CN216074705U - Metal energy dissipater between framing tower-connected cable-stayed bridge towers - Google Patents
Metal energy dissipater between framing tower-connected cable-stayed bridge towers Download PDFInfo
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- CN216074705U CN216074705U CN202122202640.9U CN202122202640U CN216074705U CN 216074705 U CN216074705 U CN 216074705U CN 202122202640 U CN202122202640 U CN 202122202640U CN 216074705 U CN216074705 U CN 216074705U
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Abstract
The utility model discloses an inter-tower metal energy dissipater of a framing tower-connected cable-stayed bridge, which comprises a core unit, a constraint unit and an unbonded structure layer, wherein the core unit consists of a working section, a transition section and a connecting section and bears the whole load; the restraint unit consists of a round steel pipe or a square steel pipe; the unbonded structure layer is formed by the combined action of concrete and the constraint units, and restrains the core units from buckling under compression, so that the core plate can yield under tension and compression, and the core steel is effectively constrained. The beneficial effects are that: under the action of an earthquake, the vibration energy transmitted to the tower column from the ground can be greatly dissipated, and the influence of the vertical displacement difference generated between the tower walls of the two connected towers of the framing tower-connected cable-stayed bridge on the two connected towers of the framing tower-connected cable-stayed bridge is reduced; one of the X-shaped energy dissipaters is in tensile deformation, the other energy dissipater is in compression deformation, and the two energy dissipaters are stressed together to improve the energy consumption capability of the energy dissipaters.
Description
Technical Field
The utility model belongs to the technical field of anti-seismic of a tower column of a cable-stayed bridge, and particularly relates to an anti-seismic metal energy dissipater arranged between two connected towers of a framing tower-connected cable-stayed bridge.
Background
The metal energy dissipater firstly yields before the structure is subjected to plastic deformation so as to dissipate most of the vibration energy transferred to the structure by ground motion, and the use of the energy dissipater in bridge engineering is a consensus of experts and scholars in China. At present, the metal energy dissipaters used in bridge engineering in China are mainly divided into two types, one type is the metal energy dissipater applied between a bridge pier top and a beam plate, and in addition, a method for using the metal energy dissipater between bridge piers is common. The traditional energy dissipater arrangement mode is more obvious to the damping effect of vertical seismic action, and under the effect of horizontal earthquake, the traditional energy dissipater arrangement mode is limited to the dissipation effect of earthquake vibration energy. The framing tower-connected cable-stayed bridge has the advantages that due to the fact that the brackets between the tower walls can generate vertical displacement difference under the action of transverse earthquake motion between the two tower-connected bodies, reciprocating dislocation is conducted under the action of the transverse earthquake motion, the tower columns of the cable-stayed bridge are easily damaged, and the safety of the bridge is endangered.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an anti-seismic metal energy dissipater arranged between two linked towers of an amplitude-linked tower type cable-stayed bridge, which is used for solving the problems of vertical displacement difference and the like generated between the tower walls of the two linked towers of the amplitude-linked tower type cable-stayed bridge under the action of transverse earthquake motion.
The purpose of the utility model is realized by adopting the following technical scheme:
the utility model provides a metal energy dissipater between tower-type cable-stay bridge tower of framing allies oneself with, includes core unit, restraint unit, unbonded structure layer, connecting seat and round pin axle, the core unit is placed in the restraint unit, unbonded structure layer is pour between core unit and restraint unit, the connecting seat is connected with the core unit.
The core unit includes working section, changeover portion and linkage segment, weld through full penetration welding between changeover portion and the linkage segment, the working section is connected through the structural layer of unbonded with the restraint unit, through round pin hub connection between connecting seat and the linkage segment.
Preferably, the working section and the transition section are composed of a first section steel, and the lengths of the first section steel and the transition section steel are 240cm and 15cm respectively; the connecting section is made of low-yield-point steel made of LY225, and the length of the connecting section is 73.7 cm; the constraint unit consists of a piece of second-type steel; the non-adhesive structural layer is concrete; the pin shaft is made of 40Cr and is executed according to the specification of JB/T6396.
