CN219387919U - Novel arch centering quantitative buckling-preventing yielding energy consumption connecting device - Google Patents

Novel arch centering quantitative buckling-preventing yielding energy consumption connecting device Download PDF

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Publication number
CN219387919U
CN219387919U CN202320221175.XU CN202320221175U CN219387919U CN 219387919 U CN219387919 U CN 219387919U CN 202320221175 U CN202320221175 U CN 202320221175U CN 219387919 U CN219387919 U CN 219387919U
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China
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yielding
buckling
connecting device
core
energy consumption
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CN202320221175.XU
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Inventor
王益锋
王长胜
朱佳棋
章玲祥
詹坤
余建仁
赵宝龙
包宽宽
徐立国
朱江洋
楼之江
郑应松
徐斌
钮慎安
左王斌
李清杰
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Zccc International Engineering Co ltd
Zhejiang Communications Construction Group Co Ltd
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Zccc International Engineering Co ltd
Zhejiang Communications Construction Group Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/30Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways

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Abstract

The novel arch centering quantitative buckling-preventing yielding energy consumption connecting device comprises a steel pipe, wherein the steel pipe is a constraint component of an buckling-preventing energy consumption supporting inner core, the buckling-preventing energy consumption supporting inner core penetrates through an inner cavity of the steel pipe, mortar or concrete is poured between the buckling-preventing energy consumption supporting inner core and the steel pipe to be fixedly combined into a yielding core component, the upper part of the yielding core sleeve is fixedly connected with an upper top plate, the lower part of the yielding core sleeve is fixedly connected with a lower bottom plate, the upper end of one yielding core component is connected with the upper top plate, and the lower end of the yielding core component is connected with the lower bottom plate; the upper ends of the group of at least three yielding core components are connected with the upper top plate, and the lower ends of the group of at least three yielding core components are connected with the middle part of the yielding core sleeve; the upper ends of the other group of at least three yielding core components are connected with the middle part of the yielding core sleeve, and the lower ends of the other group of at least three yielding core components are connected with the lower bottom plate. The utility model has simple structure, convenient installation, pressure relief time and pressure relief quantity which are manually controllable.

