CN109487703B - Function-separated self-resetting shock-absorbing bridge and installation method - Google Patents
Function-separated self-resetting shock-absorbing bridge and installation method Download PDFInfo
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- CN109487703B CN109487703B CN201910033131.2A CN201910033131A CN109487703B CN 109487703 B CN109487703 B CN 109487703B CN 201910033131 A CN201910033131 A CN 201910033131A CN 109487703 B CN109487703 B CN 109487703B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
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Abstract
A function separation type self-resetting shock-absorbing bridge and an installation method thereof comprise a bridge abutment, a bridge pier, a girder, a sliding support for vertically supporting the girder at the bridge abutment and a horizontal self-resetting energy-consuming shock-absorbing system connected with the girder. The self-resetting energy-consumption damping system consists of a self-resetting energy-consumption damper and an acceleration-related locking device which are connected in series, wherein a serial positioning device is arranged at the serial part and is fixed at the bottom of the girder, and the self-resetting energy-consumption damping system is hinged with the bridge abutment, the bridge pier and the girder through connecting members; the axis of the self-resetting energy-dissipation damping system is arranged at a certain angle with the axis of the main beam; the acceleration-related locking device can adapt to temperature deformation during normal operation of the bridge, is instantly activated when an earthquake occurs, and starts to work from the reset energy consumption damper; the sliding support and the self-resetting energy-consumption damping system realize the functional separation of the vertical direction and the horizontal direction. The invention can effectively limit the relative displacement of pier beams under the action of earthquake, reduce the earthquake damage of piers and ensure the recovery and traffic of bridge structures after the earthquake.
Description
Technical Field
The invention relates to a bridge structure system, in particular to a functional separation type self-resetting shock-absorbing bridge which is used by matching a self-resetting energy-consuming damper, an acceleration-related locking device, a serial positioning device and a sliding support.
Background
The seismic performance of the existing bridge structural system is improved mainly by arranging shock absorption measures such as a shock absorption and insulation support, an elastoplastic stop block and the like, and the bridge adopting the shock absorption measures has large seismic displacement response of a beam body, and is extremely easy to cause the damage of the support and the occurrence of shock damage such as beam falling. In addition, the traditional damping measures have great residual displacement of the main beam after earthquake, so that the bridge structural system cannot be restored to the initial state, and the requirements of emergency operation after earthquake and the like are hardly met. Therefore, by referring to the design concept of 'functional separation' earthquake resistance adopted in Japanese and China high-speed rail bridges, a functional separation type self-resetting shock-absorbing bridge is provided, the self-resetting shock-absorbing bridge mainly bears the vertical load of a main beam through a sliding support, and the horizontal displacement of the main beam is controlled through a self-resetting energy-consuming shock-absorbing system, so that the functional separation of the vertical direction and the horizontal direction is realized.
Disclosure of Invention
The invention aims to provide a function-separated self-resetting shock-absorbing bridge and an installation method.
The invention relates to a function separation type self-resetting shock-absorbing bridge and an installation method, wherein the function separation type self-resetting shock-absorbing bridge comprises a bridge abutment 1, a bridge pier 2, a girder 3, a sliding support 4 for vertically supporting the girder at the bridge abutment 1 and the bridge pier 2, and a self-resetting energy-consuming shock-absorbing system 5 connected with the girder; the self-resetting energy-consumption damping system 5 consists of a self-resetting energy-consumption damper 7, an acceleration-related locking device 8 and a serial positioning device 9, wherein the serial positioning device 9 is a round stainless steel cylinder, a connecting member 6 is welded at the middle point position outside the steel cylinder, the self-resetting energy-consumption damper 7 and the acceleration-related locking device 8 are connected in series by using a bolt, and the serial positioning device 9 is sleeved outside the serial part to form the self-resetting energy-consumption damping system 5; the connected self-resetting energy-consumption shock absorption device system 5 is hinged with the bridge abutment 1, the bridge pier 2 and the girder 3 through connecting members 6; the self-resetting energy-dissipation and shock-absorption system 5 is arranged at the bottom of the girder in a manner of being parallel to the axis of the girder 3 along the longitudinal direction of the bridge, being perpendicular to the axis of the girder 3 along the transverse direction of the bridge or forming a certain included angle with the axis of the girder 3θThe arrangement is such that,θthe range of the value of (2) is 0-90 degrees.