Preferably, the middle part of the low-yield-point steel of the connecting section material LY225 is provided with a first circular notch with the diameter of 26 cm; the end face of the connecting seat is provided with two arc-shaped rib plates at intervals, the diameter of each rib plate is 76cm, the upper end faces of the rib plates are respectively provided with a second circular notch with the diameter of 26cm, two sides of each rib plate are provided with a pair of circular stiffening ribs with the diameter of 70cm, and the middle part of each stiffening rib is provided with a circular notch with the diameter of 26 cm; the connecting section is connected with the connecting seat through a pin shaft.
Preferably, the connecting seat is connected with the bridge tower and the metal energy dissipater, the installation angle of the metal energy dissipater and the bridge tower is 20 degrees, the metal energy dissipater is arranged in an X-shaped pair, the upper end of the connecting seat is welded before installation, the lower end of the connecting seat is a free end, welding is carried out according to conditions after on-site positioning, the welding mode is full penetration welding, and the connecting seat is connected with the connecting section through a pin shaft; the total length of the pin shaft is 54cm, the diameter of the pin cap is 30cm, the thickness of the pin cap is 2cm, the length of the pin shaft is 52cm, and the diameter of the pin shaft is 26 cm.
Preferably, the first section steel is an I-shaped steel with LY225 low yield point, and the second section steel is a round steel pipe or a square steel pipe with the yield point not lower than Q235.
The utility model has the beneficial effects that:
1. under the action of transverse earthquake motion, the vertical displacement difference generated between the two tower walls of the frame-linked tower cable-stayed bridge can be greatly reduced, and the safety of the two tower of the frame-linked tower cable-stayed bridge is ensured;
2. under the action of transverse earthquake motion, one of the X-shaped energy dissipaters arranged in a cross mode is in tensile deformation, the other energy dissipater is in compression deformation, and the two energy dissipaters are stressed together to improve the energy consumption capacity of the energy dissipaters.
Drawings
The present invention is described in further detail below with reference to the attached drawings.
FIG. 1 is a schematic structural view of a metal energy dissipater between towers of a framing tower-connected cable-stayed bridge according to the utility model;
FIG. 2 is a top view of the metal energy dissipater between the towers of the frame-connected tower-type cable-stayed bridge of the present invention;
FIG. 3 is a schematic cross-sectional view of the core unit and the constraining unit connected by a non-adhesive structural layer;
FIG. 4 is a schematic structural view of a pin;
FIG. 5 is a schematic structural view of a connecting segment;
fig. 6 is a schematic structural view of the connecting seat.
In the figure: core unit 1, restraint unit 2, unbonded structure layer 3, connecting seat 4, round pin axle 5, working segment 6, changeover portion 7, linkage segment 8, metal energy dissipater steel corbel 9 between tower, first circular notch 801, the circular notch 401 of second, circular stiffening rib 402.
Detailed Description
As shown in fig. 1-6: the utility model discloses a metal energy dissipater between towers of an amplitude-division tower-connected cable-stayed bridge, which comprises a core unit 1, a constraint unit 2, an unbonded structure layer 3, a connecting seat 4 and a pin shaft 5, wherein the core unit 1 is placed in the constraint unit 2, the unbonded structure layer 3 is poured between the core unit 1 and the constraint unit 2, and the connecting seat 4 is connected with the core unit 1.
The working section 6 and the transition section 7 are composed of a first section steel, and the lengths of the first section steel and the transition section steel are 240cm and 15cm respectively; the connecting section 8 is made of low-yield-point steel of LY225, and the length of the connecting section is 73.7 cm; the restraint unit 2 consists of a piece of second-type steel; the non-adhesive structural layer 3 is concrete; the pin 5 is made of 40Cr and is implemented according to the specification of JB/T6396.
The middle part of the connecting section 8 is provided with a first circular notch 801 with the diameter of 26 cm; the end face of the connecting seat 4 is provided with two arc-shaped rib plates at intervals, the diameter of each rib plate is 76cm, the upper end faces of the rib plates are respectively provided with a circular notch 401 with the diameter of 26cm, two sides of each rib plate are provided with a pair of circular stiffening ribs 402 with the diameter of 70cm, the middle part of each stiffening rib is provided with a second circular notch with the diameter of 26 cm; the connecting section 8 is connected with the connecting seat 4 through a pin shaft 5.