Description

Novel arch centering quantitative buckling-preventing yielding energy consumption connecting device
Technical Field
The utility model relates to the technical field of underground engineering structures, in particular to an arch centering quantitative buckling-preventing yielding energy consumption connecting device.
Background
In the construction process of tunnels and underground engineering, particularly in deep underground space and complex stratum, disasters such as large deformation of surrounding rock, rock burst, collapse, water burst and mud burst are often faced.
In order to prevent or avoid these disasters, a great deal of research and practice is carried out on the support of the underground structure by domestic and foreign experts and scholars, and the existing arch form mainly comprises: 1.U section steel arch support, 2 constraint concrete arch support, 3 yielding anchor rod support, 4 yielding arch support and the like. The U-shaped steel arch support is the most commonly used passive support means in a soft rock roadway, and directly acts on the surface of surrounding rock of the roadway by providing passive radial support force to balance the deformation pressure of the surrounding rock and restrict the deformation of the surrounding rock, but the U-shaped steel arch support has more problems in support: (1) the supporting strength is insufficient, (2) the working resistance is low, (3) the supporting capability of the supporting is not fully exerted, the material utilization rate is seriously reduced, the supporting effect is not ensured, and (4) the pressure can not be quantitatively let; the steel tube concrete arch frame is in a supporting form with high bearing capacity, certain contractibility, convenient construction and good mechanical property; but also has the following problems: (1) the contact area between the steel pipe concrete arch frame with the circular section and the surrounding rock surface is small, so that stress concentration is easy to cause, (2) the cost is high, (3) special underground installation equipment is lacked, (4) the arch frame has large weight, and (5) the quantitative yielding function is not provided; the pressing of the anchor bolt support can cause unsafe feeling to operators; compared with the supporting mode, the yielding arch supporting has better engineering applicability and safety, and can greatly reduce disasters, and in the past decades of engineering practice, people manufacture a plurality of supporting materials and supporting structures with yielding functions, improve the original rigid supporting structure and increase the contractibility of the supporting. However, the existing yielding arch support for underground engineering mainly only considers the problem of deformation, the yielding arch support only can freely yielding, and the steel structure energy consumption quantitative yielding device capable of realizing the arch support in work is not reported.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides the novel arch centering quantitative buckling-preventing yielding energy consumption connecting device which has the advantages of simple structure, convenient installation, yielding time and artificially controllable yielding amount, and is suitable for realizing arch centering supporting yielding connecting devices of underground engineering such as tunnels, chamber groups and the like which are difficult to support in various deep parts, soft rocks and the like.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a novel arch centering ration buckling-restrained lets presses power consumption connecting device, includes buckling-restrained energy dissipation support inner core, steel pipe, lets press core sleeve pipe, upper portion roof and lower part bottom plate, the steel pipe is buckling-restrained energy dissipation support inner core's restraint component, buckling-restrained energy dissipation support inner core passes the steel pipe inner chamber buckling-restrained energy dissipation support inner core with pour into mortar or concrete between the steel pipe and connect fixed combination and be letting press core component, let press core sleeve pipe's upper portion and upper portion roof fixed connection, let press core sleeve pipe's lower part and lower part bottom plate fixed connection, one let press core component's upper end with upper portion roof is connected, the lower extreme with lower part bottom plate is connected; the upper ends of the group of at least three yielding core components are connected with the upper top plate, and the lower ends of the group of at least three yielding core components are connected with the middle part of the yielding core sleeve; the upper ends of the other group of at least three yielding core components are connected with the middle part of the yielding core sleeve, and the lower ends of the other group of at least three yielding core components are connected with the lower bottom plate.
Further, an upper connecting device is arranged in the middle of the upper top plate and is respectively connected with the upper end of one yielding core member and the upper ends of a group of at least three yielding core members.
Preferably, the upper connecting device is provided with a connecting clamping groove, and the clamping groove is in limit fit with the end part of the buckling-restrained brace inner core of the yielding core member.
Still further, the middle part of lower bottom plate is equipped with lower connecting device, lower connecting device respectively with the lower extreme that lets press core component, another group at least three lets press core component's of group lower extreme to be connected.
Preferably, the lower connecting device is provided with a connecting clamping groove, and the clamping groove is in limit fit with the end part of the buckling-restrained brace inner core of the yielding core member.
Still further, let and press core sleeve pipe be equipped with sleeve pipe middle part connecting device, sleeve pipe middle part connecting device respectively with a set of at least three lower extreme that lets press core member, another set of at least three upper ends that lets press core member are connected.
Preferably, the section of the yielding core sleeve is square, and four connecting devices are arranged in the middle of the sleeve and are respectively positioned on four side surfaces.