The invention relates to a method for installing a function separation type self-resetting shock absorption bridge, which comprises the following steps:
(1) Self-resetting energy-consumption damping system: selecting a self-resetting energy consumption damper 7, an acceleration locking device 8 and a serial positioning device 9 according to design requirements; the self-resetting energy-consumption damper 7 and the acceleration-related locking device 8 are connected in series by bolts, and a series positioning device 9 is sleeved outside the series connection part to form a self-resetting energy-consumption damping system 5;
(2) Connection member 6: according to the difference of longitudinal and transverse earthquake risks of the bridge structure, the arrangement positions of the self-resetting energy-consuming damping system 5 on the main beam 3 and the bridge pier 2 or the platform are determined, the connecting members 6 are made of steel according to design requirements, and the connecting members 6 are installed at the arrangement positions of the bridge abutment 1, the bridge pier 2 and the main beam 3 by utilizing high-strength bolts;
(3) And (3) integral assembly: the self-resetting energy-consumption damping system 5 is connected with the connecting members 6 at the bridge abutment 1, the bridge pier 2 and the girder 3 by bolts, and the connecting members 6 welded outside the serial positioning device 9 are connected with the bottom of the girder 3 by bolts.
The invention has the advantages that: 1) Under the actions of temperature, shrinkage and creep, the sliding support meets the small deformation requirement of normal use. 2) Under the action of live load such as vehicles, wind, earthquakes and the like, the acceleration-related locking device is instantly activated to change the mechanical property of the locking device from flexibility to rigidity so as to ensure that the deformation and the energy consumption among pier (platform) beams are all borne by a self-resetting energy consumption damping system, thereby reducing the earthquake damage of the pier. 3) For the continuous beam structure system, the piers are stressed cooperatively and bear earthquake force jointly. 4) The energy of the earthquake input structure is dissipated through the self-resetting energy dissipation damper, so that the earthquake damage of the bridge structure is reduced, the function restorability of the bridge structure after earthquake is realized, and the requirements of emergency operation after earthquake and the like are met.
Drawings
Fig. 1 is a schematic structural diagram of a function separation type self-resetting shock-absorbing bridge system of the invention, fig. 2 is a schematic structural diagram of 2 self-resetting energy-consuming shock-absorbing systems arranged between a girder and a bridge abutment in the function separation type self-resetting shock-absorbing bridge, and fig. 3 and 4 are schematic structural diagrams of a plurality of self-resetting energy-consuming shock-absorbing systems arranged between the girder and a bridge pier in the function separation type self-resetting shock-absorbing bridge. Reference numerals and corresponding names are: 1. bridge abutment, 2, pier, 3, girder, 4, sliding support, 5, from the energy consumption shock mitigation system that restores to throne, 6, connecting elements, 7, from the energy consumption attenuator that restores to throne, 8, acceleration related locking device, 9, series connection positioner.
Detailed Description
As shown in fig. 1-4, the invention relates to a functional separation type self-resetting shock-absorbing bridge and an installation method thereof, wherein the functional separation type self-resetting shock-absorbing bridge comprises a bridge abutment 1, a bridge pier 2, a girder 3, a sliding support 4 for vertically supporting the girder at the bridge abutment 1 and the bridge pier 2 and a self-resetting energy-consuming shock-absorbing system 5 connected with the girder; the self-resetting energy-consumption damping system 5 consists of a self-resetting energy-consumption damper 7, an acceleration-related locking device 8 and a serial positioning device 9, wherein the serial positioning device 9 is a round stainless steel cylinder, a connecting member 6 is welded at the middle point position outside the steel cylinder, the self-resetting energy-consumption damper 7 and the acceleration-related locking device 8 are connected in series by using a bolt, and the serial positioning device 9 is sleeved outside the serial part to form the self-resetting energy-consumption damping system 5; the connected self-resetting energy-consumption shock absorption device system 5 is hinged with the bridge abutment 1, the bridge pier 2 and the girder 3 through connecting members 6; the self-resetting energy-dissipation and shock-absorption system 5 is arranged at the bottom of the girder in a manner of being parallel to the axis of the girder 3 along the longitudinal direction of the bridge, being perpendicular to the axis of the girder 3 along the transverse direction of the bridge or forming a certain included angle with the axis of the girder 3θThe arrangement is such that,θthe range of the value of (2) is 0-90 degrees.
