CN102936961A - Shock insulation rubber support installing process - Google Patents
Shock insulation rubber support installing process Download PDFInfo
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- CN102936961A CN102936961A CN2012104652274A CN201210465227A CN102936961A CN 102936961 A CN102936961 A CN 102936961A CN 2012104652274 A CN2012104652274 A CN 2012104652274A CN 201210465227 A CN201210465227 A CN 201210465227A CN 102936961 A CN102936961 A CN 102936961A
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- embedded board
- shock insulation
- insulation rubber
- concrete
- buttress
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Abstract
The invention discloses shock insulation rubber support installing process which includes steps of concrete preparation, first pouring of a lower buttress support, installing of a lower pre-burying board, second pouring of the lower buttress support, installing of a shock insulation support and an upper pre-burying board, pouring of an upper buttress support and the like. During construction, the size of the lower buttress support is determined by lengthening each side of the lower pre-burying board by 250-295 mm, locating of the lower pre-burying board is conducted through a leveling instrument and a theodolite, and a plurality of vibrating spears are adopted for vibrating. The shock insulation rubber support installing process has the advantages of being capable of improving the levelness of the lower pre-burying board and the precision of locating size, enabling filling volume of concrete of the lower pre-burying board to be 100% and improving installing quality of the shock insulation rubber support.
Description
Technical field
The present invention relates to building engineering field, be specifically related to a kind of shock insulation rubber bearing mounting process.
Background technology
Earthquake is the most serious of facing mankind, one of natural calamity that is difficult to protect most, and earthquake disaster mitigation has become the problem that obtains extensive concern in the world wide.Particularly Wenchuan violent earthquake has caused huge life and property loss, this to researching and proposing of construction work seismic isolation technology urgent requirement.
Shock insulation rubber bearing is a kind of earthquake isolating equipment that is widely used in building field, and its main body is formed by stacking repeatedly by vulcanized rubber and sandwich clad steel.Shock insulation rubber bearing is arranged on the bottom of building usually, and the abundant absorbing vibration of energy drops to below 40% the acceleration of building when earthquake, plays good function of shock insulation.
But shock insulation rubber bearing is very high to the requirement of installing, and in work progress, usually because Rig up error causes shock insulation rubber bearing can not bring into play maximum isolating affection, and might cause shock insulation rubber bearing to lose efficacy.
Existing mounting process has following shortcoming:
1. random large when preparing concrete, the match ratio of concrete can not meet the demands, and its compressive strength, expansion rate and the slump are not suitable for the fixing of shock insulation rubber bearing;
2. descend levelness and the location dimension of embedded board can not reach design load;
3. the spacing of buttress reinforcing bar is too small, and the anchor fixture can't anchor in the buttress;
4. the pouring quality of concrete is low, and its full rate is low.
Summary of the invention
Purpose of the present invention namely is to overcome in the existing technique, the match ratio of concrete can not meet the demands, and the levelness of lower embedded board and location dimension can not reach design load, and the anchor fixture can't anchor in the buttress, the deficiency that the pouring quality of concrete is low provides a kind of shock insulation rubber bearing mounting process.
Purpose of the present invention is achieved through the following technical solutions:
The shock insulation rubber bearing mounting process comprises the steps:
A. concrete is prepared;
B. descend the buttress bearing to pour into a mould for the first time:
C., lower embedded board is installed, is put a spirit level whenever being sidelong of embedded board, lower embedded board is tentatively smoothed, then by transit embedded board is positioned, after finish the location lower embedded board is fixed on the lower buttress longitudinal reinforcement;
D. descend the buttress bearing to pour into a mould for the second time:
E., shock isolating pedestal and upper embedded board are installed;
F. pour into a mould upper buttress bearing.
Preferably, among the described step B, to behind lower buttress reinforcing bar and the muscle lower buttress reinforcing bar be carried out colligation, clean interval 96 ~ 110mm between the lower buttress reinforcing bar, increase the size that 250 ~ 330mm determines lower buttress bearing according to the every side of lower embedded board, reserve the second pouring space, vertical formwork supporting plate, carry out lower buttress bearing with the concrete in the steps A and pour into a mould for the first time, unwrapping wire levelling behind the casting complete.
