CN109371826B - Slide way type shock absorber for erecting simply-supported steel beam of sea-crossing bridge - Google Patents
Slide way type shock absorber for erecting simply-supported steel beam of sea-crossing bridge Download PDFInfo
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- CN109371826B CN109371826B CN201811417855.9A CN201811417855A CN109371826B CN 109371826 B CN109371826 B CN 109371826B CN 201811417855 A CN201811417855 A CN 201811417855A CN 109371826 B CN109371826 B CN 109371826B
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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
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Abstract
The invention discloses a slide way type shock absorber for erecting a simply-supported steel beam of a sea-crossing bridge, which comprises a support and a slide block, wherein the support is fixed at the top of a pier, the upper end of the support is open, a slide seat is arranged in the support, the bottom surface of the slide seat is connected with the support through a spring, two sides of the slide seat are connected with the support through limit pins, and the top surface of the slide seat is provided with a slide way for positioning the steel beam; the slider is fixed in and waits to erect girder steel bottom, the bottom surface of slider be the sphere, with the radius adaptation of slide, along with waiting to erect the position change of girder steel, with the slide contact or break away from. The invention has simple structure and easy processing; when the beam falls, the beam body is automatically positioned at the lowest point of the slideway, so that the steel beam is ensured to be accurately positioned, the automatic positioning function is realized, and the beam falling accuracy is improved; the energy consumption and the buffering effect of the contact friction energy consumption of the sliding block and the sliding seat and the buffering effect of the spring can be realized in the beam falling process, and the steel beam erecting efficiency is effectively improved.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a slide way type shock absorber for erecting a simply supported steel beam of a sea-crossing bridge.
Background
Under the background of the national vigorous development of ocean projects, the construction of sea-crossing bridges in China is in a vigorous development stage, such as built Hangzhou bay sea-crossing bridges, mansion bridges, harbor pearl Macau bridges, built cistron and other iron-sharing dual-purpose bridges. In the process of constructing the cross-sea bridge, in order to reduce offshore operation, the construction of simply supported steel beams is a method for prefabricating whole holes in a factory and erecting a floating crane at a bridge site. Unlike inland river erecting, the process of erecting simply-supported steel beams of a sea-crossing bridge needs to be faced with complex environmental factors such as wind, waves, currents and the like. The factors are the space vibration of the steel beam during hoisting, increase the potential safety hazard of construction, and cause the collision of the steel beam and the pier when falling the beam. Therefore, how to perform damping during beam falling is an urgent problem.
In the prior art, a floating crane is usually adopted, when the steel beam is erected by adopting the floating crane, because the hoisting height is large and is generally more than 40m, the vibration frequency of the steel beam is low and is below 0.16Hz, if the traditional tuned mass damper is adopted to control the vibration of the steel beam, the required spring stiffness is low, and the steel beam can yield in the vibration process; the viscous dampers widely used in bridge engineering and building engineering have no mounting pivot in the hoisting process, so that the tuned mass dampers and the viscous dampers are difficult to be applied to actual steel beam erection.
In view of the above, it is urgently needed to develop a damping structure for a steel beam steel frame to improve the erection efficiency and the erection precision.
Disclosure of Invention
The invention aims to solve the technical problems that the existing steel beam buffering and damping structure is inconvenient to operate and low in adjustment precision.
In order to solve the technical problem, the technical scheme adopted by the invention is to provide a slideway type damper for erecting simply supported steel beams of a cross-sea bridge, which comprises the following components:
the support is fixed at the top of the pier, the upper end of the support is open, a sliding seat is arranged in the support, the bottom surface of the sliding seat is connected with the support through a spring, two sides of the sliding seat are connected with the support through limiting pins, a slide way for positioning a steel beam is arranged on the top surface of the sliding seat, and the slide way is arc-shaped;
the slider is fixed in and waits to erect the girder steel bottom, the bottom surface of slider be the sphere, with the radius adaptation of slide, along with waiting to erect the position change of girder steel, with the slide contact or break away from.
In another preferred embodiment, the radius of the slide way is the straight line distance between the suspension point of the suspension arm and the suspension point of the steel beam when the beam is dropped.
In another preferred embodiment, the springs are distributed on the bottom of the sliding seat uniformly.
