CN201241707Y - Tunnel upward floating model trial apparatus - Google Patents

Tunnel upward floating model trial apparatus Download PDF

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Publication number
CN201241707Y
CN201241707Y CNU2008201520075U CN200820152007U CN201241707Y CN 201241707 Y CN201241707 Y CN 201241707Y CN U2008201520075 U CNU2008201520075 U CN U2008201520075U CN 200820152007 U CN200820152007 U CN 200820152007U CN 201241707 Y CN201241707 Y CN 201241707Y
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CN
China
Prior art keywords
tunnel
displacement meter
test
lining segment
tunnel lining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2008201520075U
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Chinese (zh)
Inventor
林家祥
巴雅吉乎
谢彬
黄均龙
杨方勤
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Shanghai Tunnel Engineering Co Ltd
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Shanghai Tunnel Engineering Co Ltd
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Filing date
Publication date
Application filed by Shanghai Tunnel Engineering Co Ltd filed Critical Shanghai Tunnel Engineering Co Ltd
Priority to CNU2008201520075U priority Critical patent/CN201241707Y/en
Application granted granted Critical
Publication of CN201241707Y publication Critical patent/CN201241707Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a tunnel floating model test device, comprising a simulated tunnel lining segment, a displacement meter, a simulated soil box and a compartment. The simulated soil box adopts a hollow closed container capable for pressurizing, which can contain soil and water. The displacement meter is fixed in the simulated soil box. The compartment is arranged in the simulated soil box, which upper and lower parts are open and the compartment can contain slurry. The simulated tunnel lining segment is arranged in the compartment, which can change weight to simulate different tunnel entities. The tunnel floating model test device can effectively simulate the floating conditions of entity tunnel lining segments under complex working conditions, such as different soils, different slurries and different soil covering depths, and can improve the approximation effect between test results and actual conditions, thereby providing reference data more tally and effectively with the actual situation for the research of tunnel floating problems.