Preferably, among the described step D, whenever be sidelong into a plurality of vibrating heads at lower embedded board, then adopt the concrete in the steps A to carry out the adding pressure type cast by hopper, simultaneously vibrating head vibration after the venthole on the lower embedded board is discharged, stops cast at concrete; Slowly extract vibrating head out, around lower embedded board, vibrate embedded board under the cleaning after finishing with vibrating head again.
Preferably, in the described steps A, adopt 390 ~ 420kg/m
3Cement, 50 ~ 70kg/m
3Flyash, 620 ~ 650kg/m
3Sand, 1050 ~ 1120kg/m
3Rubble, 140 ~ 180kg/m
3Water and 30 ~ 50kg/m
3Admixture preparation concrete.
Preferably, in the described steps A, adopt 410kg/m
3Cement, 65kg/m
3Flyash, 632kg/m
3Sand, 1098kg/m
3Rubble, 165kg/m
3Water and 48kg/m
3Admixture preparation concrete.
Preferably, described grade of cement for P.042.5 the level, described flyash grade is the I level, the fineness modulus of described sand is 2.5, described rubble is continuous size fraction, maximum gauge is 25mm, crush values is 7.8.
Preferably, among the described step B, lower buttress reinforcing bar and muscle quantity are not more than 3.
Preferably, among the described step B, before for the first time cast, the moistening template of water.
Preferably, among the described step D, whenever be sidelong into 2 ~ 3 vibrating heads at lower embedded board.
Preferably, among the described step D, water is moistening by the cast position before the cast, puts into the cement paste identical with the concrete composition of steps A in constuction joint.
Advantage of the present invention and beneficial effect are:
1. by spirit level and transit lower embedded board is positioned, guarantee location dimension and the planeness of lower embedded board, improved the installation accuracy of time embedded board;
2. by the proportioning of concrete among the present invention, the expansion rate of the concrete that obtains is 0.03%, and compressive strength is 52.6Mpa, the slump 200 ~ 220mm than ordinary concrete, has better bit shift compensation effect, be applicable to the fixing of shock insulation rubber bearing, the dimensional accuracy that embedded board is installed under the Effective Raise can be arranged;
3. increase the size that 250 ~ 295mm determines lower buttress bearing according to the every side of lower embedded board, when making second pouring, can insert many vibrating heads, improve the flowability of concrete, cooperate the adding pressure type cast, steam vent is discharged gas in the concrete, the problem of filling volume deficiency when having solved second pouring;
4. before the second pouring, in constuction joint, put into cement paste, can increase the adhesion of new and old concrete;
5. pass through and muscle, adjust the spacing of buttress reinforcing bar, in the situation that guarantees buttress intensity, guarantee that the anchor fixture can loosely anchor in the buttress exactly.
The specific embodiment
In order to make those skilled in the art understand better the present invention, the below will carry out clear, complete description to the technical scheme in the embodiment of the invention.Apparent, embodiment described below only is the part in the embodiment of the invention, rather than all.Based on the embodiment of the present invention's record, other all embodiment that those skilled in the art obtain in the situation of not paying creative work are all in the scope of protection of the invention.
Embodiment:
The shock insulation rubber bearing mounting process comprises the steps:
A. concrete preparation: concrete is prepared, contained 410kg/m in the concrete that obtains
3Cement, 65kg/m
3Flyash, 632kg/m
3Sand, 1098kg/m
3Rubble, 165kg/m
3Water and 48kg/m
3Admixture, wherein grade of cement for P.042.5 the level, the flyash grade is the I level, the fineness modulus of sand is 2.5, and rubble is continuous size fraction, and maximum gauge is 25mm, crush values is 7.8, and Admixture is the JM-III composite additive that Jiangsu Province's building science is researched and produced.To make the 28d mark with the concrete of said ratio preparation and support experiment, it is 52.6Mpa that experiment obtains its compressive strength average, and expansion rate is 0.03%, and also obtaining by experiment its slump is 210 ~ 220mm.These parameters is closed the fixedly requirement of symbol shock insulation rubber bearing fully.