In another preferred embodiment, two ends of the sliding seat are provided with connecting blocks, and the limiting pin is arranged between the connecting blocks and the support.
In another preferred embodiment, the spherical surface of the slider is 1m in diameter, the diameter of the slideway is 40m, and the stiffness of the spring is 12 kN/m. Compared with the prior art, the invention has the following advantages:
1. the structure is simple, and the processing is easy;
2. when the beam falls, the beam body is automatically positioned at the lowest point of the slideway, so that the steel beam is ensured to be accurately positioned, the automatic positioning function is realized, and the beam falling accuracy is improved;
3. the contact friction of the sliding block and the sliding seat and the elastic energy of the spring realize the buffering and energy dissipation functions in the beam placing process, and the steel beam erecting efficiency is effectively improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention provides a slideway type shock absorber for erecting a simply supported steel beam of a cross-sea bridge, which can realize automatic positioning of a beam, buffer and energy consumption functions in the beam placing process and effectively improve the girder erection efficiency. The invention is described in detail below with reference to the drawings and the detailed description.
As shown in figure 1, the invention provides a slide way type damper for erecting a simply supported steel beam of a sea-crossing bridge, which is fixed on a pier and comprises a support 4 and a slide block 1.
Support 4 is fixed in the pier top, and the upper end is uncovered, and inside is equipped with the slide, is connected through spring 3 between the bottom surface of slide 2 and the support 4, and both sides are connected with support 4 through spacer pin 5, and the top surface of slide 2 is equipped with the slide that is used for the girder steel location, and the slide is arc. The slider 1 is fixed in and waits to erect the girder steel bottom, and the bottom surface of slider 1 is the sphere, with the radius adaptation of slide, along with waiting to erect the position change of girder steel, with the slide contact or break away from.
The working process of the invention is as follows:
in the process of lowering the steel beam, due to the influence of external wind, waves and currents, the steel beam can impact the pier, the sliding block 1 is lowered into the sliding way, automatic positioning is achieved, energy dissipation is conducted through friction of the contact surface when the sliding block 1 is in contact with the sliding way, meanwhile, the spring 3 is in a working state, vibration impact caused by the steel beam can be effectively relieved, energy dissipation and buffering effects are achieved, the steel beam vibration can be reduced, and meanwhile, collision between the steel beam and the pier is reduced.
The radius of the slide way is the linear distance between the lifting point and the steel beam lifting point when the beam falls, and is consistent with the radius of the slide block, so that the steel beam can automatically center the lowest point on the slide way when being put in place, and automatic and accurate placing is realized.
The springs 3 are distributed on the bottom of the sliding seat 2 uniformly. The setting of spring 3 can set up to evenly arranging, and the equilibrium of atress can be guaranteed to a plurality of springs 3 to improve the location effect with the slide combined action.
The two ends of the sliding seat 2 are provided with connecting blocks, and the limiting pin 5 is arranged between the connecting blocks and the support 4. The sliding seat 2 can vibrate when being contacted and extruded by the sliding block 1, and the limiting pin 5 can limit the action amplitude of the sliding seat 2, so that the amplitude is prevented from being too large and shaking left and right.
The spherical surface diameter of the slide block 1 is 1m, the diameter of the slide way is 40m, and the rigidity of the spring 3 is 12 kN/m. Under the actual operation condition, if a certain sea-crossing bridge with 80m span simply-supported steel truss girder weighs 1800 tons, 4 units of the vibration damping device are hoisted and erected by using a floating crane, and 4 vibration damping devices are respectively arranged at 4 corner points of the steel girder ground. The diameter of the sliding block 1 is 1m, the diameter of the slide way is 40m, the rigidity of the spring 3 is 12kN/m, and the radius of the slide way is 40 m.
The invention has the following advantages:
1. the structure is simple, and the processing is easy;
2. when the beam falls, the beam body is automatically positioned at the lowest point of the slideway, so that the steel beam is ensured to be accurately positioned, the automatic positioning function is realized, and the beam falling accuracy is improved;
3. the energy consumption and the buffering effect of the contact friction energy consumption of the sliding block and the sliding seat and the buffering effect of the spring can be realized in the beam falling process, and the steel beam erecting efficiency is effectively improved.