Preferably, the middle connecting device of the sleeve is provided with a clamping groove, and the clamping groove is in limit fit with the end part of the buckling-restrained brace inner core of the yielding core member.
The upper top plate is fixedly connected with an upper arch frame structural plate of the supporting main structure through an upper connecting bolt, and the lower bottom plate is fixedly connected with a lower arch frame structural plate of the supporting main structure through a lower connecting bolt.
The beneficial effects of the utility model are mainly shown in the following steps:
1) The structure is simple, the precision is high, the installation is convenient and flexible, and the application range is wide;
2) The yielding time and the yielding amount are controllable, and quantitative yielding devices with different yielding modes, yielding points and yielding amounts can be selected according to the requirements of specific projects;
3) When the yielding connecting device works, certain energy can be consumed, particularly under the action of dynamic loads such as earthquakes, the buckling-restrained energy-consuming support inner core and the steel pipe are combined into a buckling-restrained structure, mortar or concrete is poured between the buckling-restrained energy-consuming support inner core and the steel pipe, high lateral rigidity and bearing capacity are provided, the state of full-section yielding can be achieved when the yielding connecting device is under pressure, the energy-consuming effect is achieved through yielding hysteresis, the function of a structural fuse is achieved, a supporting structure can be protected, the safe construction of underground engineering is guaranteed, and casualties and economic losses caused by disasters can be reduced;
4) The prefabricated assembly mode is adopted, so that the construction cost and the construction period are greatly reduced, and when the structure is locally damaged in the later operation, local replacement can be adopted, the replacement process is convenient, and the normal construction of the underground engineering cannot be greatly influenced.
Drawings
FIG. 1 is a three-dimensional schematic view of a novel arch quantitative buckling-preventing yielding energy-consuming connecting device;
FIG. 2 is an exploded view of a novel arch quantitative buckling-preventing yielding energy consuming connection device;
FIG. 3 is a cross-sectional view of a novel arch quantitative buckling-restrained yielding energy-consuming connecting device;
fig. 4 is a schematic view of a buckling restrained brace of a novel arch quantitative buckling restrained yielding energy-consuming connecting device.
In the figure: 1 is buckling-restrained energy-dissipating support inner core, 12 is steel pipe, 2 is yielding core sleeve, 21 is sleeve middle connecting device, 3 is upper top plate, 31 is upper connecting device, 4 is lower bottom plate, 41 is lower connecting device, 5 is upper connecting bolt, 6 is lower connecting bolt, 7 is upper arch frame structural plate of supporting main structure, 8 is lower arch frame structure of supporting main structure.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 4, a novel arch quantitative buckling-restrained yielding energy-consuming connecting device comprises a buckling-restrained energy-consuming supporting inner core 1, a steel pipe 12, a yielding core sleeve 2, a sleeve middle connecting device 21, an upper top plate 3, an upper connecting device 31, a lower bottom plate 4, a lower connecting device 41, an upper connecting bolt 5, a lower connecting bolt 6, an upper arch structure plate 7 of a supporting main structure and a lower arch structure 8 of the supporting main structure.
The steel pipe 12 is a constraint component of the buckling restrained energy dissipation supporting inner core 1, the buckling restrained energy dissipation supporting inner core 1 penetrates through an inner cavity of the steel pipe 12, mortar or concrete is poured between the buckling restrained energy dissipation supporting inner core and the steel pipe to be fixedly combined into a yielding core component, the upper part of the yielding core sleeve 2 is fixedly connected with the upper top plate 3, the lower part of the yielding core sleeve 2 is fixedly connected with the lower bottom plate 4, the upper end of one yielding core component is connected with the upper top plate 3, and the lower end of the one yielding core component is connected with the lower bottom plate 4; the upper ends of the group of at least three yielding core components are connected with the upper top plate 3, and the lower ends of the group of at least three yielding core components are connected with the middle part of the yielding core sleeve 2; the upper ends of the other group of at least three yielding core members are connected with the middle part of the yielding core sleeve 2, and the lower ends of the other group of at least three yielding core members are connected with the lower bottom plate 4.
The buckling-restrained energy-dissipation supporting inner core 1 and the steel pipe 12 are combined into a yielding core member, and are positioned at the core part of the whole device and consist of nine supporting inner cores and nine steel pipes; the buckling restrained brace inner core 1 is made of high-quality mild steel or Q235 or high-performance steel;
the steel pipe 12 is a constraint component of the buckling-restrained energy-dissipating support inner core 1, mortar or concrete is poured between the buckling-restrained energy-dissipating support inner core 1 and the steel pipe 12, so that a full-section yielding state can be achieved when the steel pipe is pressed, an energy-dissipating effect is achieved through yielding hysteresis, and the function of a structure fuse is achieved; the steel pipe 12 is made of high-quality Q390 steel;
the yielding core sleeve 2 is positioned at the periphery of the buckling-restrained energy-dissipation supporting inner core 1 and the steel pipe 12, and can play a role in secondary energy dissipation; the yielding core sleeve 2 is made of high-quality Q390 steel;