B. descend the buttress bearing to pour into a mould for the first time: lower embedded board commonly used has 24 anchor fixtures, the bed-plate dimension of maximum anchor fixture is 95mm*95mm, and the standard clear spacing of lower buttress reinforcing bar is 36mm, can't satisfy the anchor fixture and anchor into requirement in the lower buttress pedestal beam.
In order to address the above problem, in the present embodiment, to behind lower buttress reinforcing bar and the muscle lower buttress reinforcing bar be carried out colligation, the maximum radical of lower buttress reinforcing bar and muscle is 3, clean interval 100mm between the lower buttress reinforcing bar, like this under not affecting in the situation of buttress bearing intensity, so that lower embedded board can loosely anchor in the lower buttress bearing exactly.
In in the past construction, the size of the size of lower buttress bearing and lower embedded board is basic identical, this is so that when cast, can only insert a vibrating head by the plug hole on the lower embedded board, in the 300mm sphere of action, the peripheral nearly 1m scope of plug hole can't be vibrated around the scope of vibrating was only limited in and builds mouthful.Strengthen without concrete internal drag under the External Force Acting, plasticity reduces, concrete loses flowability, container discharge mouth mortar in the lower concrete that vibrates for a long time leaks into rest base, discharging opening is stopped up by stone, so just causes the quality problems of concrete filling volume deficiency under the lower embedded board.
For addressing the above problem, increase the size that 295mm determines lower buttress bearing according to the every side of lower embedded board, if undersized then be not easy to put into enough vibrating heads, as oversize, then need the vibrate flowability of guarantee concrete of more vibrating head, improved cost.Offer a plurality of ventholes at lower embedded board, increase 100mm according to the degree of depth of anchor fixture and reserve the second pouring space, vertical formwork supporting plate, water is moistening to carry out lower buttress bearing with the concrete in the steps A and pours into a mould for the first time unwrapping wire levelling behind the casting complete afterwards.
C., lower embedded board is installed: in the interval between the lower buttress reinforcing bar of anchor fixture insertion of lower embedded board, and by height adjustment bolt with the Corner Strapped of embedded board on locating rack, put a spirit level whenever being sidelong of embedded board, lower embedded board is tentatively smoothed, then regulate height adjustment bolt and cooperate transit that embedded board is positioned, by connector lower embedded board is welded on the lower buttress longitudinal reinforcement after finish the location.Detection obtains, the axial location deviation＜3mm of lower embedded board location, absolute altitude deviation＜5mm, planeness deviation＜1/300, the positioning requirements of embedded board under satisfying fully.
D. descend the buttress bearing to pour into a mould for the second time: support is set, at support hopper is installed, the discharging opening of hopper is aimed at the plug hole of lower embedded board.In cast front 10 hours, water was moistening by the cast position, reduces the concrete slump loss, the concrete that reduces newly to build and template, former concrete resistance.Before cast, in constuction joint, put into the cement paste identical with the concrete composition of steps A, improve the affinity of new and old concrete.Whenever be sidelong into 2 ~ 3 vibrating heads at lower embedded board, put into a vibrating head by the plug hole of lower embedded board, then adopt the concrete in the steps A to carry out the adding pressure type cast by hopper, vibrating head vibrates simultaneously, vibrating time should be decided according to quantity and the speed of blanking, prevents the concrete segregation.The quantity of vibrating head can be adjusted according to the practice of construction situation.When vibrating in the concrete bubble discharge along venthole, prevent between concrete and embedded board gapped.After venthole is discharged, stop cast at concrete; Slowly extract vibrating head out, vibrate around lower embedded board with vibrating head, distance a 300 ~ 400mm vibrates; Embedded board under the cleaning after finishing causes 80% intensity with the maintenance of lower buttress bearing.Through detecting, gapless between plate and concrete fills rate 100%, and the bearing concrete is without defectives such as honeycomb, pitted skins.
E., shock isolating pedestal and upper embedded board are installed: the shock isolating pedestal lifting is caused on the lower embedded board, then by torque spanner shock isolating pedestal is fixed, then by torque spanner upper embedded board is fixed on the shock isolating pedestal.