The present invention is not limited to the above-mentioned preferred embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
Claims (4)
1. A slide type damper for erecting a simply supported steel beam of a sea-crossing bridge, comprising:
the support is fixed at the top of the pier, the upper end of the support is open, a sliding seat is arranged in the support, the bottom surface of the sliding seat is connected with the support through a spring, two sides of the sliding seat are connected with the support through limiting pins, a slide way for positioning a steel beam is arranged on the top surface of the sliding seat, the slide way is arc-shaped, and the radius of the slide way is the linear distance between a suspension arm suspension point and a steel beam suspension point when the beam falls;
the slider is fixed in and waits to erect the girder steel bottom, the bottom surface of slider be the sphere, with the radius adaptation of slide, along with waiting to erect the position change of girder steel, with the slide contact or break away from.
2. The slide type damper for erecting a simply supported steel beam of a sea-crossing bridge according to claim 1, wherein said springs are plural and uniformly distributed on the bottom of said slide.
3. The slide rail type damper for the erection of a simply supported steel beam of a sea-crossing bridge according to claim 1, wherein connecting blocks are provided at both ends of the slide carriage, and the limit pin is provided between the connecting blocks and the support.
4. The slide type damper for erecting a simply supported steel beam of a sea-crossing bridge according to claim 1, wherein a spherical diameter of said slider is 1m, a diameter of said slide is 40m, and a stiffness of said spring is 12 kN/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417855.9A CN109371826B (en) | 2018-11-26 | 2018-11-26 | Slide way type shock absorber for erecting simply-supported steel beam of sea-crossing bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417855.9A CN109371826B (en) | 2018-11-26 | 2018-11-26 | Slide way type shock absorber for erecting simply-supported steel beam of sea-crossing bridge |
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| Publication Number | Publication Date |
|---|---|
| CN109371826A CN109371826A (en) | 2019-02-22 |
| CN109371826B true CN109371826B (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811417855.9A Active CN109371826B (en) | 2018-11-26 | 2018-11-26 | Slide way type shock absorber for erecting simply-supported steel beam of sea-crossing bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112681103B (en) * | 2020-12-23 | 2022-11-18 | 湖南国创钢结构有限责任公司 | Bottle gourd-shaped steel box girder convenient to construct and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004308109A (en) * | 2003-04-01 | 2004-11-04 | Kaimon:Kk | Fixed load support member |
| KR20060075358A (en) * | 2004-12-28 | 2006-07-04 | 김성원 | Rolling pendulum bearing with low friction |
| CN201588304U (en) * | 2009-12-08 | 2010-09-22 | 河北理工大学 | Simple pendulum composite three-dimensional shock insulation support |
| CN206220260U (en) * | 2016-11-22 | 2017-06-06 | 山东科技大学 | A kind of Self-resetting three-dimensional damping energy dissipating support for building |
| KR101795642B1 (en) * | 2016-12-22 | 2017-11-08 | 주식회사 문창 | Structure Support Device |
| CN108729341A (en) * | 2018-09-05 | 2018-11-02 | 沈阳建筑大学 | A kind of limiting device having height difference bridge |
-
2018
- 2018-11-26 CN CN201811417855.9A patent/CN109371826B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004308109A (en) * | 2003-04-01 | 2004-11-04 | Kaimon:Kk | Fixed load support member |
| KR20060075358A (en) * | 2004-12-28 | 2006-07-04 | 김성원 | Rolling pendulum bearing with low friction |
| CN201588304U (en) * | 2009-12-08 | 2010-09-22 | 河北理工大学 | Simple pendulum composite three-dimensional shock insulation support |
| CN206220260U (en) * | 2016-11-22 | 2017-06-06 | 山东科技大学 | A kind of Self-resetting three-dimensional damping energy dissipating support for building |
| KR101795642B1 (en) * | 2016-12-22 | 2017-11-08 | 주식회사 문창 | Structure Support Device |
| CN108729341A (en) * | 2018-09-05 | 2018-11-02 | 沈阳建筑大学 | A kind of limiting device having height difference bridge |
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| CN109371826A (en) | 2019-02-22 |
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