The connecting seat 4 is connected with the bridge tower and the metal energy dissipater, the installation angle of the metal energy dissipater and the bridge tower is 20 degrees, the metal energy dissipater is arranged in an X-shaped pair, the upper end of the connecting seat 4 is welded in advance before installation, the lower end of the connecting seat is a free end, welding is carried out according to conditions after on-site positioning is carried out, the welding mode is full penetration welding, and the connecting seat is connected with the connecting section 8 through a pin shaft 5; the total length of the pin shaft 5 is 54cm, the diameter of the pin cap is 30cm, the thickness of the pin cap is 2cm, the length of the pin shaft is 52cm, and the diameter of the pin shaft is 26 cm.
Preferably, the first section steel is an I-shaped steel with LY225 low yield point, and the second section steel is a round steel pipe or a square steel pipe with the yield point not lower than Q235.
In this embodiment, the core unit is i-steel, the restraint unit is a round steel tube or a square steel tube, a section of i-steel is inserted into the steel tube, and then concrete is filled in gaps between the i-steel and the steel tube.
According to the buckling restrained brace, an outer-wrapped steel pipe concrete type yielding restrained brace, an outer-wrapped reinforced concrete type restrained brace and an all-steel type buckling restrained brace can be adopted according to the use requirements. The buckling restrained brace consists of a core unit, a restraining unit and an unbonded structural layer between the core unit and the restraining unit. The core unit consists of a working section, a transition section and a connecting section.
The utility model relates to a method for installing a metal energy dissipater between towers of a framing tower-connected cable-stayed bridge, which comprises the following steps of:
step (1): the connecting seat 4 is welded on the steel bracket in advance in a factory building, the pre-embedded position of the steel bracket between towers is determined according to design coordinates, and the pre-embedded steel bracket between towers is installed.
Step (2): before installation, the upper end connecting piece 8 of the metal energy dissipater is welded in advance, the lower end of the metal energy dissipater is a free end, and the lower end connecting piece 8 is welded according to conditions after on-site positioning.
And (3): when in installation, the lower metal energy dissipater is firstly installed and then the upper energy dissipater is installed according to the installation method from bottom to top.
And (4): firstly, the connecting piece 8 on the connecting seat 4 below is vertically hung down from the right above the connecting seat 4, and the pin shaft 5 is withdrawn, so that the connecting piece 8 can be inserted into the middle of the ribbed plate of the connecting seat 4, and after the position is determined, the pin shaft 5 is inserted again for fixing.
And (5): and after the lower connecting piece 8 is installed, withdrawing the pin shaft 5 of the upper connecting seat, vertically hanging the metal energy dissipater from the position right above the connecting seat 4, rotating the energy dissipater after the metal energy dissipater reaches a corresponding position, enabling the connecting piece 8 at the upper end of the energy dissipater to correspond to the pin shaft hole of the upper connecting seat, inserting the pin shaft 5, and fixing.
And (6): the positions of the upper end of the energy dissipater and the connecting piece 8 at the lower end of the energy dissipater are adjusted, after positioning, spot welding is carried out for fixing, then welding is carried out, the lower end of the energy dissipater and the connecting piece 8 are guaranteed to be penetration welding, and the quality of a welding seam is one level. The secondary energy dissipater installation procedure is completed.
And (7): and finishing the installation of another energy dissipater according to the procedures to ensure that one group of energy dissipaters are symmetrically installed in an X shape.
