CN110656591A - Anti-vibration impact bridge blasting demolition method - Google Patents
Anti-vibration impact bridge blasting demolition method Download PDFInfo
- Publication number
- CN110656591A CN110656591A CN201911083626.2A CN201911083626A CN110656591A CN 110656591 A CN110656591 A CN 110656591A CN 201911083626 A CN201911083626 A CN 201911083626A CN 110656591 A CN110656591 A CN 110656591A
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- bridge
- bearing
- blasting
- hole
- drilling
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Abstract
The invention discloses a bridge blasting demolition method for preventing vibration impact, which comprises the following steps of (1) drilling a cover beam of a bridge; (2) drilling a bridge pier of the bridge; (3) filling explosive into the vertical hole on the capping beam, and adopting loose blasting; (1) manufacturing two bearing plates; (2) placing hollow pipes between the two bearing plates, and filling polyurethane materials between the hollow pipes and the two bearing plates; (3) manufacturing a mounting rack, and paving a rubber tire on the upper end surface of the mounting rack; then arranging a raft on the upper end surface of the rubber tire; (4) the mounting frame and the upper end face of the bearing plate are fixed to form an integral buffer device; (5) excavating a damping ditch under the bridge; (6) and placing the buffer device above the damping ditch for fixing. The invention can effectively buffer the bridge after blasting collapse and reduce the impact and noise.
Description
Technical Field
The invention relates to the technical field of blasting, in particular to a bridge blasting demolition method for preventing vibration impact.
Background
Along with the rapid development of economy in China, the road traffic flow is rapidly increased, the use requirement and the bearing capacity requirement on the conventional road bridge structure are higher and higher, many bridge structures are too heavy under busy traffic, and some bridge structures exceed the design life; some dangerous bridges are caused by various reasons and are subjected to the conditions of reinforcement, reconstruction, dismantling and reconstruction.
In the process of bridge blasting, the bridge that collapses can produce huge impact to ground, and this impact can bring certain vibration and influence the resident's of annex normal life to surrounding, and simultaneously, the impact still can bring huge noise and form noise pollution.
Disclosure of Invention
The invention aims to solve the problems that: the bridge blasting demolition method for preventing vibration impact can effectively buffer a bridge after blasting collapse and reduce impact and noise.
The technical scheme provided by the invention for solving the problems is as follows: a bridge blasting demolition method for preventing vibration impact comprises the following steps,
(1) drilling holes in the bent cap beam of the bridge, wherein the drilling direction is vertical holes, the hole diameter is selected to be 100-110mm, the hole depth is selected to be 3-5m, and the distance between every two vertical holes is 2-3 m;
(2) drilling the bridge piers of the bridge, wherein the drilling mode of a horizontal hole and a vertical hole is adopted, the vertical hole is one, the hole depth is 6-8m, the number of the horizontal holes is two, the distance between the horizontal holes is 2-2.5m, and the hole depth is 3-5 m;
(3) filling explosive into the vertical hole on the capping beam, adopting loose blasting, wherein the unit consumption q of the explosive is 0.3-0.4kg/m3The diameter of the emulsion explosive is selected to be 70 mm;
(4) manufacturing two bearing frames, wherein the bearing frames are composed of two bearing plates which are correspondingly arranged up and down and a hollow pipe arranged between the two bearing plates, the wall thickness of the hollow pipe is 18-22mm, the diameter of the hollow pipe is 180-220mm, polyurethane materials are filled between the hollow pipes and between the hollow pipe and the two bearing plates, and then the two bearing frames are stacked up and down;
(5) manufacturing an installation frame matched with the height and the width of the bearing plate, paving a rubber tire on the upper end face of the installation frame, and fixing the rubber tire and the installation frame through an iron wire or a string; then arranging a layer of raft woven by bamboo chips on the upper end surface of the rubber tire, and fixing the raft and the rubber tire through iron wires or strings;
(6) the mounting frame is fixed on the upper end surfaces of the two bearing frames to form an integral buffer device;
(7) a damping ditch is dug under the bridge, and the depth of the damping ditch is consistent with the height of the bearing plate;
(8) and (5) placing the buffer device prepared in the step (6) above the damping groove for fixing.
Preferably, the hollow tubes in the step (5) are arranged in parallel at uniform intervals.
Preferably, the hollow tubes in the two carriers stacked in step (4) are arranged vertically.
