2019-02-28 | 2019-06-14 | 上海交通大学 | A kind of seat bottom structure buoyancy measurement experimental rig and method |
| CN110657943A (en) * | 2019-10-18 | 2020-01-07 | 浙江科技学院 | Experimental device for simulating shield tunnel segment floating |
| CN110987507A (en) * | 2019-12-30 | 2020-04-10 | 北京城建勘测设计研究院有限责任公司 | Buoyancy model test device |
| CN111044347A (en) * | 2019-12-06 | 2020-04-21 | 中交天津港湾工程研究院有限公司 | Test device and method for measuring buoyancy borne by embedded pipeline |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0791691A1 (en) * | 1996-02-22 | 1997-08-27 | Ballast Nedam Engineering B.V. | Road tunnel and method for building same |
| CN1306131A (en) * | 2001-02-28 | 2001-08-01 | 上海交通大学 | Platform for sinking combined simple turnnel pipe segments |
| CN201241707Y (en) * | 2008-08-15 | 2009-05-20 | 上海隧道工程股份有限公司 | Tunnel upward floating model trial apparatus |
| CN104005363A (en) * | 2014-06-13 | 2014-08-27 | 东南大学 | Three-dimensional underground pressure-bearing water flow-subway tunnel structure interaction simulating device |
-
2015
- 2015-05-26 CN CN201510275292.4A patent/CN104964836B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0791691A1 (en) * | 1996-02-22 | 1997-08-27 | Ballast Nedam Engineering B.V. | Road tunnel and method for building same |
| CN1306131A (en) * | 2001-02-28 | 2001-08-01 | 上海交通大学 | Platform for sinking combined simple turnnel pipe segments |
| CN201241707Y (en) * | 2008-08-15 | 2009-05-20 | 上海隧道工程股份有限公司 | Tunnel upward floating model trial apparatus |
| CN104005363A (en) * | 2014-06-13 | 2014-08-27 | 东南大学 | Three-dimensional underground pressure-bearing water flow-subway tunnel structure interaction simulating device |
Non-Patent Citations (3)
| Title |
|---|
| 叶飞: "基于弹性地基梁的盾构隧道纵向上浮分析", 《中国铁道科学》 * |
| 张旭: "考虑土体——隧道共同作用的盾构隧道三维有限元分析", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 张第轩: "地下结构抗浮模型试验研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389532A (en) * | 2017-09-05 | 2017-11-24 | 贵州省交通规划勘察设计研究院股份有限公司 | A kind of experimental rig and method for being used to test porous engineering material space distribution characteristics |
| CN109883590A (en) * | 2019-02-28 | 2019-06-14 | 上海交通大学 | A kind of seat bottom structure buoyancy measurement experimental rig and method |
| CN110657943A (en) * | 2019-10-18 | 2020-01-07 | 浙江科技学院 | Experimental device for simulating shield tunnel segment floating |
| CN110657943B (en) * | 2019-10-18 | 2021-09-28 | 浙江科技学院 | Experimental device for simulating shield tunnel segment floating |
| CN111044347A (en) * | 2019-12-06 | 2020-04-21 | 中交天津港湾工程研究院有限公司 | Test device and method for measuring buoyancy borne by embedded pipeline |
| CN110987507A (en) * | 2019-12-30 | 2020-04-10 | 北京城建勘测设计研究院有限责任公司 | Buoyancy model test device |
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