Description

Tunnel come-up model test apparatus
Technical field:
The utility model relates to the experimental rig that is used for the construction of tunnel technical field, relates in particular to a kind of tunnel come-up model test apparatus.
Background technology:
The shield tunnel construction is applicable to all kinds of soft soil layers and ground consisting of hard rock, since successfully constructing in the tunnel of article one utilization shield method, thousands of various diameters, the shield tunnel of various uses have been built in countries in the world, recent two decades comes, the development and application of shield tunnel in various construction of tunnel maked rapid progress especially, and the diameter of its circular tunnel is also in continuous increase.The stability against floating in construction period tunnel is except relevant with objective factors such as the thickness of earth-fill cover in tunnel, groundwater table, soil properties, when the packing density of the grouting pressure of the synchronous grouting during also with set of tunneling construction, the material behavior of slurries, slurry intensity, structure void, the fltting speed of shield structure and tunnel excavation to surrounding soil to scratch subjective factors such as traverse degree relevant.
In the shield construction process of circular tunnel, " tunnel come-up " problem is the key construction node that is related to constructing tunnel quality and structural safety, because site operation working condition complexity, structure stress is indeterminate, therefore existing relevant design standard does not provide clear and definite regulation to this type of construction problem in the design stage yet, domestic also do not have the suitable theory of computation and structure computation method so far, thereby all adopt model test method research " tunnel come-up " problem at present.
At present, the model test apparatus of known research tunnel come-up mainly is that the simulation tunnel lining segment that plexiglas is made is placed in the rectangle or bulge that slurries are housed, and carries out the tunnel come-up rule of analog study entity tunnel lining segment in construction by observing the come-up situation of simulation tunnel lining segment in the slurries of different proportionings.Yet the known model test apparatus of this class has certain deficiency, and its major defect is: the container that slurries are housed is generally less, single material (as slurries) of planting of can only packing into, thus can't be in the peripheral state in the slurries of the soil body that is by simulation tunnel; And the test chamber that slurries are housed is generally open type or simple and easy closed, and its intensity is lower, can not the slurries of its inside be pressurizeed, thereby can't simulate the working condition of dark overburden layer; Diameter of simulation tunnel lining segment also smaller (generally being not more than 150mm), thereby result of the test in addition and the actual conditions error ratio of entity tunnel lining segment in construction are bigger.
The utility model content:
Technical problem to be solved in the utility model is to overcome the defective that existing tunnel come-up model test apparatus simulated condition is single, resultant error is bigger, a kind of tunnel come-up model test apparatus is provided, the multiple dielectric materials such as slurries, the soil body and water of can packing into as requested in its model clay case, and can be to internal pressurization, also magnifying diameter as far as possible of simulation tunnel lining segment simultaneously, thus make experimental rig can approach the actual come-up state in entity tunnel under the different working conditions better.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
A kind of tunnel come-up model test apparatus, include simulation tunnel lining segment, displacement meter, soil box for analogue and separation, described soil box for analogue is one can the pressurized hollow airtight container, its inside can the ccontaining soil body and water, described displacement meter is fixed in the inside of soil box for analogue, and described separation is positioned in the soil box for analogue, its upper and lower uncovered and inner can ccontaining slurries, described simulation tunnel lining segment is positioned in the separation, and it can change weight to simulate different tunnel entities.
The soil box for analogue of tunnel described in the utility model come-up model test apparatus includes top cover and casing; Described top cover is provided with pressurizing valve, pressure-relief valve, pressure meter and safety valve, and it covers hermetically and places described casing top; The bottom of described casing is positioned on the base, the top of its inwall is fixed with a displacement meter crossbeam, described displacement meter is fixed on this displacement meter crossbeam, the bottom of this cabinet wall is fixed with two in order to shelve the locating rack of described separation and simulation tunnel lining segment, the middle and upper part of its inwall is pasted with scale, and the top of this cabinet exterior is provided with two band valve Inlet and outlet waters and takes over and the adapter of two lead-out wires; The maximum pressure value that this soil box for analogue can pressurize is 0.5Mpa.The simulation tunnel lining segment of described tunnel come-up model test apparatus is a circle tube sealing container, maximum gauge reaches 750mm, its top is connected with the displacement meter leading-off rods, Inlet and outlet water is taken over and breather adapter, this displacement meter leading-off rods is corresponding with the displacement meter position on the displacement meter crossbeam, it is external that the data wire of this displacement meter is taken over outlet box by two lead-out wires on the casing, this Inlet and outlet water is taken over the bottom that passes to simulation tunnel lining segment inner chamber, this breather adapter passes to the top of simulation tunnel lining segment inner chamber, and two connect flexible pipe is connected with breather adapter the Inlet and outlet water adapter respectively with the two band valve Inlet and outlet waters adapters on described cabinet exterior top.
Compare with existing tunnel come-up model test apparatus, tunnel described in the utility model come-up model test apparatus has the simulation tunnel lining segment that maximum gauge reaches 750mm, reduces the error of result of the test, better the construction simulation actual conditions; In addition, separation inside in the described tunnel come-up model test apparatus can ccontaining slurries, soil box for analogue inside can the ccontaining soil body and water and can be forced into 0.5MPa, thereby can simulate better in the different soil bodys, different slurries, different depth earthing condition, the quick condition of entity tunnel lining segment in the complex working conditions such as especially dark earthing condition is for research tunnel come-up problem provides effective reference date.
Description of drawings:
Fig. 1 is a general structure schematic diagram of the present utility model.
Fig. 2 is a cap structure schematic diagram of the present utility model.
Fig. 3 is a casing facade structures schematic diagram of the present utility model.
Fig. 4 is a casing plane structure schematic diagram of the present utility model.
Fig. 5 is a simulation tunnel lining segment structural representation of the present utility model.
