CN101886684A - Damping control device of underground pipeline structure in subsidence area - Google Patents
Damping control device of underground pipeline structure in subsidence area Download PDFInfo
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- CN101886684A CN101886684A CN 201010203356 CN201010203356A CN101886684A CN 101886684 A CN101886684 A CN 101886684A CN 201010203356 CN201010203356 CN 201010203356 CN 201010203356 A CN201010203356 A CN 201010203356A CN 101886684 A CN101886684 A CN 101886684A
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Abstract
The invention relates to a damping control device of an underground pipeline structure in a subsidence area, belonging to the technical field of seismic proofing. The damping control device is formed by connecting a pipe clamp, a lead rubber shock insulation support and a reinforced concrete member, wherein the lead rubber seismic isolation support is arranged between the bottom of underground pipelines and an earth mass structure, and comprises a rubber layer, middle circular steel plates, an end steel plate, a connecting steel plate and a lead core; the rubber layer is clamped between two middle circular steel plates, and the lead core, the rubber layer and the circular steel plates are integrated into a whole; the underground pipelines and the lead rubber seismic isolation support are fixed together; the connecting steel plate at the lower part is connected with cast-in-place reinforced concrete; and the underground pipelines, the lead rubber seismic isolation support and the reinforced concrete member forms into a whole to form the damping control device of the underground pipeline structure in the subsidence area. The damping control device can improve the safety of the pipeline structure systems in an seismic area, has the advantages of simple structure and convenient construction, and can be widely used in reformation, rebuilding and reinforcement engineering of old urban towns.
Description
Technical field
The invention belongs to building engineering structure earthquake-proofing technique field, relate to the device that uses stone lead-rubber damping support to improve the whole anti-seismic performance of underground pipeline structure in subsidence area system.
Background technique
Growing along with national economy, the quickening that urban modernization is built, lifeline engineering has played more and more important effect in daily life, and buried pipeline is an important component part of lifeline engineering.When earthquake took place, the differential settlement in place will cause the destruction of buried pipeline, brings huge city property and personnel's loss, so just impelled us that structure has been proposed strict more quake-resistant safety.For the Subsidence Area buried pipeline, main earthquake resistant measure has at present:
(1) during embedding pipeline, should avoid the Subsidence Area area as far as possible.If must pass through, we should make full use of existing geologic information or seismic safety evaluation result, and buried pipeline is effectively provided fortification against earthquakes.
(2) the pipeline shallow embedding of should trying one's best, and should be embedded in the non-cohesive soil of loose or intermediate density, soil is to the restraining force of buried pipeline when being beneficial to reduce earthquake.For passing through the Subsidence Area buried pipeline that may produce big displacement, can build pipe trench by laying bricks or stones and improve the buried pipeline shock resistance.Secondly, hard, the smooth overcoat of intersection shop one deck in Subsidence Area and non-Subsidence Area increases the ability that buried pipeline bears the depression displacement with the friction angle that reduces surface of contact between buried pipeline and the soil.
The compacting when horizontal loading of loose sand, in compacting process, friction angle increases, thereby the situation of the higher sand of the maximum drag that produces and initial density is consistent.The friction angle that reduces between pipeline and the soil is favourable, but is mainly reflected in axially, and soil changes little to the horizontal drag of pipeline.
(3) use the pipeline material of anti-seismic performance good (intensity height, ductility good) can effectively resist geological process.Bigger wall thickness influences the main favorable factor of buried pipeline reaction when being the pipeline tension.It is proportional that surrounding soil acts on the diameter of longitudinal force on the buried pipeline and pipeline, and the product of the diameter of the drag of buried pipeline opposing external force and pipeline and wall thickness is proportional.In addition at buried pipeline by compression the time, the more little antidetonation that helps more of the ratio of pipeline diameter and pipeline wall thickness.Therefore, on analyzing, should adopt ductility thick-wall pipeline preferably in the actual engineering.The pipeline that tube wall is thicker can improve the shock resistance of buried pipeline greatly, but the increase of thickness is limited, for the bigger depression of displacement, not necessarily can meet the demands.
