CN111962569B - Lower shock isolation support for tunnel shock isolation - Google Patents

Lower shock isolation support for tunnel shock isolation Download PDF

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CN111962569B
CN111962569B CN202010954865.7A CN202010954865A CN111962569B CN 111962569 B CN111962569 B CN 111962569B CN 202010954865 A CN202010954865 A CN 202010954865A CN 111962569 B CN111962569 B CN 111962569B
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support
tunnel
bearing
plate
vibration isolation
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CN111962569A (en
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沈朝勇
黄襄云
陈洋洋
谭平
马玉宏
陈建秋
吴迪
周福霖
张建华
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Guangzhou University
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/40—Miscellaneous comprising stabilising elements

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  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
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  • Geochemistry & Mineralogy (AREA)
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  • Environmental & Geological Engineering (AREA)
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  • General Engineering & Computer Science (AREA)
  • Vibration Prevention Devices (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

本发明涉及地下隧道工程技术领域，具体涉及一种用于隧道隔震的下部隔震支座，包括相向设置的两组支撑支座及连接两组支撑支座的支座连接件，所述支撑支座包括依次连接的滑轨系统、竖向滑动系统、隔震橡胶支座，所述滑轨系统包括贴合隧道的顶部弧形板及轨道系统，由于隧道为圆形断面，在非地震情况下，竖向荷载通过滑轨系统单独向下传递时，会产生斜向力，使底部的隔震橡胶支座发生水平偏移，而支座连接件将左、右两侧的支撑支座拉结在一起，使整体支座具有较好的稳定性和较大的承载能力；通过设置竖向滑动系统，在遭受竖向地震时，隧道在竖直方向上可发生相对固定地面的微小运动，减轻竖向地震对隧道的影响。

Figure 202010954865

The invention relates to the technical field of underground tunnel engineering, in particular to a lower vibration isolation bearing for tunnel vibration isolation, comprising two sets of support bearings arranged opposite to each other and a bearing connector connecting the two sets of support bearings. The support includes a sliding rail system, a vertical sliding system, and a shock-isolating rubber bearing that are connected in sequence. The sliding rail system includes a top arc plate and a track system that fit the tunnel. When the vertical load is transmitted downward through the slide rail system alone, an oblique force will be generated, causing the bottom shock-isolating rubber bearing to shift horizontally, and the bearing connector will pull the supporting bearings on the left and right sides. Combined together, the overall support has better stability and greater bearing capacity; by setting up a vertical sliding system, when subjected to a vertical earthquake, the tunnel can move slightly relative to the fixed ground in the vertical direction. Mitigate the impact of vertical earthquakes on tunnels.