the sleeve middle connecting device 21 is positioned in the middle of the four sides of the yielding core sleeve 2, and is mainly used for limiting the buckling restrained energy-dissipation supporting inner core 1 through a clamping groove on the device; the sleeve middle connecting device 21 is made of high-quality Q390 steel and is integrated with the yielding core sleeve 2, and a clamping groove on the device is arranged corresponding to the shape of the buckling-restrained energy-dissipation supporting inner core 1;
the upper top plate 3 and the lower bottom plate 4 are positioned at two ends of the yielding core sleeve 2, and the radial movement of the buckling restrained brace inner core 1 is restrained through the clamping grooves on the upper connecting device 31 on the upper top plate 3 and the lower connecting device 41 on the lower bottom plate 4 while the yielding core sleeve 2 is closed; the upper top plate 3 and the lower bottom plate 4 are made of high-quality Q390 steel materials and are welded with the yielding core sleeve 2;
the upper connecting device 31 and the lower connecting device 41 are respectively positioned at the right center positions of the upper top plate 3 and the lower bottom plate 4; the upper connecting device 31 and the lower connecting device 41 are made of high-quality Q390 steel, are integrated with the upper top plate 3 and the lower bottom plate 4, and are provided with clamping grooves corresponding to the shape of the buckling-restrained brace inner core 1;
the upper connecting bolts 5 are mainly used for connecting the upper top plate 3 with an upper arch frame structural plate 7 of the supporting main structure; the lower connecting bolts 6 are mainly used for connecting the lower bottom plate 4 with a lower arch frame structural plate 8 of the supporting main structure; preferably, the upper connecting bolt 5 and the lower connecting bolt 6 are light and high-strength split bolts, and eight split bolts are arranged in total to prevent displacement and damage of the device under dynamic load such as earthquake; the upper arch frame structural plate 7 of the supporting main structure and the lower arch frame structural plate 8 of the supporting main structure are made of high-quality Q390 steel.
The manufacturing method of the novel arch centering quantitative buckling-preventing yielding energy consumption connecting device comprises the following steps of:
(1) Reasonably selecting materials used by the quantitative yielding energy consumption connecting device;
(2) Processing each component of the yielding connecting device, precisely machining the buckling-restrained energy-consuming supporting inner core, the steel pipe and the yielding core sleeve, and carrying out rust removal and sand blasting on the surfaces of the components, so that the surfaces of the components are more frictional when the components are prevented from being damaged due to strength reduction caused by corrosion;
(3) The yielding core sleeve is welded with the upper top plate and the lower bottom plate, the yielding core sleeve and the connecting device in the middle of the sleeve are connected into a whole by adopting a cutting process or welding,
(4) The upper top plate and the upper connecting device are connected into a whole by adopting a cutting process or welding, the centroid of the section of the upper connecting device and the centroid of the surface of the upper top plate are positioned on the same plumb line,
(5) The lower bottom plate and the lower connecting device are integrally connected by adopting a cutting process or welding, the centroid of the section of the lower connecting device and the centroid of the surface of the lower bottom plate are positioned on the same plumb line,
(6) The cross section shape of the lower connecting device is the same as that of the upper connecting device, and grooves on the two connecting devices are formed by a cutting process;
(7) The upper connecting bolts are arranged at four corners of the upper top plate and the upper arch frame structural plate of the supporting main structure, and the upper top plate and the upper arch frame structural plate are tightly connected by adopting split bolts, so that the structural integrity is improved;
(8) The lower connecting bolts are arranged on the four corners of the lower bottom plate and the lower arch frame structural plate of the supporting main structure, and the lower connecting bolts are tightly connected with the lower arch frame structural plate by adopting split bolts, so that the structural integrity is improved.
The scheme of the embodiment has the advantages of simple structure, high precision, convenient and flexible installation and wide application range; the yielding time and the yielding amount are controllable, and quantitative yielding devices with different yielding modes, yielding points and yielding amounts can be selected according to the requirements of specific projects; when the yielding connecting device works, certain energy can be consumed, particularly under the action of dynamic loads such as earthquakes, the buckling-restrained energy-consuming support inner core and the steel pipe are combined into a buckling-restrained structure, mortar or concrete is poured between the buckling-restrained energy-consuming support inner core and the steel pipe, high lateral rigidity and bearing capacity are provided, the state of full-section yielding can be achieved when the yielding connecting device is under pressure, the energy-consuming effect is achieved through yielding hysteresis, the function of a structural fuse is achieved, a supporting structure can be protected, the safe construction of underground engineering is guaranteed, and casualties and economic losses caused by disasters can be reduced; the prefabricated assembly mode is adopted, so that the construction cost and the construction period are greatly reduced, and when the structure is locally damaged in the later operation, local replacement can be adopted, the replacement process is convenient, and the normal construction of the underground engineering cannot be greatly influenced.
The embodiments described in this specification are merely illustrative of the manner in which the inventive concepts may be implemented. The scope of the present utility model should not be construed as being limited to the specific forms set forth in the embodiments, but the scope of the present utility model and the equivalents thereof as would occur to one skilled in the art based on the inventive concept.