(4) in changeover portion, should not be provided with and the inconsistent annex of buried pipeline dynamic property (as elbow, threeway and gate etc.), also should not adopt the pipeline of different wall.In other words, must guarantee that buried pipeline has enough non-anchorage lengths, increase non-anchorage length and can increase the strength of buried pipeline soil movement.
So, taking place on ground under the situation of the big displacement of depression, above measure may not necessarily meet the demands, present earthquake resistant measure and imperfection.The fragility that under the big displacement effect of depression, is showed in view of buried pipeline, and its destruction brings under the prerequisite of massive losses for the country and the people, and we should take more reliable and effective measure to improve and guarantee the quake-resistant safety of Subsidence Area buried pipeline under the big displacement effect of depression.
After the Fernando earthquake, Chinese scholars is being done a large amount of theories, test and analog study aspect the seismic response analysis of buried pipeline, obtained numerous achievements in research, but very few for the research work of buried pipeline earthquake resistant measure aspect and the achievement that obtains.Domestic mainly is that the Xue Jinghong of engineering mechanics research institute of China national seismological bureau takes isolation measure to the buried pipeline of crossover fault and the reaction of its buried pipeline under shock-proof device is analyzed, and it is very significant therefore seeking suitable controlling method at the Subsidence Area buried pipeline.
Summary of the invention
The invention provides a kind of damping control device of underground pipeline structure in subsidence area,, reduce the reaction of structural system under geological process, solve the safety issue of structural system under geological process to improve the whole shock resistance of buried pipeline.
Technological scheme of the present invention is:
The damping control device of underground pipeline structure in subsidence area mixes the earth member by pipe clamp, lead-rubber damping support and reinforcing bar and connects to form.
The lead-rubber damping support is arranged between buried pipeline bottom and the soil structures, and wherein rubber plays the dynamic property that changes structural system, prolongs the building structure effect of natural vibration period, thereby reduces the earthquake response of building.The lead for retractable pencil damper plays and suppresses the big displacement that long period composition in the seismic waves may bring to building, reduces the effect of building power acceleration.
The lead-rubber damping support mainly is made up of rubber layer, middle circle steel plate, end steel plate, connection steel plate and lead for retractable pencil.Rubber layer is clipped between two blocks of middle circle steel plates, and the rubber number of plies is the 15-25 layer, and the rubber layer at two ends is first layer up and down.Middle circle steel plate and lead for retractable pencil are welded to connect, and make lead for retractable pencil, rubber layer and round steel flaggy constitute an integral body; This integral body is fixed with the end steel plate by the connection steel plate at two ends up and down, connects steel plate up and down and is connected by bolt with holding steel plate.
The lead-rubber damping support connects pipe clamp by connecting bolt with the steel plate that is connected on top, buried pipeline and lead-rubber damping support are fixed together.Connecting bolt connects steel plate with the bottom and is connected with cast-in-situ steel reinforced concrete, buried pipeline, lead-rubber damping support and reinforcing bar mix the earth member and form a whole, become the damping control device of underground pipeline structure in subsidence area, common opposing geological process guarantees that the lead-rubber damping support plays certain function of shock insulation to buried pipeline.
Effect of the present invention and benefit are the Securities that this damping control device can improve underground pipeline structure in subsidence area under the geological process, and simple structure, and easy construction is widely used in transformation, reconstruction and the stabilization works of the old town in city.
Description of drawings
Accompanying drawing 1 is a buried pipeline structural damping system schematic representation.
Accompanying drawing 2 is buried pipeline structural damping system joint construction sectional drawings.
Accompanying drawing 3 is lead-rubber damping support construction plan views.
Accompanying drawing 4 is buried pipeline structural damping system joint construction elevation.
Accompanying drawing 5 is planimetric maps of buried pipeline structural damping system.
Accompanying drawing 6 is local structure figure of neoprene bearing.
Among the figure: 1 soil structures; 2 buried pipelines; 3 lead-rubber damping supports; 4 cast-in-situ steel reinforced concretes;
5 pipe clamps; The connecting bolt of 6 pipe clamps and lead-rubber damping support; The connecting bolt of 7 lead-rubber damping supports and reinforced concrete; 8 rubber layers; 9 middle circle steel plates; 10 end steel plates;
11 connect steel plate; 12 bolts hole that are connected with reinforced concrete; 13 bolts hole that are connected with pipe clamp;
14 each connecting bolts; 15 lead for retractable pencils;
t
0Middle circle steel plate thickness; t
1Individual layer sheet rubber thickness; T bearing thickness;
Embodiment
Be described in detail most preferred embodiment of the present invention below in conjunction with technological scheme and accompanying drawing.