Figure 202010954865

Description

Lower shock isolation support for tunnel shock isolation
Technical Field
The invention relates to the technical field of underground tunnel engineering, in particular to a lower shock-isolating support which has strong bearing capacity and is used for isolating shock of a tunnel.
Background
The laminated rubber shock insulation technology has an important effect on reducing the damage of an earthquake to a building structure and a bridge structure, has good horizontal deformation capacity and energy consumption characteristics, and also has good compressive rigidity, so that the laminated rubber shock insulation technology can be applied to a building shock insulation layer and a bridge shock insulation layer to effectively reduce the damage of the earthquake to the building and the bridge. For underground tunnel engineering structures such as underground circular tunnels, circular pipelines and the like, on one hand, the vertical load is large, on the other hand, the shapes are irregular relative to the seismic isolation projects of buildings or bridges, the whole cross section is generally circular, so that the vertical force transmission is irregular, and when the seismic isolation technology is adopted in the underground engineering projects, the seismic isolation support is required to have large bearing capacity, high stability, adaptability (adapting to the irregular shapes) and good seismic isolation effect. In order to satisfy the underground tunnel engineering shock insulation structures such as underground circular tunnels and circular pipelines, a novel shock insulation support which simultaneously satisfies the conditions of large bearing capacity, small horizontal rigidity and good stability under the action of common loads and can adapt to the structural characteristics of circular sections is needed.
Disclosure of Invention
The invention aims to provide a lower shock insulation support for tunnel shock insulation, which can bear larger vertical load under the action of common load, has larger stability, can adapt to the shape of a circular track, and can effectively play a role in reducing the earthquake load on the tunnel during horizontal earthquake.
The invention realizes the purpose by the following technical scheme:
the utility model provides a lower part isolation bearing for tunnel shock insulation, includes two sets of support supports of support connecting piece and setting in opposite directions, support the support and include isolation rubber support, set up vertical sliding system on isolation rubber support, set up the slide rail system on vertical sliding system, the slide rail system is including laminating the tunnel and with tunnel connection's top arc and with the unanimous track system of the curved surface of top arc, the both ends of support connecting piece are connected with the side of the vertical sliding system of both sides respectively.
Further, the slide rail system further comprises a bottom arc plate, the bottom arc plate is parallel to the top arc plate, and the top of the vertical sliding system is provided with a curved surface matched with the bottom arc plate in structure.
Further, the support still includes interim fixed system, the one end of interim fixed system is connected with vertical sliding system's side, and the other end is provided with the arc connecting plate in laminating tunnel.
Further, the temporary fixing system comprises a bottom plate connected with the side face of the vertical sliding system and a connecting rod for connecting the bottom plate and the arc-shaped connecting plate.
Further, the connecting rod is designed into a wedge-shaped structure.
Furthermore, the vertical sliding system comprises an outer sleeve mechanism and an inner sleeve mechanism which are nested with each other and can move vertically relatively, the top of the outer sleeve mechanism is connected with the bottom of the sliding rail system, the support connecting piece is connected with the side face of the outer sleeve mechanism, and the shock insulation rubber support is arranged at the bottom of the inner sleeve mechanism.
Further, the outer sleeve mechanism comprises an outer sleeve and a first lower connecting plate, the inner sleeve mechanism comprises an inner sleeve and a second lower connecting plate, the bottom of the first lower connecting plate is connected with the top of the second lower connecting plate, and the bottom of the second lower connecting plate is connected with the shock insulation rubber support.
Furthermore, the support connecting piece comprises a cross beam and support lugs extending from the end part of the cross beam to two sides, and the support connecting piece is fixedly connected with the vertical sliding system through the support lugs.
Furthermore, the shock insulation rubber support is any one of a natural shock insulation rubber support, a lead core shock insulation rubber support, a high-damping shock insulation rubber support, an elastic annular plate support or a fixed sliding plate support.
Furthermore, the shock insulation rubber support is circular, square or regular polygon.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention relates to a lower part shock insulation support for tunnel shock insulation, which comprises two groups of support supports arranged oppositely and a support connecting piece for connecting the two groups of support supports, wherein the support supports comprise slide rail systems attached to a tunnel, when a non-earthquake happens, namely the tunnel runs at ordinary times, the tunnel transfers vertical load to the support supports on the left side and the right side, and finally transfers the vertical load to the fixed ground below.
2. According to the lower shock-insulation support for tunnel shock insulation, the vertical sliding system is arranged, so that when vertical earthquake occurs, the tunnel can be allowed to generate tiny movement relative to the fixed ground in the vertical direction, and the influence of the vertical earthquake on the tunnel is reduced.
3. According to the lower shock-insulation support for the tunnel shock insulation, the temporary fixing system attached to the bottom of the tunnel is arranged on the support, so that on one hand, the safety of the tunnel in normal operation can be guaranteed, and on the other hand, the temporary fixing system is provided with the weakening section, so that the weakening section can be damaged as expected when the tunnel is subjected to a large earthquake, the tunnel can roll freely, and the influence of the earthquake is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a lower seismic isolation bearing for tunnel seismic isolation according to the present invention.
Fig. 2 is a schematic structural view of the slide rail system of the present invention.
Fig. 3 is a schematic structural view of the temporary fixing system of the present invention.
Fig. 4 is a schematic structural view of the stand connecting member of the present invention.
Fig. 5 is a schematic structural view of an outer sleeve mechanism in the present invention.
FIG. 6 is a schematic structural diagram of an inner barrel mechanism according to the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
Example 1.
As shown in fig. 1-6, the present embodiment provides a lower seismic isolation support for tunnel seismic isolation, which includes a support connector 5 and two sets of support supports arranged in opposite directions, where the support supports include a seismic isolation rubber support 10(11), a vertical sliding system 14(15) arranged on the seismic isolation rubber support 10(11), and a sliding rail system 1(2) arranged on the vertical sliding system, where the sliding rail system 1(2) includes a top arc plate 11(21) attached to and connected to a tunnel, and a rail system 12(22) consistent with the curved surface of the top arc plate 11(21), and two ends of the support connector 5 are respectively connected to the side surfaces of the vertical sliding systems 14(15) on two sides.
The invention relates to a lower shock-insulation support for tunnel shock insulation, a slide rail system 1(2) is directly connected with a tunnel, a shock-insulation rubber support 10(11) is connected with a fixed ground, when the tunnel is not in earthquake, namely in the process of ordinary operation of the tunnel, the tunnel sequentially transmits vertical load to the slide rail systems 1(2) at the left side and the right side, a vertical sliding system 14(15), the shock-insulation rubber support 10(11) and finally transmits the vertical load to the fixed ground below, because the tunnel has a circular section, when the vertical load is independently transmitted downwards through the slide rail systems 1(2) at the left side and the right side, an oblique force is generated, the shock-insulation rubber support 10(11) at the bottom is subjected to constant horizontal deviation, and a support connecting piece 5 can pull the shock-insulation rubber supports 10(11) at the left side and the right side together, so that the whole support has better stability and larger bearing capacity, and meanwhile, through the arrangement of the vertical sliding system 14(15), when vertical earthquake occurs, the tunnel can be allowed to move slightly relative to the fixed ground in the vertical direction, and the influence of the vertical earthquake on the tunnel is reduced.
The sliding rail system 1(2) further comprises a bottom arc-shaped plate 13(23), the bottom arc-shaped plate 13(23) is parallel to the top arc-shaped plate 11(21), and the top of the vertical sliding system 14(15) is provided with a curved surface matched with the structure of the bottom arc-shaped plate 13(23), so that the structure is simple and convenient to mount.
The supporting supports further comprise a temporary fixing system 3(4), one end of the temporary fixing system 3(4) is connected with the side face of the vertical sliding system 14(15), the other end of the temporary fixing system is provided with an arc-shaped connecting plate 31(41) which is attached to the tunnel and connected with the bottom of the tunnel, and in the ordinary operation process of the tunnel, the temporary fixing system 3(4) fixes the supporting supports on the left side and the right side with the bottom of the tunnel, so that the safety of the tunnel in the ordinary operation process is guaranteed.
The temporary fixing system 3(4) comprises a bottom plate 32(42) connected with the side surface of the vertical sliding system 14(15), a connecting rod 33(43) connected with the bottom plate 32(42) and the arc-shaped connecting plate 31(41), the connecting rod 33(43) is designed into a wedge-shaped structure, when the earthquake energy reaches a certain degree, the connecting rod 33(43) in the temporary fixing system 3(4) is broken at the weak section of the wedge-shaped structure, the annular constraint between the tunnel and the temporary fixing system 3(4) is released, and the earthquake load energy of the tunnel is further reduced.
Wherein the vertical sliding system 14(15) comprises an outer sleeve mechanism 6(7) and an inner sleeve mechanism 8(9) which are nested with each other and can move vertically relatively, the outer sleeve mechanism 6(7) comprises an outer sleeve 61(71) and a first lower connecting plate 62(72), the inner sleeve mechanism 8(9) comprises an inner sleeve 81(91) and a second lower connecting plate 82(92), the top of the outer sleeve 61(71) is connected with a bottom arc plate 13(23), two ends of the support connecting piece 5 are respectively connected with the side surfaces of the outer sleeve 61(71), the bottom of the first lower connecting plate 62(72) is connected with the top of the second lower connecting plate 82(92), the bottom of the second lower connecting plate 82(92) is connected with a vibration isolation rubber support 10(11), and when a vertical earthquake occurs, the tunnel can be allowed to generate a micro-motion relative to the fixed ground in the vertical direction, and the influence of vertical earthquake on the tunnel is reduced.
The support connector 5 comprises a cross beam 51 and support lugs 52 extending from the ends of the cross beam 51 to two sides, and the support connector 5 is fixedly connected with the outer sleeve 61(62) through the support lugs 52.
The shock insulation rubber support 10(11) is any one of a natural shock insulation rubber support, a lead core shock insulation rubber support, a high-damping shock insulation rubber support, an elastic annular plate support or a fixed sliding plate support, and the shape of the shock insulation rubber support can be circular, square or regular polygon.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (3)