The invention relates to a functional separation type self-resetting shock-absorbing bridge which is used by matching a self-resetting energy-consuming damper, an acceleration-related locking device, a serial positioning device and a sliding support, not only can adapt to free shrinkage of a beam body under the actions of temperature, shrinkage and creep, but also can effectively limit the relative displacement of a pier beam under the action of an earthquake and reduce the damage of a bridge structure. For the continuous beam bridge structure system, the function separation type self-resetting shock absorption bridge enables the fixed piers and the movable piers of the continuous beam bridge to cooperatively bear force, and the independent force of the fixed piers is avoided. Meanwhile, the self-resetting energy-consumption damping system enables the bridge structure to be restored to the initial state, and the purpose that the bridge structure is restored to traffic as soon as possible after earthquake is met. The invention is suitable for the design measures of earthquake resistance and earthquake reduction and isolation of newly-built bridges and the earthquake resistance reinforcement of existing bridges.
As shown in fig. 1-4, the self-resetting energy-dissipation and shock-absorption system 5 and the main beam are used under the condition that the longitudinal earthquake risk of the bridge system is higher than the transverse earthquake riskIncluded angle of 3 axesθThe value is within the range of 0-45 degrees; under the condition that the transverse earthquake risk of the bridge system is higher than the longitudinal earthquake risk of the bridge, the included angle between the self-resetting energy-consumption damping system 5 and the axis of the main beam 3θThe value is within the range of 45-90 degrees; under the condition that the longitudinal and transverse earthquake risks of the bridge system are equivalent or the longitudinal and transverse earthquake risks are uncertain, the axis 5 of the self-resetting energy-consumption damping system 5 and the axis of the main beam 3 are arranged at an included angle of 45 degrees; several of these are typically the following:θ=0° means that the self-resetting energy-consuming and damping system 5 is arranged only in the longitudinal direction of the bridge structure, i.e. the self-resetting energy-consuming and damping system 5 is arranged in parallel to the axis of the main beam 3 along the longitudinal direction of the bridge;θ=90° means that the self-resetting energy-consuming vibration damping system 5 is arranged only in the transverse direction of the bridge, i.e. the self-resetting energy-consuming vibration damping system 5 is arranged along the transverse direction of the bridge perpendicular to the main beam 3 axis.
As shown in fig. 1 to 4, an acceleration-related locking device 8 in the self-resetting energy-consuming vibration absorbing system 5 is hinged to the end part of the self-resetting energy-consuming damper 7, a serial positioning device 9 for preventing the serial system from transversely destabilizing is arranged at the hinge part, the serial positioning device 9 is a cylindrical stainless steel cylinder, a connecting member 6 is welded outside the steel cylinder, and the connecting member 6 is connected with the bottom of the main beam 3 by a bolt.
As shown in fig. 1 to 4, the acceleration-related locking device 8 in the self-resetting energy-dissipating and shock-absorbing system 5 should be selected from locking devices that are in a free expansion state under the action of temperature and shrinkage creep, do not generate secondary internal force, and are instantaneously activated under the conditions of earthquake and high-speed live load.
As shown in fig. 1 to 4, the self-resetting energy-consuming damper 7 in the self-resetting energy-consuming damping system 5 is selected from a self-resetting friction damper and a self-resetting energy-consuming support with self-resetting and energy-consuming characteristics.
As shown in fig. 1 to 4, the sliding support 4 is a plate-type rubber support or a polytetrafluoroethylene sliding plate-type rubber support.
As shown in fig. 1 to 4, the pier 2 is a gravity reinforced concrete solid pier; the bridge abutment 1 adopts a gravity bridge abutment.
As shown in fig. 1-4, the structural system is a simply supported girder bridge and a continuous girder bridge system; the self-resetting energy-consuming damper 7 in the self-resetting energy-consuming damping system 5 arranged at the bridge abutment of the continuous beam bridge can be replaced by an energy-consuming damper.