The specific embodiment:
Now the utility model is described in further detail in conjunction with the accompanying drawings and embodiments.
At first see also Fig. 1 structural representation of the present utility model, diagram tunnel come-up model test apparatus includes simulation tunnel lining segment 6, displacement meter 4, soil box for analogue and separation 5.Described soil box for analogue is one can the pressurized hollow airtight container, and its inside can the ccontaining soil body and water, and in order to the earthing condition of simulation different depth, the maximum pressure value that this soil box for analogue can pressurize is 0.5Mpa.Described separation 5 is the uncovered casing in a upper and lower, and it is positioned in the soil box for analogue and inside can ccontaining slurries.Described simulation tunnel lining segment 6 is an airtight container, be positioned in the slurries in the separation 5, it is to dwindle according to certain ratio according to actual condition to make, tunnel lining segment in order to the simulation entity, it can be by adding water to inside or draining changes weight, to simulate different tunnel entities.Described displacement meter 4 quantity have 2, and it is fixed in the inside of soil box for analogue, in order to the fluctuate situation of measure analog tunnel lining segment 6 in multiple dielectric material.
Described soil box for analogue includes top cover 1 and casing 2.See also Fig. 2 again, in the present embodiment, described top cover 1 is a crown body, and the lower edge is welded with big flange 7, and it covers on the opening that places described casing 2 tops hermetically.This is provided with 4 and takes over 9 above top cover 1, difference attachment security valve 10, pressure meter 11, pressurizing valve 12 and pressure-relief valve 13, described safety valve 10 is in the safe handling state in order to guarantee soil box for analogue, described pressure meter 11 is in order to measure analog soil case pressure inside value, and described pressurizing valve 12 and pressure-relief valve 13 pressurize and release in order to soil box for analogue inside is fed compressed air.
See also Fig. 3 and Fig. 4 again, in the present embodiment, described casing 2 is the hollow cylinder of a upper opening, and the week of this upper opening is along being welded with big flange 8, be combined bolt by big flange 7 with big flange 8 and be connected, top cover 1 and casing 2 have constituted the soil box for analogue of sealing that can bearing certain pressure.The bottom of described casing 2 is positioned over (see figure 1) on the base 3, and its lower left quarter is provided with the adapter of band sealing flange cover.One displacement meter crossbeam 17 is by the top of bolt in these casing 2 inwalls, and described two displacement meters about 4 each ground are fixed on this displacement meter crossbeam 17; The bottom of these casing 2 inwalls is welded with two locating racks 16, in order to shelve described separation 5 and simulation tunnel lining segment 6 (see figure 1)s, the middle and upper part of casing 2 inwalls is pasted with 2 scales 18, in order to measure in the soil box for analogue the ccontaining soil body and the amount of water, the top of these casing 2 outer walls is provided with two band valve Inlet and outlet waters and takes over 14 and two lead-out wires and take over 15.
See also Fig. 5 again, in the present embodiment, described simulation tunnel lining segment 6 is a circle tube sealing container, and inside can ccontaining water, and its profile is scaled according to the actual tunnel lining segment, and maximum gauge can reach 750mm.The top of this simulation tunnel lining segment 6 is connected with two displacement meter leading-off rods 19, Inlet and outlet water adapter 20 and breather adapter 21; The position of this two displacement meters leading-off rods 19 is corresponding respectively with two displacement meters 4 on the displacement meter crossbeam 17, so that this displacement meter 4 is aimed at displacement meter leading-off rods 19, make displacement meter 4 be in the range state, the data wire of displacement meter 4 is taken over 15 by two lead-out wires on the casing 2 and is drawn outside the casing 2; This Inlet and outlet water takes over 20 in order to water filling in simulation tunnel lining segment 6 with draw water, and the one end exposes to the top of simulation tunnel lining segment 6, and the other end passes to the bottom of simulation tunnel lining segment 6 inner chambers; This breather adapter 21 is in order to connecting simulation tunnel lining segment 6 inner chambers and atmosphere, to avoid to simulation tunnel lining segment 6 in water filling or formation air pressure or vacuum when drawing water; Take over 20 inside water fillings and draw water by Inlet and outlet water, thereby the weight that changes itself is to reach the purpose of simulating different tunnels entity; Two connect flexible pipe 22 is connected the two band valve Inlet and outlet waters adapters 14 on Inlet and outlet water adapter 20 and breather adapter 21 and described casing 2 outer wall tops respectively, thereby simulation tunnel lining segment 6 is communicated with external water source and source of the gas.
Before application tunnel described in the utility model come-up model test apparatus is tested, need to perform installation preparation in advance.The soil body of at first packing in casing 2 inside of locating rack 16 following scopes, then compartment 5 is positioned on the locating rack 16, simulation tunnel lining segment 6 is placed compartment 5 inside, be positioned on the locating rack 16, then in separation 5, pour into the open topped place of slurries to separation 5, so that simulation tunnel lining segment 6 immerses in the slurries, outside separation 5, continue to pack into the soil body to the height of test requirements document afterwards, and above the soil body, add water according to scale 18; Separation 5 is hung and pulls out casing 2 thereafter, and with connect flexible pipe 22 with the Inlet and outlet water on the simulation tunnel lining segment 6 take over 20, breather adapter 21 respectively with casing 2 on two band valve Inlet and outlet waters take over 14 and be connected; Displacement meter crossbeam 17 is installed and on displacement meter crossbeam 17, is fixed displacement meter 4 on the top of casing 2 inwalls subsequently, make the displacement meter leading-off rods 19 on the simulation tunnel lining segment 6 aim at displacement meter 4, make it to be in half range state; Be fastened on top cover 1 on the casing 2 at last and tight a bolt, thereby seal up soil box for analogue, feed compressed air according to test requirements document by the pressurizing valve on the top cover 1 12 then and pressurize.
When testing, take over 14, connect flexible pipe 22 and Inlet and outlet water and take over 20 to the inner chamber water filling of simulation tunnel lining segment 6 or draw water by band valve Inlet and outlet water, thereby change the weight of model tunnel lining segment 6 itself, the state that in multiple media such as slurries, the soil body and water, fluctuates by displacement meter 4 measurement model tunnel lining segments 6.
Use tunnel described in the utility model come-up model test apparatus and can simulate the quick condition of entity tunnel lining segment in complex working conditions such as the different soil bodys, different slurries, different depth earthing condition, for the research of tunnel come-up problem provides effective reference date.