Claims (9)

1. The novel arch centering quantitative buckling-restrained yielding energy consumption connecting device is characterized by comprising an buckling-restrained energy consumption supporting inner core, a steel pipe, a yielding core sleeve, an upper top plate and a lower bottom plate, wherein the steel pipe is a constraint component of the buckling-restrained energy consumption supporting inner core, the buckling-restrained energy consumption supporting inner core penetrates through the inner cavity of the steel pipe, mortar or concrete is poured between the buckling-restrained energy consumption supporting inner core and the steel pipe to be fixedly combined into the yielding core component, the upper part of the yielding core sleeve is fixedly connected with the upper top plate, the lower part of the yielding core sleeve is fixedly connected with the lower bottom plate, the upper end of one yielding core component is connected with the upper top plate, and the lower end of the yielding core component is connected with the lower bottom plate; the upper ends of the group of at least three yielding core components are connected with the upper top plate, and the lower ends of the group of at least three yielding core components are connected with the middle part of the yielding core sleeve; the upper ends of the other group of at least three yielding core components are connected with the middle part of the yielding core sleeve, and the lower ends of the other group of at least three yielding core components are connected with the lower bottom plate.
2. A novel arch centering quantitative buckling-preventing yielding energy consumption connecting device as claimed in claim 1, wherein the middle part of the upper top plate is provided with an upper connecting device, and the upper connecting device is respectively connected with the upper end of one yielding core member and the upper ends of a group of at least three yielding core members.
3. A novel arch quantitative buckling-preventing yielding energy consumption connecting device as claimed in claim 2, wherein the upper connecting device is provided with a connecting clamping groove, and the clamping groove is in limit fit with the end part of the yielding core member, which comprises an buckling-preventing energy consumption supporting inner core.
4. A novel arch centering quantitative buckling-preventing yielding energy consumption connecting device as claimed in any one of claims 1 to 3, wherein a lower connecting device is arranged in the middle of the lower bottom plate, and the lower connecting device is respectively connected with the lower end of one yielding core member and the lower ends of the other group of at least three yielding core members.
5. A novel arch centering quantitative buckling-restrained yielding energy-consuming connecting device as claimed in claim 4, wherein the lower connecting device is provided with a connecting clamping groove, and the clamping groove is in limit fit with the end part of the yielding core member, which comprises the buckling-restrained energy-consuming supporting inner core.
6. A novel arch centering quantitative buckling-preventing yielding energy consumption connecting device as claimed in any one of claims 1 to 3, wherein the yielding core sleeve is provided with a sleeve middle connecting device, and the sleeve middle connecting device is respectively connected with the lower ends of one group of at least three yielding core members and the upper ends of the other group of at least three yielding core members.
7. A novel arch centering quantitative buckling-preventing yielding energy consumption connecting device as claimed in claim 6, wherein the section of the yielding core sleeve is square, and four connecting devices are arranged in the middle of the sleeve and are respectively positioned on four sides.
8. A novel arch centering quantitative buckling-restrained yielding energy-dissipating connecting device as claimed in claim 7, wherein the sleeve middle connecting device is provided with a clamping groove, and the clamping groove is in limit fit with the end part of the yielding core member, which comprises the buckling-restrained energy-dissipating supporting inner core.
9. A novel arch quantitative buckling-preventing yielding energy consumption connecting device according to any one of claims 1 to 3, wherein the upper top plate is fixedly connected with an upper arch structural plate of the supporting main structure through an upper connecting bolt, and the lower bottom plate is fixedly connected with a lower arch structural plate of the supporting main structure through a lower connecting bolt.
CN202320221175.XU 2023-02-15 2023-02-15 Novel arch centering quantitative buckling-preventing yielding energy consumption connecting device Active CN219387919U (en)

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Application Number Priority Date Filing Date Title
CN202320221175.XU CN219387919U (en) 2023-02-15 2023-02-15 Novel arch centering quantitative buckling-preventing yielding energy consumption connecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320221175.XU CN219387919U (en) 2023-02-15 2023-02-15 Novel arch centering quantitative buckling-preventing yielding energy consumption connecting device

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CN219387919U true CN219387919U (en) 2023-07-21

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