The invention relates to a method for installing a function separation type self-resetting shock absorption bridge, which comprises the following steps:
(1) Self-resetting energy-consumption damping system: selecting a self-resetting energy consumption damper 7, an acceleration locking device 8 and a serial positioning device 9 according to design requirements; the self-resetting energy-consumption damper 7 and the acceleration-related locking device 8 are connected in series by bolts, and a series positioning device 9 is sleeved outside the series connection part to form a self-resetting energy-consumption damping system 5;
(2) Connection member 6: according to the difference of longitudinal and transverse earthquake risks of the bridge structure, the arrangement positions of the self-resetting energy-consuming damping system 5 on the main beam 3 and the bridge pier 2 or the platform are determined, the connecting members 6 are made of steel according to design requirements, and the connecting members 6 are installed at the arrangement positions of the bridge abutment 1, the bridge pier 2 and the main beam 3 by utilizing high-strength bolts;
(3) And (3) integral assembly: the self-resetting energy-consumption damping system 5 is connected with the connecting members 6 at the bridge abutment 1, the bridge pier 2 and the girder 3 by bolts, and the connecting members 6 welded outside the serial positioning device 9 are connected with the bottom of the girder 3 by bolts.
The self-resetting energy consumption damper 7, the acceleration related locking device 8, the serial positioning device 9 and the sliding support 4 shown in fig. 1 are matched with each other to use the function separation type self-resetting shock absorption bridge, which comprises: abutment 1, pier 2, girder 3, the sliding support 4 of vertical support girder of abutment 1, pier 2 department and the level of connecting the girder are from restoring to throne energy consumption shock mitigation system 5. The self-resetting energy-consumption damping system 5 consists of a self-resetting energy-consumption damper 7, an acceleration-related locking device 8 and a serial positioning device 9, wherein the serial positioning device 9 is a round stainless steel cylinder, a connecting member 6 is welded at the middle point position outside the steel cylinder, the self-resetting energy-consumption damper 7 and the acceleration-related locking device 8 are connected in series by using a bolt, and the serial positioning device 9 is sleeved outside the serial part to form the self-resetting damping system 5; the connected self-resetting shock absorption system 5 is hinged and connected with the abutment 1, the bridge pier 2 and the girder 3 through the connecting component 6. Self-resettingThe energy-consuming and shock-absorbing system 5 is arranged at the bottom of the girder in a manner of being longitudinally arranged along the bridge along the axis of the parallel girder 3, being transversely arranged along the bridge along the axis of the perpendicular girder 3 or forming a certain included angle with the axis of the girder 3θThe arrangement is such that,θthe range of the value of (2) is 0-90 degrees.
By adopting the function separation type self-resetting shock absorption bridge with the self-resetting energy consumption damper 7, the acceleration related locking device 8, the serial positioning device 9 and the sliding support 4 in cooperation, the pier beam relative displacement under the earthquake action can be effectively limited, the earthquake damage of the pier 2 is reduced, and the pier 2 is in an elastic state. In addition, the self-resetting energy-consumption damping system 5 can control residual displacement, so that the function restorability of the bridge structure after earthquake is realized.
And a self-resetting energy-consuming damping system 5 for dissipating earthquake energy and limiting the displacement of the girder 3 is arranged among the bridge abutment 1, the bridge pier 2 and the girder 3. The self-resetting energy consumption damper 7 is used for dissipating earthquake energy, reducing earthquake force transmitted to the upper structure by the lower structure, limiting the girder to generate excessive longitudinal and transverse displacement, reducing and even eliminating the longitudinal and transverse displacement of the girder 3 after earthquake, and enabling the bridge structure to recover to an initial state, thereby being beneficial to recovering to traffic as soon as possible after the bridge structure is in an earthquake.
The end part of the self-resetting energy consumption damper 7 is hinged with an acceleration locking device 8, the device is in a free telescopic state under the action of temperature, shrinkage and creep, and can be instantly activated under the acceleration of earthquake, high-speed live load and the like, so that the mechanical property of the device is changed from flexibility to rigidity, and the deformation and the energy consumption between the girder 3 and the pier 2 (platform) are ensured to be borne by the self-resetting energy consumption damping system 5.
The hinge joint of the self-resetting energy consumption damper 7 and the acceleration related locking device 8 is provided with a serial positioning device 9 for positioning and preventing the transverse instability of the self-resetting damping system, the serial positioning device 9 is a circular stainless steel cylinder, and the middle point position outside the steel cylinder is welded with a connecting member 6.
The sliding support 4 adopts a plate rubber support or a polytetrafluoroethylene plate rubber support, is mainly used for bearing the vertical load of the main beam, and does not generate the vertical load.