1.一种用于隧道隔震的下部隔震支座，其特征在于，包括支座连接件及相向设置的两组支撑支座，所述支撑支座包括隔震橡胶支座、设置在隔震橡胶支座上的竖向滑动系统、设置在竖向滑动系统上的滑轨系统，所述滑轨系统包括贴合隧道并与隧道连接的顶部弧形板及与顶部弧形板的曲面一致的轨道系统，所述支座连接件的两端分别与两侧的竖向滑动系统的侧面相连接，所述滑轨系统还包括底部弧形板，所述底部弧形板与顶部弧形板相平行，所述竖向滑动系统的顶部设置有与底部弧形板结构相匹配的曲面，所述支撑支座还包括临时固定系统，所述临时固定系统的一端与竖向滑动系统的侧面连接，另一端设置有与隧道贴合的弧形连接板，所述临时固定系统包括与竖向滑动系统的侧面连接的底板及连接底板和弧形连接板的连接杆，所述连接杆设计为楔形结构，所述竖向滑动系统包括相互嵌套且可相对竖向运动的外套筒机构和内筒机构，所述外套筒机构的顶部与滑轨系统的底部连接，所述支座连接件与外套筒机构的侧面连接，所述隔震橡胶支座设置在内筒机构的底部，所述外套筒机构包括外套筒和第一下连接板，所述内筒机构包括内筒和第二下连接板，所述第一下连接板的底部与第二下连接板的顶部相连，所述第二下连接板的底部与隔震橡胶支座相连，所述支座连接件包括横梁及由横梁端部向两侧延伸的支耳，所述支座连接件与竖向滑动系统通过支耳固定连接。1. a lower vibration isolation bearing for tunnel vibration isolation, is characterized in that, comprises a bearing connector and two groups of support bearings that are arranged oppositely, and the support bearings comprise a vibration isolation rubber bearing, are arranged in the isolation The vertical sliding system on the vibration rubber bearing and the sliding rail system arranged on the vertical sliding system, the sliding rail system includes a top arc plate which is fitted to the tunnel and connected with the tunnel, and a curved surface consistent with the top arc plate The rail system, the two ends of the support connector are respectively connected with the sides of the vertical sliding system on both sides, the sliding rail system also includes a bottom arc plate, the bottom arc plate and the top arc plate In parallel, the top of the vertical sliding system is provided with a curved surface that matches the bottom arc-shaped plate structure, and the supporting support further includes a temporary fixing system, one end of the temporary fixing system is connected with the side surface of the vertical sliding system , the other end is provided with an arc-shaped connecting plate that fits with the tunnel, the temporary fixing system includes a bottom plate connected to the side of the vertical sliding system and a connecting rod connecting the bottom plate and the arc-shaped connecting plate, and the connecting rod is designed as a wedge-shaped structure, the vertical sliding system includes an outer sleeve mechanism and an inner barrel mechanism that are nested with each other and can move relatively vertically, the top of the outer sleeve mechanism is connected with the bottom of the slide rail system, and the support connector Connected with the side of the outer sleeve mechanism, the shock-isolating rubber support is arranged at the bottom of the inner cylinder mechanism, the outer sleeve mechanism includes an outer sleeve and a first lower connecting plate, and the inner cylinder mechanism includes an inner cylinder and a lower connecting plate. The second lower connecting plate, the bottom of the first lower connecting plate is connected with the top of the second lower connecting plate, the bottom of the second lower connecting plate is connected with the vibration isolation rubber bearing, and the bearing connecting piece includes a beam And the support lugs extending from the end of the beam to both sides, the support connecting piece and the vertical sliding system are fixedly connected through the support lugs. 2.如权利要求1所述的用于隧道隔震的下部隔震支座，其特征在于，所述隔震橡胶支座为天然隔震橡胶支座、铅芯隔震橡胶支座、高阻尼隔震橡胶支座、弹性环板支座或固定滑板支座中的任意一种。2. The lower vibration isolation bearing for tunnel vibration isolation according to claim 1, wherein the vibration isolation rubber bearing is a natural vibration isolation rubber bearing, a lead core vibration isolation rubber bearing, a high damping rubber bearing Any one of vibration isolation rubber bearing, elastic ring plate bearing or fixed sliding plate bearing. 3.如权利要求2所述的用于隧道隔震的下部隔震支座，其特征在于，所述隔震橡胶支座为圆形、方形或正多边形。3 . The lower seismic isolation bearing for tunnel seismic isolation according to claim 2 , wherein the vibration isolation rubber bearing is a circle, a square or a regular polygon. 4 .
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CN114033037A (en) * 2021-12-02 2022-02-11 山西五建集团有限公司 Construction method of large-span structure capable of automatically releasing restraint counter force along with load change