F. pour into a mould upper buttress bearing: buttress bearing reinforcing bar in the colligation, vertical formwork supporting plate, buttress bearing in the cast.
G. tail worker: stripping, brushing anti-corrosion material.
After finishing according to above-mentioned construction technology, through 3 months, shock insulation rubber bearing is checked, the vertical compressive strain 1.2mm of shock insulation rubber bearing (2 times of pressure tests, compressed value 3mm) and service behaviour good, building overall height perpendicularity deviation 16mm is consistent with the front measured value that is completed, bearing place beam column concrete free from flaw.
What deserves to be explained is: clean interval can be any value between 96 ~ 110mm between the lower buttress reinforcing bar, can both realize that lower embedded board can loosely anchor into mother in the lower buttress bearing, preferred 100mm in the present embodiment exactly; The size of lower buttress bearing can be to increase any value between 250 ~ 330mm according to the every side of lower embedded board, and preferred 295mm can access best effect in the present embodiment; The content of each component ratio can be selected in following digital scope in the concrete: 390 ~ 420kg/m
3Cement, 50 ~ 70kg/m
3Flyash, 620 ~ 650kg/m
3Sand, 1050 ~ 1120kg/m
3Rubble, 140 ~ 180kg/m
3Water and 30 ~ 50kg/m
3Admixture, selecting the each several part content in the above-mentioned scope all is that reasonably each constituent content of selecting in the present embodiment is 410kg/m
3Cement, 65kg/m
3Flyash, 632kg/m
3Sand, 1098kg/m
3Rubble, 165kg/m
3Water and 48kg/m
3Admixture, to obtain best effect.
Can seem, by implementing the present invention, can guarantee the precision that shock insulation rubber bearing is installed, the performance of shock insulation rubber bearing is brought into play fully.
As mentioned above, just can realize preferably the present invention.
Claims (10)
1. the shock insulation rubber bearing mounting process is characterized in that, comprises the steps:
A. concrete is prepared;
B. descend the buttress bearing to pour into a mould for the first time:
C., lower embedded board is installed, is put a spirit level whenever being sidelong of embedded board, lower embedded board is tentatively smoothed, then by transit embedded board is positioned, after finish the location lower embedded board is fixed on the lower buttress longitudinal reinforcement;
D. descend the buttress bearing to pour into a mould for the second time:
E., shock isolating pedestal and upper embedded board are installed;
F. pour into a mould upper buttress bearing.
2. shock insulation rubber bearing mounting process according to claim 1, it is characterized in that: among the described step B, to behind lower buttress reinforcing bar and the muscle lower buttress reinforcing bar be carried out colligation, clean interval 96 ~ 110mm between the lower buttress reinforcing bar, increase the size that 250 ~ 330mm determines lower buttress bearing according to the every side of lower embedded board, reserve the second pouring space, vertical formwork supporting plate, carry out lower buttress bearing with the concrete in the steps A and pour into a mould for the first time, unwrapping wire levelling behind the casting complete.
3. shock insulation rubber bearing mounting process according to claim 1, it is characterized in that: among the described step D, whenever be sidelong into a plurality of vibrating heads at lower embedded board, then adopt the concrete in the steps A to carry out the adding pressure type cast by hopper, simultaneously vibrating head vibration, after the venthole on the lower embedded board is discharged, stop cast at concrete; Slowly extract vibrating head out, around lower embedded board, vibrate embedded board under the cleaning after finishing with vibrating head again.
4. shock insulation rubber bearing mounting process according to claim 1 is characterized in that: in the described steps A, adopt 390 ~ 420kg/m
3Cement, 50 ~ 70kg/m
3Flyash, 620 ~ 650kg/m
3Sand, 1050 ~ 1120kg/m
3Rubble, 140 ~ 180kg/m
3Water and 30 ~ 50kg/m
3Admixture preparation concrete.
