CN204570730U - A kind of damping energy-dissipating device for Joints in Immersed Tunnel - Google Patents
A kind of damping energy-dissipating device for Joints in Immersed Tunnel Download PDFInfo
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- CN204570730U CN204570730U CN201520116635.8U CN201520116635U CN204570730U CN 204570730 U CN204570730 U CN 204570730U CN 201520116635 U CN201520116635 U CN 201520116635U CN 204570730 U CN204570730 U CN 204570730U
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Abstract
The utility model relates to a kind of damping energy-dissipating device for Joints in Immersed Tunnel, this device to be installed in immersed tube tunnel and to be directly connected with immersed tube tunnel inner side main body structure, described device comprises several damping power consumption group, described each damping power consumption group is made up of 2 dampings power consumption modules, and 2 described dampings power consumption modules are arranged symmetrically in tunnel cross section; Described damping power consumption module crosses over immersed tube tunnel tube coupling joint, comprises damping and energy-consumption device and two connectors, and its both ends are saved immersed tube tunnel agent structure with two of the described joint of composition by two connectors and are connected by described damping and energy-consumption device.Compared with prior art, the utility model is easy for installation, replaceable; Under geological process, absorb or dissipation seismic energy, improve tube coupling joint Hysteresis Behavior, ensure the safety of Joints in Immersed Tunnel.
Description
Technical field
The utility model relates to a kind of damping energy-dissipating device, especially relates to a kind of damping energy-dissipating device be applied in immersed tube tunnel tube coupling joint.
Background technology
Tunnel is generally considered to be a kind of structure of good seismic performance, and compared with earth construction, the anti-seismic performance of underground structure is stronger, and its shock resistance increases to some extent with the increase of buried depth.Therefore, in the past, generally underground structure does not carry out seismic design.But tunnel earthquake shows in recent decades, the understanding that underground structure does not carry out seismic design is unilateral, especially the Osaka-Kobe earthquake of nineteen ninety-five, has overthrown the final conclusion that underground structure shock resistance that brainstrust thinks is strong, safe.
For immersed tube tunnel, due to importance and the underwater particularity of its engineering, once be destroyed, catastrophic consequence and immeasurable loss will be caused, and repair difficulty.Therefore, how to ensure seismic seeurity and the economy of immersed tube tunnel, become one of difficult problem urgently to be resolved hurrily.
Immersed tube tunnel tube coupling joint is the connecting elements between immersed tube pipeline section.Under immersed tube tunnel bears the impact of the factor such as earthquake or differential settlement, because immersed tube tunnel tube coupling joint stiffness compared with normal pipeline section is much smaller, the primary deformable of whole immersed tube tunnel all focuses on joint area, makes joint become the focus of force and deformation.Thus, tube coupling joint is position the weakest in whole immersed tube tunnel, is necessary to analyze and research to its mechanical property under geological process.In general, in immersed tube tunnel tube coupling joint, the relative joint open that prestressed cable carrys out limiting joint can be buried underground, to reach the object that limiting joint opens relatively under geological process; And at present in tunnel structure, joint member does not enter plasticity work usually, the recovery along with distortion discharges, therefore under geological process by the elastic strain energy namely accumulated in dissipative member.Tube coupling joint can not dissipate or absorb the energy of Seismic input, thus there is very large risk.
In order to reduce the earthquake response of immersed tube tunnel tube coupling joint, avoiding joint to produce and destroy and lost efficacy, being necessary to arrange damping energy-dissipating device within a fitting.By plastic strain or the viscous deformation of damping energy-dissipating device, control joint distortion amount or rate of strain, thus to reach the object of damping control shake.
Utility model content
The purpose of this utility model be exactly in order to overcome above-mentioned prior art exist defect and a kind of damping energy-dissipating device for Joints in Immersed Tunnel is provided.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of damping energy-dissipating device for Joints in Immersed Tunnel, it is characterized in that, described device to be installed in immersed tube tunnel and to be directly connected with immersed tube tunnel inner side main body structure, described device comprises several damping power consumption group, described each damping power consumption group is made up of 2 dampings power consumption modules, and 2 described dampings power consumption modules are arranged symmetrically in tunnel cross section;
Described damping power consumption module crosses over immersed tube tunnel tube coupling joint, comprises damping and energy-consumption device and two connectors, and its both ends are saved immersed tube tunnel agent structure with two of the described joint of composition by two connectors and are connected by described damping and energy-consumption device;
The installation direction parallel (Fig. 2) of described damping and energy-consumption device or vertical (Fig. 1) are in tunnel axis direction, and the length of described damping and energy-consumption device is greater than 2 meters and axial rigidity is at least 2 times of Joints in Immersed Tunnel axial rigidity.
Described damping power consumption module is arranged in symmetrically on immersed tube tunnel both sides or roof and floor in tunnel cross section.
Described damping and energy-consumption device is active shock or passive energy dissipation device.
Described damping and energy-consumption device is viscous damper, rubber cushion assembly or mild steel damper.
Described mild steel damper is specially: interlude section is cross steel plate, material be yield strength not higher than the low surrender steel of 200MPa, yield displacement is 7mm; Surface covers sealing by steel plate, and its thickness is not less than 2cm; The steel at both ends are Q345.