The utility model relates to an anti-seismic metal energy dissipater arranged between two connecting towers of a framing tower-connected cable-stayed bridge, which comprises a core unit, a constraint unit and an unbonded structure layer between the core unit and the constraint unit, wherein the core unit consists of a working section, a transition section and a connecting section and bears the whole load; the constraint unit consists of a steel pipe; the unbonded structural layer is made of concrete, is arranged between the core unit and the constraint unit and coacts with the constraint unit to constrain the core unit to bend under compression, so that the core plate can yield under tension and compression, and the effective constraint on core steel is kept; the beneficial effects are as follows: under the action of an earthquake, the vibration energy transmitted to the tower column from the ground can be greatly dissipated, and the influence of the vertical displacement difference generated between the tower walls of the two connected towers of the framing tower-connected cable-stayed bridge on the two connected towers of the framing tower-connected cable-stayed bridge is reduced; one of the X-shaped energy dissipaters is in tensile deformation, the other energy dissipater is in compression deformation, and the two energy dissipaters are stressed together to improve the energy consumption capability of the energy dissipaters.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a metal energy dissipater between tower-type cable-stay bridge tower of framing antithetical couplet which characterized in that: the binding unit comprises a core unit (1), a constraint unit (2), an unbonded structural layer (3), a connecting seat (4) and a pin shaft (5), wherein the core unit (1) is placed in the constraint unit (2), and the unbonded structural layer (3) is poured between the core unit (1) and the constraint unit (2); the core unit (1) is connected with the connecting seat (4) through a pin shaft (5); the connecting seat (4) is arranged on the bridge tower, and the metal energy dissipater is obliquely connected to the bridge towers on two sides.
2. The metal energy dissipater between the framing tower-connected cable-stayed bridge towers according to claim 1, characterized in that: the number of the metal energy dissipaters is two, and the two metal energy dissipaters are arranged in X pairs.
3. The metal energy dissipater between the framing tower-connected cable-stayed bridge towers according to claim 1, characterized in that: the installation angle of the metal energy dissipater is 20 degrees with the bridge tower.
4. The metal energy dissipater between the framing tower-connected cable-stayed bridge towers according to claim 1, characterized in that: core unit (1) includes working section (6), changeover portion (7) and linkage segment (8), welded connection between changeover portion (7) and linkage segment (8), changeover portion (7) are located working section (6) both sides, working section (6) are connected through nonbonding structural layer (3) with restraint unit (2), be connected through round pin axle (5) between connecting seat (4) and linkage segment (8).
5. The metal energy dissipater between the framing tower-connected cable-stayed bridge towers according to claim 4, characterized in that: the working section (6) and the transition section (7) are composed of a first section steel, and the lengths of the first section steel and the transition section steel are 240cm and 15cm respectively; the connecting section (8) is made of low-yield-point steel of LY225, and the length of the connecting section is 73.7 cm; the restraint unit (2) is made of a second type steel; the non-adhesive structural layer (3) is concrete; the pin shaft (5) is made of 40 Cr.
6. The metal energy dissipater between the framing tower-connected cable-stayed bridge towers according to claim 5, characterized in that: a first circular notch (801) is formed in the middle of the connecting section (8), and the diameter of the first circular notch is 26 cm; two arc-shaped rib plates are arranged on the end face of the connecting seat (4) at intervals, the diameter of each rib plate is 76cm, a second circular notch (401) is formed in the upper end face of each rib plate, the diameter of each rib plate is 26cm, a pair of circular stiffening ribs (402) are arranged on two sides of each rib plate, the diameter of each stiffening rib is 70cm, a circular notch is formed in the middle of each stiffening rib, and the diameter of each stiffening rib is 26 cm.
7. The metal energy dissipater between the framing tower-connected cable-stayed bridge towers according to claim 1, characterized in that: the total length of the pin shaft (5) is 54cm, the diameter of the pin cap is 30cm, the thickness of the pin cap is 2cm, the length of the pin shaft is 52cm, and the diameter of the pin shaft is 26 cm.
8. The metal energy dissipater between the framing tower-connected cable-stayed bridge towers according to claim 5, characterized in that: the first section steel is an I-shaped steel with LY225 low yield point, and the second section steel is a round steel pipe or a square steel pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122202640.9U CN216074705U (en) | 2021-09-13 | 2021-09-13 | Metal energy dissipater between framing tower-connected cable-stayed bridge towers |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122202640.9U CN216074705U (en) | 2021-09-13 | 2021-09-13 | Metal energy dissipater between framing tower-connected cable-stayed bridge towers |
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| CN216074705U true CN216074705U (en) | 2022-03-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113832836A (en) * | 2021-09-13 | 2021-12-24 | 甘肃路桥建设集团有限公司 | Inter-tower metal energy dissipater of framing tower-connected cable-stayed bridge and installation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113832836A (en) * | 2021-09-13 | 2021-12-24 | 甘肃路桥建设集团有限公司 | Inter-tower metal energy dissipater of framing tower-connected cable-stayed bridge and installation method |
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