Arrangement of self-resetting energy-consumption damping system 5 at beam bottomThe formula: according to the difference of longitudinal and transverse earthquake risks of the bridge structure, determining the included angle between the self-resetting energy-consumption damping system 5 and the axis of the main beam 3θIs of a size of (2); when the longitudinal earthquake risk of the bridge is high, the included angle between the self-resetting energy-consuming damping system 5 and the axis of the main beam 3 is within the range of 0-45 degrees; when the risk of the bridge transverse earthquake is high, the included angle between the self-resetting energy-consuming damping system 5 and the axis of the main beam 3 is within the range of 45-90 degrees; when the longitudinal and transverse earthquake risks are basically equivalent or the longitudinal and transverse earthquake risks are uncertain, the self-resetting energy-consumption damping system axis 5 and the main beam 3 axis are arranged at 45 degrees.
The number of the self-resetting energy-consumption damping systems 5 can be determined according to bridge earthquake resistance and earthquake reduction and isolation design calculation, and when the number of the self-resetting energy-consumption damping systems 5 is 2, the self-resetting energy-consumption damping systems 5 are obliquely arranged among the bridge abutment, the bridge pier and the main girder, as shown in fig. 2 and 3; when the number of the self-resetting energy-consuming and damping systems 5 exceeds 2, the self-resetting energy-consuming and damping systems are arranged in a zigzag manner in the transverse direction of the bridge structure, as shown in fig. 4.
The connection mode of the self-resetting energy-consumption damping system 5 and the bridge abutment 1, the bridge pier 2 and the main girder 3 is different due to different objects (newly built bridge structures or existing bridge structures):
firstly, to newly-built bridge, characterized by is at abutment 1, pier 2, girder 3 department pre-buried connecting element 6 earlier, and then will be from the energy consumption shock attenuation system of resetting 5 and the connection of built-in fitting connecting element 6 adoption articulated mode through the bolt and connect, guarantee that it does not take place to slide or pull out under rare earthquake and wait to destroy.
Secondly, for the existing bridge, the connecting member 6 is firstly arranged at the existing bridge abutment 1, the bridge pier 2 and the main beam 3, and then the self-resetting energy-consumption damping system 5 is connected with the connecting member 6 through bolts, so that the self-resetting energy-consumption damping system is ensured not to be damaged by sliding or pulling out and the like under rare earthquakes.
The function separation type self-resetting shock absorption bridge with the self-resetting energy consumption damper, the acceleration related locking device, the serial positioning device and the sliding support, which are provided by the invention, can effectively improve the bidirectional shock resistance of the bridge structure, and achieve the purposes that the bridge can be restored to an initial state after rare earthquakes, the requirements of emergency operation and the like are met, namely, the bridge can be used for newly building the bridge shock absorption design or the shock resistance reinforcement of the existing bridge.
The above description is merely of specific embodiments of the present invention, and it is obvious to those skilled in the art that modifications and variations can be made without departing from the technical scope of the present invention. Therefore, the present invention is not limited to the above-described embodiments, and any modifications or variations made by those skilled in the art without departing from the scope of the present invention should be within the scope of the present invention according to the technical scope of the present invention.