Described connector is be embedded in the steel structural embedded parts in immersed tube tunnel agent structure, connects two connector lines of centres of same damping and energy-consumption device perpendicular to joint plane.The allowable strain value of described connector is much smaller than the normal deformation value of damping and energy-consumption device.
Described steel structural embedded parts is a steel plate, and its pre-buried mode is specially: welded reinforcement on steel plate, and steel bar preassembling is embedded in concrete, and described steel plate external surface can be concordant with concrete surface.
Connected mode between described damping and energy-consumption device and connector comprises and just connecing with hinged.
Described just connects as welding.
Compared with prior art, the utility model has the following advantages and beneficial effect:
This device is easy for installation, replaceable, and device damping power consumption is theoretical ripe.Under geological process, immersed tube tunnel tube coupling joint can produce relative displacement, and this damping energy-dissipating device can be out of shape along with the distortion of joint, thus absorbs or dissipation seismic energy, improves tube coupling joint Hysteresis Behavior, strengthens joint and is suffering the safety under geological process.Meanwhile, the installation of this device, can improve tube coupling joint stiffness, makes joint suffer geological process and the possibility that occurs relatively to open reduces greatly, thus improves joint watertightness, ensure the safety of Joints in Immersed Tunnel.
Accompanying drawing explanation
Fig. 1 is the elevation of the utility model perpendicular to the axial mounting design of immersed tube tunnel;
Fig. 2 is the elevation that the utility model is parallel to the axial mounting design of immersed tube tunnel;
Fig. 3 is the lateral view that the utility model is parallel to the axial mounting design of immersed tube tunnel;
Fig. 4 is the top view that the utility model is parallel to the axial mounting design of immersed tube tunnel;
Fig. 5 is the damping and energy-consumption device structural representation used in the present embodiment;
Fig. 6 is the damping and energy-consumption device interlude sectional view used in the present embodiment;
Fig. 7 is unit simulation test result figure (geometry guide: 1/10) of the present utility model;
In figure, 1 is immersed tube tunnel tube coupling agent structure, 2 be damping power consumption module connector, 3 is damping and energy-consumption device, and 4 is immersed tube tunnel tube coupling joint area, and 31 is the interlude of damping and energy-consumption device, and 32 is the end of damping and energy-consumption device.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As shown in Figure 1, illustrate the elevation of the design of a damping power consumption group in the utility model immersed tube tunnel damping energy-dissipating device, being installed on the two side in tunnel of two damping and energy-consumption device symmetries of this damping power consumption group.Immersed tube tunnel tube coupling agent structure 1 is as shown in Figure 1 the immersed tube tunnel structure after simplifying, and its section is rectangle, and does not arrange mid-board.Described immersed tube tunnel Main Structural Section form is not limited to the shape shown in figure below.
The installation of damping energy-dissipating device of the present utility model is after immersed tube tunnel tube coupling has docked, before interior decoration.First installation connecting element 2, connector is a steel plate, welded reinforcement on steel plate, and steel bar preassembling is embedded in concrete, the quantity of its reinforcing bar, and length and arrangement should according to calculating adjustment, and meanwhile, steel plate external surface is concordant with concrete surface.Described connector form is not limited to graphic form, its objective is in order to fixing shock-absorbing limiting device.Because connector 2 is embedded on concrete in advance, by the mode of welding, damping and energy-consumption device and this built-in connection are connected during actual installation; As shown in fig. 1, damping and energy-consumption device 3 moves towards along tunnel to arrange, its two ends are connected with concrete tube coupling by connector.
As shown in Figure 5 and Figure 6, the joint damping and energy-consumption device described in this example is mild steel damper, and its interlude 31 section is cross steel plate, material is low surrender steel, its yield strength is not higher than 200MPa, and yield displacement is 7mm, and its periphery retrains its lateral deformation by concrete; Apparatus surface covers sealing by steel plate, and its thickness is not less than 2cm; Device end 32 steel are general Q345 steel.Described joint damping energy-dissipating device, its design axial rigidity is 2 times of this routine center tap.
As shown in Figure 7, be the joint damping energy-dissipating device test result figure described in this example, this test is reduced scale test, and geometry guide is 1:10.Bearing under identical distortion, after arranging damping energy-dissipating device, joint bearing capacity and hysteresis circle all increase, and the damping energy-dissipating property of joint is obvious.
To be installed complete after, this damping energy-dissipating device wouldn't work.When an earthquake occurs, immersed tube tunnel tube coupling joint can produce distortion, and now the damping energy-dissipating device of joint is started working.When joint distortion is less, damping and energy-consumption device is in elastic deformation, which increases the rigidity of joint, and what limit joint opens distortion relatively; When joint distortion is larger, damping and energy-consumption device is in elastic-plastic behavior, it passes through the energy of yield deformation or viscous deformation storage or dissipation seismic deformation, reduces joint because of the response under seismic load, thus the object playing damping power consumption and prevent joint from destroying because of earthquake.When being subject under severe earthquake action, the damping and energy-consumption device distortion of joint is comparatively large, when it no longer plays a role, can replace it.During replacement, damping and energy-consumption device is taken out, newer damping and energy-consumption device is installed on connector.