5. shock insulation rubber bearing mounting process according to claim 4 is characterized in that: in the described steps A, adopt 410kg/m
3Cement, 65kg/m
3Flyash, 632kg/m
3Sand, 1098kg/m
3Rubble, 165kg/m
3Water and 48kg/m
3Admixture preparation concrete.
6. according to claim 4 or 5 described shock insulation rubber bearing mounting processs, it is characterized in that: described grade of cement is level P.042.5, and described flyash grade is the I level, the fineness modulus of described sand is 2.5, described rubble is continuous size fraction, and maximum gauge is 25mm, and crush values is 7.8.
7. shock insulation rubber bearing mounting process according to claim 2, it is characterized in that: among the described step B, lower buttress reinforcing bar and muscle quantity are not more than 3.
8. shock insulation rubber bearing mounting process according to claim 2 is characterized in that: among the described step B, and before for the first time cast, the moistening template of water.
9. shock insulation rubber bearing mounting process according to claim 3 is characterized in that: among the described step D, whenever be sidelong into 2 ~ 3 vibrating heads at lower embedded board.
10. shock insulation rubber bearing mounting process according to claim 3 is characterized in that: among the described step D, water is moistening by the cast position before the cast, puts into the cement paste identical with the concrete composition of steps A in constuction joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104652274A CN102936961A (en) | 2012-11-19 | 2012-11-19 | Shock insulation rubber support installing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104652274A CN102936961A (en) | 2012-11-19 | 2012-11-19 | Shock insulation rubber support installing process |
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| Publication Number | Publication Date |
|---|---|
| CN102936961A true CN102936961A (en) | 2013-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104652274A Pending CN102936961A (en) | 2012-11-19 | 2012-11-19 | Shock insulation rubber support installing process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386531A (en) * | 2015-12-01 | 2016-03-09 | 中国建筑第八工程局有限公司 | Locating device used between buttress and vibration insulation support and construction method thereof |
| CN110761566A (en) * | 2019-10-12 | 2020-02-07 | 北京城建集团有限责任公司 | Mounting method of shock insulation support |
Citations (4)
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|---|---|---|---|---|
| JP2002070943A (en) * | 2000-08-30 | 2002-03-08 | Toyo Tire & Rubber Co Ltd | Slip support device for base isolation |
| KR20020095271A (en) * | 2001-06-14 | 2002-12-26 | 정명호 | Bridge having elasticity-slide base |
| CN102162305A (en) * | 2011-05-16 | 2011-08-24 | 江苏兴邦建工集团有限公司 | Construction process for installing elastic slippage shock isolation support |
| CN102434007A (en) * | 2011-12-21 | 2012-05-02 | 宿迁华夏建设(集团)工程有限公司 | Construction process for installing vibration isolation support among floors |
-
2012
- 2012-11-19 CN CN2012104652274A patent/CN102936961A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002070943A (en) * | 2000-08-30 | 2002-03-08 | Toyo Tire & Rubber Co Ltd | Slip support device for base isolation |
| KR20020095271A (en) * | 2001-06-14 | 2002-12-26 | 정명호 | Bridge having elasticity-slide base |
| CN102162305A (en) * | 2011-05-16 | 2011-08-24 | 江苏兴邦建工集团有限公司 | Construction process for installing elastic slippage shock isolation support |
| CN102434007A (en) * | 2011-12-21 | 2012-05-02 | 宿迁华夏建设(集团)工程有限公司 | Construction process for installing vibration isolation support among floors |
Non-Patent Citations (2)
| Title |
|---|
| 姜大力: "叠层橡胶隔震支座施工技术", 《建筑技术》, no. 02, 15 February 2007 (2007-02-15), pages 94 - 96 * |
| 高行友等: "超大直径叠层橡胶隔震支座安装施工技术", 《江苏科技信息》, no. 01, 25 January 2010 (2010-01-25), pages 39 - 41 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386531A (en) * | 2015-12-01 | 2016-03-09 | 中国建筑第八工程局有限公司 | Locating device used between buttress and vibration insulation support and construction method thereof |
| CN110761566A (en) * | 2019-10-12 | 2020-02-07 | 北京城建集团有限责任公司 | Mounting method of shock insulation support |
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Application publication date: 20130220 |