Claims (5)
1. A function separation formula is from restoration shock attenuation bridge, its characterized in that: the bridge comprises a bridge abutment (1), a bridge pier (2), a main beam (3), a sliding support (4) for vertically supporting the main beam at the bridge abutment (1) and the bridge pier (2) and a self-resetting energy-consuming damping system (5) connected with the main beam; the self-resetting energy-consumption damping system (5) consists of a self-resetting energy-consumption damper (7), an acceleration-related locking device (8) and a serial positioning device (9), wherein the serial positioning device (9) is a circular stainless steel cylinder, a connecting member (6) is welded at the middle point of the outer part of the steel cylinder, the self-resetting energy-consumption damper (7) and the acceleration-related locking device (8) are connected in series by bolts, and the serial positioning device (9) is sleeved outside the serial part to form the self-resetting energy-consumption damping system (5); the connected self-resetting energy-consumption damping system (5) is hinged with the bridge abutment (1), the bridge pier (2) and the main girder (3) through connecting members (6); the self-resetting energy-consumption shock absorption system (5) is arranged at the bottom of the girder in a mode of being longitudinally arranged along the bridge along the axis of the parallel girder (3), is transversely arranged along the bridge along the axis of the vertical girder (3) or is arranged at a certain included angle theta with the axis of the girder (3), and the value range of theta is 0-90 degrees. Under the condition that the longitudinal earthquake risk of the bridge system is higher than the transverse earthquake risk, the included angle theta between the self-resetting energy-consumption damping system (5) and the axis of the main beam (3) is within the range of 0-45 degrees; under the condition that the transverse earthquake risk of the bridge system is higher than the longitudinal earthquake risk of the bridge, the included angle theta between the self-resetting energy-consumption damping system (5) and the axis of the main beam (3) is within the range of 45-90 degrees; under the condition that the longitudinal and transverse earthquake risks of the bridge system are equivalent or the longitudinal and transverse earthquake risks are uncertain, the axis of the self-resetting energy-consumption damping system (5) and the axis of the main beam (3) are arranged at an included angle of 45 degrees; several of these are typically the following: θ=0° means that the self-resetting energy-consuming and damping system (5) is arranged only in the longitudinal direction of the bridge structure, i.e. the self-resetting energy-consuming and damping system (5) is arranged in parallel to the axis of the main girder (3) along the longitudinal direction of the bridge; θ=90° indicates that the self-resetting energy-consuming and damping system (5) is arranged only in the transverse direction of the bridge, i.e. the self-resetting energy-consuming and damping system (5) is arranged along the transverse direction of the bridge along the axis of the vertical main girder (3); the acceleration-related locking device (8) in the self-resetting energy-consumption shock absorption system (5) is hinged to the end part of the self-resetting energy-consumption damper (7), a serial positioning device (9) for preventing the serial system from transversely destabilizing is arranged at the hinge part, the serial positioning device (9) is a cylindrical stainless steel cylinder, a connecting member (6) is welded outside the steel cylinder, and the connecting member (6) is connected with the bottom of the main beam (3) by utilizing a bolt. The sliding support (4) adopts a plate type rubber support or a polytetrafluoroethylene sliding plate type rubber support. The pier (2) adopts a gravity reinforced concrete solid pier; the abutment (1) adopts a gravity abutment.
2. The function separation type self-resetting shock absorbing bridge as claimed in claim 1, wherein: the acceleration-related locking device (8) in the self-resetting energy-consumption shock absorption system (5) is a locking device which is in a free telescopic state under the actions of temperature, shrinkage and creep, does not generate secondary internal force and can be instantly activated under the conditions of earthquake and high-speed live load.
3. The function separation type self-resetting shock absorbing bridge as claimed in claim 1, wherein: the self-resetting energy-consuming damper (7) in the self-resetting energy-consuming damping system (5) is a self-resetting friction damper and a self-resetting energy-consuming support with self-resetting and energy-consuming characteristics.
4. The function separation type self-resetting shock absorbing bridge as claimed in claim 1, wherein: the structural system is a simply supported girder bridge and continuous girder bridge system; the self-resetting energy-consuming damper (7) in the self-resetting energy-consuming damping system (5) arranged at the bridge abutment of the continuous beam bridge can be replaced by an energy-consuming damper.
5. The method for installing the function separation type self-resetting shock absorption bridge is characterized by comprising the following steps of:
(1) Self-resetting energy-consumption damping system: selecting a self-resetting energy consumption damper (7), an acceleration locking device (8) and a serial positioning device (9) according to design requirements; the self-resetting energy-consumption damper (7) and the acceleration-related locking device (8) are connected in series by bolts, and a series positioning device (9) is sleeved outside the series part to form a self-resetting energy-consumption damping system (5);
(2) Connection member (6): according to the difference of longitudinal and transverse earthquake risks of a bridge structure, determining the arrangement positions of a self-resetting energy-consuming damping system (5) on a girder (3) and a bridge pier (2) or a table, manufacturing a connecting member (6) by steel according to design requirements, and installing the connecting member (6) at the arrangement positions of the bridge abutment (1), the bridge pier (2) and the girder (3) by utilizing high-strength bolts;
(3) And (3) integral assembly: the self-resetting energy-consumption damping system (5) is connected with the bridge abutment (1), the bridge pier (2) and the connecting component (6) at the girder (3) by bolts, and the connecting component (6) welded outside the serial positioning device (9) is connected with the bottom of the girder (3) by bolts.
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| CN108350972A (en) * | 2015-11-09 | 2018-07-31 | Itt制造企业有限责任公司 | Viscous damping device assembly with lock function |
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