Compared with the prior art, the invention has the advantages that: the 3 layers of damping buffer devices, namely the rubber tires, the hollow pipes and the damping ditches, are used for bearing the collapsed bridge, so that the collapsed bridge can be effectively buffered, and the impact and noise are reduced.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present invention can be fully understood and implemented.
Example 1
A bridge blasting demolition method for preventing vibration impact comprises the following steps,
(1) drilling holes in the bent cap beam of the bridge, wherein the drilling direction is vertical holes, the hole diameter is 100mm, the hole depth is 3m, and the distance between every two vertical holes is 2 m;
(2) drilling the bridge pier of the bridge, wherein the drilling mode of a horizontal hole and a vertical hole is adopted for drilling, the vertical hole is one, the hole depth is 6m, the number of the horizontal holes is two, the distance between the horizontal holes is 2m, and the hole depth is 3 m;
(3) filling explosive into the vertical hole on the capping beam, adopting loose blasting, wherein the unit consumption q of the explosive is 0.3kg/m3The diameter of the emulsion explosive is selected to be 70 mm;
(4) manufacturing two bearing frames, wherein each bearing frame is composed of two bearing plates which are correspondingly arranged up and down and a hollow pipe arranged between the two bearing plates, the wall thickness of each hollow pipe is 18mm, the diameter of each hollow pipe is 180mm, polyurethane materials are filled between the hollow pipes and the two bearing plates, and then the two bearing frames are stacked up and down;
(5) manufacturing an installation frame matched with the height and the width of the bearing plate, paving a rubber tire on the upper end face of the installation frame, and fixing the rubber tire and the installation frame through an iron wire or a string; then arranging a layer of raft woven by bamboo chips on the upper end surface of the rubber tire, and fixing the raft and the rubber tire through iron wires or strings;
(6) the mounting frame is fixed on the upper end surfaces of the two bearing frames to form an integral buffer device;
(7) a damping ditch is dug under the bridge, and the depth of the damping ditch is consistent with the height of the bearing plate;
(8) and (5) placing the buffer device prepared in the step (6) above the damping groove for fixing.
Example 2
A bridge blasting demolition method for preventing vibration impact comprises the following steps,
(1) drilling holes in the bent cap beam of the bridge, wherein the drilling direction is vertical holes, the hole diameter is 110mm, the hole depth is 5m, and the distance between every two vertical holes is 3 m;
(2) drilling a bridge pier of the bridge, wherein the drilling mode of a horizontal hole and a vertical hole is adopted, the vertical hole is one, the hole depth is 8m, the number of the horizontal holes is two, the distance between the horizontal holes is 2.5m, and the hole depth is 5 m;
(3) filling explosive into the vertical hole on the capping beam, adopting loose blasting, and selecting the unit consumption q of the explosive as 0.4kg/m3The diameter of the emulsion explosive is selected to be 70 mm;
(4) manufacturing two bearing frames, wherein each bearing frame is composed of two bearing plates which are correspondingly arranged up and down and a hollow pipe arranged between the two bearing plates, the wall thickness of each hollow pipe is 22mm, the diameter of each hollow pipe is 220mm, polyurethane materials are filled between the hollow pipes and the two bearing plates, and then the two bearing frames are stacked up and down;
(5) manufacturing an installation frame matched with the height and the width of the bearing plate, paving a rubber tire on the upper end face of the installation frame, and fixing the rubber tire and the installation frame through an iron wire or a string; then arranging a layer of raft woven by bamboo chips on the upper end surface of the rubber tire, and fixing the raft and the rubber tire through iron wires or strings;
(6) the mounting frame is fixed on the upper end surfaces of the two bearing frames to form an integral buffer device;
(7) a damping ditch is dug under the bridge, and the depth of the damping ditch is consistent with the height of the bearing plate;
(8) and (5) placing the buffer device prepared in the step (6) above the damping groove for fixing.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the invention as defined by the independent claims are intended to be embraced therein.