Claims (7)

1, model test apparatus floats in a kind of tunnel, include simulation tunnel lining segment and displacement meter, it is characterized in that: this device also includes soil box for analogue and separation, described soil box for analogue is one can the pressurized hollow airtight container, its inside can the ccontaining soil body and water, described displacement meter is fixed in the inside of soil box for analogue, described separation is positioned in the soil box for analogue, its upper and lower uncovered and inner can ccontaining slurries, described simulation tunnel lining segment is positioned in the separation, and it can change weight to simulate different tunnel entities.
2, model test apparatus floats in tunnel according to claim 1, it is characterized in that: described soil box for analogue includes top cover and casing, described top cover is provided with pressurizing valve and pressure-relief valve, it covers hermetically and places described casing top, the top of described cabinet wall is fixed with a displacement meter crossbeam, its underpart is fixed with two in order to shelve the locating rack of described separation and simulation tunnel lining segment, described displacement meter is fixed on this displacement meter crossbeam, and the top of this cabinet exterior is provided with two band valve Inlet and outlet waters and takes over and the adapter of two lead-out wires.
3, tunnel according to claim 2 come-up model test apparatus, it is characterized in that: described simulation tunnel lining segment is an airtight container, its top is connected with the displacement meter leading-off rods, Inlet and outlet water is taken over and breather adapter, this displacement meter leading-off rods is corresponding with the displacement meter position on the displacement meter crossbeam, it is external that the data wire of this displacement meter is taken over outlet box by two lead-out wires on the casing, this Inlet and outlet water is taken over the bottom that passes to simulation tunnel lining segment inner chamber, this breather adapter passes to the top of simulation tunnel lining segment inner chamber, and two connect flexible pipe is connected with breather adapter the Inlet and outlet water adapter respectively with the two band valve Inlet and outlet waters adapters on described cabinet exterior top.
4, according to claim 1,2 or 3 described tunnel come-up model test apparatus, it is characterized in that: described simulation tunnel lining segment is a cylindrical shape, and its maximum gauge reaches 750mm.
5, come-up model test apparatus in tunnel according to claim 2 is characterized in that: also be provided with pressure meter and safety valve on the described top cover.
6, tunnel according to claim 2 come-up model test apparatus, it is characterized in that: the bottom of described casing is positioned on the base, and the middle and upper part of its inwall is pasted with scale.
7, tunnel according to claim 1 and 2 come-up model test apparatus, it is characterized in that: the maximum pressure value that described soil box for analogue can pressurize is 0.5Mpa.
CNU2008201520075U 2008-08-15 2008-08-15 Tunnel upward floating model trial apparatus Expired - Fee Related CN201241707Y (en)