Above-mentioned is can understand for ease of those skilled in the art and apply the utility model to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other pin-connected panel tunnel embodiments and need not through performing creative labour.Therefore, the utility model is not limited to embodiment here, and those skilled in the art are according to announcement of the present utility model, and the improvement made for the utility model and amendment all should within protection domains of the present utility model.
Claims (10)
1. the damping energy-dissipating device for Joints in Immersed Tunnel, it is characterized in that, described device to be installed in immersed tube tunnel and to be directly connected with immersed tube tunnel inner side main body structure, described device comprises several damping power consumption group, each damping power consumption group is made up of 2 dampings power consumption modules, and 2 described dampings power consumption modules are arranged symmetrically in tunnel cross section;
Described damping power consumption module crosses over immersed tube tunnel tube coupling joint, comprises damping and energy-consumption device and two connectors, and its both ends are saved immersed tube tunnel agent structure with two of the described joint of composition by two connectors and are connected by described damping and energy-consumption device.
2. a kind of damping energy-dissipating device for Joints in Immersed Tunnel according to claim 1, it is characterized in that, the installation direction of described damping and energy-consumption device is parallel or perpendicular to tunnel axis direction, and the length of described damping and energy-consumption device is greater than 2 meters and axial rigidity is at least 2 times of Joints in Immersed Tunnel axial rigidity.
3. a kind of damping energy-dissipating device for Joints in Immersed Tunnel according to claim 1, is characterized in that, described damping power consumption module is arranged in symmetrically on immersed tube tunnel both sides or roof and floor in tunnel cross section.
4. a kind of damping energy-dissipating device for Joints in Immersed Tunnel according to claim 1 and 2, is characterized in that, described damping and energy-consumption device is active shock or passive energy dissipation device.
5. a kind of damping energy-dissipating device for Joints in Immersed Tunnel according to claim 4, it is characterized in that, described damping and energy-consumption device is viscous damper, rubber cushion assembly or mild steel damper.
6. a kind of damping energy-dissipating device for Joints in Immersed Tunnel according to claim 5, it is characterized in that, described mild steel damper is specially: interlude section is cross steel plate, and surface covers sealing by steel plate, and both ends are made by steel Q345.
7. a kind of damping energy-dissipating device for Joints in Immersed Tunnel according to claim 1, it is characterized in that, described connector is be embedded in the steel structural embedded parts in immersed tube tunnel agent structure, connects two connector lines of centres of same damping and energy-consumption device perpendicular to joint plane.
8. a kind of damping energy-dissipating device for Joints in Immersed Tunnel according to claim 7, it is characterized in that, described steel structural embedded parts is a steel plate, this steel plate welds the reinforcing bar be embedded in advance in concrete, and described steel plate external surface is concordant with concrete surface.
9. a kind of damping energy-dissipating device for Joints in Immersed Tunnel according to claim 1, is characterized in that, the connected mode between described damping and energy-consumption device and connector comprises and just connecing with hinged.
10. a kind of damping energy-dissipating device for Joints in Immersed Tunnel according to claim 9, is characterized in that, described just connects as welding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520116635.8U CN204570730U (en) | 2015-02-26 | 2015-02-26 | A kind of damping energy-dissipating device for Joints in Immersed Tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520116635.8U CN204570730U (en) | 2015-02-26 | 2015-02-26 | A kind of damping energy-dissipating device for Joints in Immersed Tunnel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109440820A (en) * | 2018-12-29 | 2019-03-08 | 上海洁鹿环保科技有限公司 | It is a kind of to fill out sea or the internal immersed tube for being filled with construction waste of bridge |
| CN111395396A (en) * | 2020-03-20 | 2020-07-10 | 华侨大学 | Sinking pipe resisting tide load and construction method thereof |
| CN112031815A (en) * | 2020-09-22 | 2020-12-04 | 广州大学 | Shock isolation device for connecting left tunnel and right tunnel |
| CN113323670A (en) * | 2021-05-28 | 2021-08-31 | 广州大学 | Immersed tube tunnel suitable for crossing geological fault and construction process thereof |
-
2015
- 2015-02-26 CN CN201520116635.8U patent/CN204570730U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109440820A (en) * | 2018-12-29 | 2019-03-08 | 上海洁鹿环保科技有限公司 | It is a kind of to fill out sea or the internal immersed tube for being filled with construction waste of bridge |
| CN111395396A (en) * | 2020-03-20 | 2020-07-10 | 华侨大学 | Sinking pipe resisting tide load and construction method thereof |
| CN112031815A (en) * | 2020-09-22 | 2020-12-04 | 广州大学 | Shock isolation device for connecting left tunnel and right tunnel |
| CN112031815B (en) * | 2020-09-22 | 2022-04-26 | 广州大学 | Shock isolation device for connecting left tunnel and right tunnel |
| CN113323670A (en) * | 2021-05-28 | 2021-08-31 | 广州大学 | Immersed tube tunnel suitable for crossing geological fault and construction process thereof |
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