Claims (3)
1. A bridge blasting demolition method for preventing vibration impact is characterized in that: the method comprises the following steps of,
(1) drilling holes in the bent cap beam of the bridge, wherein the drilling direction is vertical holes, the hole diameter is selected to be 100-110mm, the hole depth is selected to be 3-5m, and the distance between every two vertical holes is 2-3 m;
(2) drilling the bridge piers of the bridge, wherein the drilling mode of a horizontal hole and a vertical hole is adopted, the vertical hole is one, the hole depth is 6-8m, the number of the horizontal holes is two, the distance between the horizontal holes is 2-2.5m, and the hole depth is 3-5 m;
(3) filling explosive into the vertical hole on the capping beam, adopting loose blasting, wherein the unit consumption q of the explosive is 0.3-0.4kg/m3The diameter of the emulsion explosive is selected to be 70 mm;
(4) manufacturing two bearing frames, wherein the bearing frames are composed of two bearing plates which are correspondingly arranged up and down and a hollow pipe arranged between the two bearing plates, the wall thickness of the hollow pipe is 18-22mm, the diameter of the hollow pipe is 180-220mm, polyurethane materials are filled between the hollow pipes and between the hollow pipe and the two bearing plates, and then the two bearing frames are stacked up and down;
(5) manufacturing an installation frame matched with the height and the width of the bearing plate, paving a rubber tire on the upper end face of the installation frame, and fixing the rubber tire and the installation frame through an iron wire or a string; then arranging a layer of raft woven by bamboo chips on the upper end surface of the rubber tire, and fixing the raft and the rubber tire through iron wires or strings;
(6) the mounting frame is fixed on the upper end surfaces of the two bearing frames to form an integral buffer device;
(7) a damping ditch is dug under the bridge, and the depth of the damping ditch is consistent with the height of the bearing plate;
(8) and (5) placing the buffer device prepared in the step (6) above the damping groove for fixing.
2. The method for demolishing a bridge by blasting to prevent vibration and impact according to claim 1, wherein: the hollow pipes in the step (4) are arranged in parallel at uniform intervals.
3. The method for demolishing a bridge by blasting to prevent vibration and impact according to claim 2, wherein: and (4) the hollow pipes in the two bearing frames which are stacked in the step (4) are vertically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911083626.2A CN110656591A (en) | 2019-11-07 | 2019-11-07 | Anti-vibration impact bridge blasting demolition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911083626.2A CN110656591A (en) | 2019-11-07 | 2019-11-07 | Anti-vibration impact bridge blasting demolition method |
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| Publication Number | Publication Date |
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| CN110656591A true CN110656591A (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911083626.2A Pending CN110656591A (en) | 2019-11-07 | 2019-11-07 | Anti-vibration impact bridge blasting demolition method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0916786A4 (en) * | 1997-05-30 | 2001-04-04 | Hitachi Shipbuilding Eng Co | Destroying apparatus and method, and holding member for use in that method |
| CN101832744A (en) * | 2010-05-25 | 2010-09-15 | 江南水利水电工程公司 | Blasting demolishing method |
| CN104930936A (en) * | 2015-06-24 | 2015-09-23 | 中交一公局第五工程有限公司 | Rapid controlled blasting demolition method for arch-shaped highway over-line bridge |
-
2019
- 2019-11-07 CN CN201911083626.2A patent/CN110656591A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0916786A4 (en) * | 1997-05-30 | 2001-04-04 | Hitachi Shipbuilding Eng Co | Destroying apparatus and method, and holding member for use in that method |
| CN101832744A (en) * | 2010-05-25 | 2010-09-15 | 江南水利水电工程公司 | Blasting demolishing method |
| CN104930936A (en) * | 2015-06-24 | 2015-09-23 | 中交一公局第五工程有限公司 | Rapid controlled blasting demolition method for arch-shaped highway over-line bridge |
Non-Patent Citations (2)
| Title |
|---|
| 凌宇恒: ""高速公路跨线天桥爆破拆除及数值模拟", 《工程科技Ⅱ辑》 * |
| 龙源等: "《中国爆破新技术Ⅲ》", 30 June 2012 * |
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| CB03 | Change of inventor or designer information |
Inventor after: He Wuyi Inventor after: Tan Xuegang Inventor after: Yang Zhixu Inventor after: Shang Jun Inventor after: Fu Yan Shu Inventor after: Shang Shuaitao Inventor after: Liu Youping Inventor after: Liu Shaohou Inventor after: Zhuo Guanghua Inventor before: Gao Fuyin Inventor before: Liu Youping Inventor before: Liu Shaohou Inventor before: Zhuo Guanghua Inventor before: He Wuyi Inventor before: Tan Xuegang Inventor before: Yang Zhixu Inventor before: Shang Jun Inventor before: Fu Yan Shu Inventor before: Shang Shuaitao Inventor before: Tian Yongliang Inventor before: Xie Xingbo |
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Application publication date: 20200107 |
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