The buried pipeline structural damping system schematic representation that the present invention proposes as shown in Figure 1.Specific practice is at the shown position of structure 2 and 1 on structure lead-rubber damping support 3 to be set, adopt pipe clamp 6 that structure 2 is connected with lead-rubber damping support 3, with reinforced concrete construction 5 and bolt 4 structure 1 and lead-rubber damping support 3 are coupled together, line construction 2 and soil structures 1 and 3 actings in conjunction of lead-rubber damping support make 3 pairs of buried pipeline structures 2 of lead-rubber damping support play certain function of shock insulation when guaranteeing the earthquake generation.
The method that the present invention proposes mainly is to utilize lead-rubber damping support 3 to reach the purpose of dissipation seismic energy with the control structure earthquake response.Its basic principle is: mainly utilize rubber to change the dynamic property of structural system, prolong the building structure effect of natural vibration period, reduce the earthquake response of building.Use the lead for retractable pencil damper and suppress the big displacement that long period composition in the seismic waves may bring to building, reduce the effect of building power acceleration, alleviate the earthquake of structure, guarantee that shake back structural system still can move normally with this.
Step. the design of lead-rubber damping support 3
The major function of lead-rubber damping support 3 is to come earthquake energy by rubber and lead for retractable pencil under little shake effect, the position is set as shown in Figure 1.The structure of lead-rubber damping support as shown in Figure 3, mainly by rubber layer, the middle circle steel plate, the end steel plate connects steel plate, lead for retractable pencil is formed.By diameter is that the connecting bolt of 20mm is wide with 0.2m, and the pipe clamp that 0.03m is thick connects with the steel plate that is connected on top, with this buried pipeline and lead-rubber damping support is fixed together.Be that the connecting bolt of 20mm connects steel plate with the bottom and is connected with cast-in-situ steel reinforced concrete by diameter, with buried pipeline, lead-rubber damping support and reinforcing bar mix the earth member and form a whole, common opposing geological process guarantees that the lead-rubber damping support plays certain function of shock insulation to buried pipeline.Buried pipeline, lead-rubber damping support and reinforcing bar mix structural section map that the earth member connects as shown in Figure 2, and elevation as shown in Figure 4.Bolt number that connects between the member and spacing are as shown in Figure 5.
Owing to show the characteristic of nonlinear elastic material during the rubber material compression, can regard the desirable elastic material in chamber as during the horizontal shear distortion, rubber layer in the rubber earthquake isolation support is very thin, and be subjected to the constraint of steel plate, therefore the lateral deformation that produces is also very little, and bearing just has very high vertical rigidity like this.The major advantage of using the lead-rubber damping support is low in simple structure, cost, good endurance, big, the easy construction of compression resistance.