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Application Number Priority Date Filing Date Title
CNU2008201520075U CN201241707Y (en) 2008-08-15 2008-08-15 Tunnel upward floating model trial apparatus

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Application Number Priority Date Filing Date Title
CNU2008201520075U CN201241707Y (en) 2008-08-15 2008-08-15 Tunnel upward floating model trial apparatus

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103000068A (en) * 2012-08-28 2013-03-27 浙江工业大学 Tunnel construction process simulating test method
CN104677664A (en) * 2015-02-12 2015-06-03 上海交通大学 Model test device of shield tunnel uplifting mechanism
CN104964836A (en) * 2015-05-26 2015-10-07 上海交通大学 Model test apparatus and method of simulating shield tunnel anti-buoyancy
CN105604577A (en) * 2015-12-29 2016-05-25 上海隧道工程有限公司 Floating-up control device suitable for quasi-rectangular shield tunnel
CN109974924A (en) * 2019-03-15 2019-07-05 上海隧道工程有限公司 Shield shield tail simultaneous grouting slurry buoyancy measuring device and its measurement method
CN110646164A (en) * 2019-10-18 2020-01-03 浙江科技学院 Experimental device for simulation shield tunnel section of jurisdiction come-up process
CN110657943A (en) * 2019-10-18 2020-01-07 浙江科技学院 Experimental device for simulating shield tunnel segment floating
CN110702298A (en) * 2019-10-18 2020-01-17 浙江科技学院 Experimental device for buoyancy measurement model of shield tunnel segment

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103000068B (en) * 2012-08-28 2014-11-12 浙江工业大学 Tunnel construction process simulating test method
CN103000068A (en) * 2012-08-28 2013-03-27 浙江工业大学 Tunnel construction process simulating test method
CN104677664A (en) * 2015-02-12 2015-06-03 上海交通大学 Model test device of shield tunnel uplifting mechanism
CN104677664B (en) * 2015-02-12 2017-06-13 上海交通大学 The model test apparatus of shield tunnel floating mechanism
CN104964836A (en) * 2015-05-26 2015-10-07 上海交通大学 Model test apparatus and method of simulating shield tunnel anti-buoyancy
CN105604577A (en) * 2015-12-29 2016-05-25 上海隧道工程有限公司 Floating-up control device suitable for quasi-rectangular shield tunnel
CN109974924B (en) * 2019-03-15 2021-08-06 上海隧道工程有限公司 Shield tail synchronous grouting slurry buoyancy measuring device and method
CN109974924A (en) * 2019-03-15 2019-07-05 上海隧道工程有限公司 Shield shield tail simultaneous grouting slurry buoyancy measuring device and its measurement method
CN110646164A (en) * 2019-10-18 2020-01-03 浙江科技学院 Experimental device for simulation shield tunnel section of jurisdiction come-up process
CN110702298A (en) * 2019-10-18 2020-01-17 浙江科技学院 Experimental device for buoyancy measurement model of shield tunnel segment
CN110657943A (en) * 2019-10-18 2020-01-07 浙江科技学院 Experimental device for simulating shield tunnel segment floating
CN110646164B (en) * 2019-10-18 2021-09-14 浙江科技学院 Experimental device for simulation shield tunnel section of jurisdiction come-up process
CN110657943B (en) * 2019-10-18 2021-09-28 浙江科技学院 Experimental device for simulating shield tunnel segment floating
CN110702298B (en) * 2019-10-18 2021-11-30 浙江科技学院 Experimental device for buoyancy measurement model of shield tunnel segment

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090520

Termination date: 20090915