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2633020A1 (en) * 1976-07-22 1978-01-26 Bochumer Eisen Heintzmann Tunnel lining system using channels and sheets - employs pistons to lift curved channels to form arches with sheets inserted behind
CN208764462U (en) * 2018-06-21 2019-04-19 王网军 A kind of construction of hydro project pipeline fixing device
CN110344502A (en) * 2019-07-15 2019-10-18 广州大学 A kind of anti-buckling low frequency vibration isolation rubber support
CN110644641A (en) * 2019-10-09 2020-01-03 广州大学 A composite vibration isolation rubber bearing with super large deformation capacity
CN210878211U (en) * 2019-11-11 2020-06-30 济宁耀坤机械有限公司 Middle gas storage device of horizontal welding machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2633020A1 (en) * 1976-07-22 1978-01-26 Bochumer Eisen Heintzmann Tunnel lining system using channels and sheets - employs pistons to lift curved channels to form arches with sheets inserted behind
CN208764462U (en) * 2018-06-21 2019-04-19 王网军 A kind of construction of hydro project pipeline fixing device
CN110344502A (en) * 2019-07-15 2019-10-18 广州大学 A kind of anti-buckling low frequency vibration isolation rubber support
CN110644641A (en) * 2019-10-09 2020-01-03 广州大学 A composite vibration isolation rubber bearing with super large deformation capacity
CN210878211U (en) * 2019-11-11 2020-06-30 济宁耀坤机械有限公司 Middle gas storage device of horizontal welding machine

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