Claims (1)
1. the damping control device of a underground pipeline structure in subsidence area is characterized in that,
This damping control device mixes earth (4) member by pipe clamp (5), lead-rubber damping support (3) and reinforcing bar and connects to form, and lead-rubber damping support (3) is arranged between buried pipeline (2) bottom and the soil structures (1); Lead-rubber damping support (3) comprises rubber layer (8), middle circle steel plate (9), end steel plate (10), connects steel plate (11) and lead for retractable pencil (15); Rubber layer (8) is clipped between two blocks of middle circle steel plates (9), and the rubber number of plies is the 15-25 layer, and the rubber layer at two ends is first layer up and down; Middle circle steel plate (9) is welded to connect with lead for retractable pencil (15), makes lead for retractable pencil (15), rubber layer (8) and round steel flaggy (9) constitute an integral body; The connection steel plate (11) at two ends was fixing with end steel plate (10) about this integral body was passed through, and connected steel plate (11) up and down and was connected by bolt with holding steel plate (10); Lead-rubber damping support (3) connects pipe clamp (5) by connecting bolt (6) with the steel plate (11) that is connected on top, buried pipeline (2) is fixed together with lead-rubber damping support (3); By connecting bolt (7) bottom being connected steel plate (11) is connected with cast-in-situ steel reinforced concrete (4), buried pipeline (2), lead-rubber damping support (3) and reinforcing bar mix earth member (4) and form a whole, and become the damping control device of underground pipeline structure in subsidence area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010203356 CN101886684A (en) | 2010-06-18 | 2010-06-18 | Damping control device of underground pipeline structure in subsidence area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010203356 CN101886684A (en) | 2010-06-18 | 2010-06-18 | Damping control device of underground pipeline structure in subsidence area |
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| CN101886684A true CN101886684A (en) | 2010-11-17 |
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| CN 201010203356 Pending CN101886684A (en) | 2010-06-18 | 2010-06-18 | Damping control device of underground pipeline structure in subsidence area |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162554A (en) * | 2011-04-12 | 2011-08-24 | 中国十九冶集团有限公司 | Method and structure of laying ore pulp pipelines in districts of earthquake fracture zone |
| CN103542174A (en) * | 2013-11-05 | 2014-01-29 | 中国矿业大学 | Pipe laying method for subsidence area of coal mine |
| CN112523075A (en) * | 2020-12-04 | 2021-03-19 | 沈阳建筑大学 | Shock insulation support with anti-corrosion performance |
| US11332936B1 (en) | 2019-11-12 | 2022-05-17 | Newtonoid Technologies, L.L.C. | Rebar support chair |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2346839Y (en) * | 1998-07-22 | 1999-11-03 | 西安建筑科技大学 | Self-damping laminated rubber shake isolating appts. |
| JP2004011213A (en) * | 2002-06-05 | 2004-01-15 | Shimizu Corp | Seismic isolator and its mounting structure |
| CN2685419Y (en) * | 2004-03-16 | 2005-03-16 | 广州大学 | Sandwich rubber antivibrating support |
| KR100659397B1 (en) * | 2006-06-21 | 2006-12-20 | 주식회사 한국종합기술 | Connecting structure of drainpipe can be stand pressure |
| CN201306028Y (en) * | 2008-12-10 | 2009-09-09 | 山东美晨科技股份有限公司 | Building shock insulation rubber support |
-
2010
- 2010-06-18 CN CN 201010203356 patent/CN101886684A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2346839Y (en) * | 1998-07-22 | 1999-11-03 | 西安建筑科技大学 | Self-damping laminated rubber shake isolating appts. |
| JP2004011213A (en) * | 2002-06-05 | 2004-01-15 | Shimizu Corp | Seismic isolator and its mounting structure |
| CN2685419Y (en) * | 2004-03-16 | 2005-03-16 | 广州大学 | Sandwich rubber antivibrating support |
| KR100659397B1 (en) * | 2006-06-21 | 2006-12-20 | 주식회사 한국종합기술 | Connecting structure of drainpipe can be stand pressure |
| CN201306028Y (en) * | 2008-12-10 | 2009-09-09 | 山东美晨科技股份有限公司 | Building shock insulation rubber support |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162554A (en) * | 2011-04-12 | 2011-08-24 | 中国十九冶集团有限公司 | Method and structure of laying ore pulp pipelines in districts of earthquake fracture zone |
| CN102162554B (en) * | 2011-04-12 | 2013-03-06 | 中国十九冶集团有限公司 | Method and structure of laying ore pulp pipelines in districts of earthquake fracture zone |
| CN103542174A (en) * | 2013-11-05 | 2014-01-29 | 中国矿业大学 | Pipe laying method for subsidence area of coal mine |
| CN103542174B (en) * | 2013-11-05 | 2015-11-18 | 中国矿业大学 | A kind of Subsidence Land in Coal Mining Area Pipe-lining methods |
| US11332936B1 (en) | 2019-11-12 | 2022-05-17 | Newtonoid Technologies, L.L.C. | Rebar support chair |
| CN112523075A (en) * | 2020-12-04 | 2021-03-19 | 沈阳建筑大学 | Shock insulation support with anti-corrosion performance |
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Open date: 20101117 |