CN101906883B - Replacing method of shock-insulation supporting seat - Google Patents

Replacing method of shock-insulation supporting seat Download PDF

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Publication number
CN101906883B
CN101906883B CN201010231810XA CN201010231810A CN101906883B CN 101906883 B CN101906883 B CN 101906883B CN 201010231810X A CN201010231810X A CN 201010231810XA CN 201010231810 A CN201010231810 A CN 201010231810A CN 101906883 B CN101906883 B CN 101906883B
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shock
isolating pedestal
shock isolating
buttress
replaced
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CN101906883A (en
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唐际宇
安晓文
束伟农
宋廷苏
戈祥林
张勋胜
刘涛
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China Construction Eighth Engineering Division Co Ltd
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AN EARGHQUAKE SHOCK OF YUNNAN SCIENCE AND TECHNOLOGY CO LTD
China Construction Eighth Engineering Division Co Ltd
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Abstract

The invention provides a replacing method of a shock-insulation supporting seat, comprising the following steps of: (1) measuring and positioning the bolt positions of an upper flange plate and a lower flange plate of the shock-insulation supporting seat to be replaced; (2) manufacturing a new shock-insulation supporting seat, and punching on the corresponding positions of the upper flange plate and the lower flange plate according to the measured bolt positions; (3) jacking an upper buttress of the shock-insulation supporting seat to be replaced; (4) pulling the shock-insulation supporting seat to be replaced out of an original position; (5) carrying the new shock-insulation supporting seat to an installation position, and installing and fixing; and (6) unloading the jacked upper buttress. The replacing method has the advantages of low cost, easy and convenient operation, safety, reliability and greatly-shortened construction period.

Description

Replacing method of shock-insulation supporting seat
Technical field
The present invention relates to a kind of building seismic isolation technology, particularly a kind of replacing method of shock-insulation supporting seat.
Background technology
Earthquake is one of the most serious natural calamity of facing of human society, " earthquake disaster mitigation " become the problem of a World Focusing, particularly " 5.12 " Wenchuan violent earthquake, caused the loss of huge property and people's life, this research to seismic isolation technology, development and application have proposed great urgency and necessity.The rubber pad seismic isolation technology is popular in the world earthquake resistant engineering new technology, and it " separates superstructure and basis " by shock-absorbing and energy-dissipating device (rubber earthquake isolation support) being placed between works bottom and the basis (or bottom capital).Like this, change dynamic Characteristics of Structure and dynamic action, alleviated the earthquake response of works significantly, reached the effect of " defeating a force with a tenderness ".
The basic principle of neoprene bearing shock insulation is by setting up neoprene bearing, being prolonged the natural vibration period of whole building, to alleviate the earthquake response of superstructure.Its general way is in the building bottom shock isolating pedestal to be set, utilize the horizontal flexibility of shock isolating pedestal to form flexible shock insulation layer together, absorb and the dissipation seismic energy by flexible shock insulation layer, prevention also alleviates the transmission of seismic energy to superstructure, finally reaches the purpose that alleviates the superstructure seismic damage.
See also Fig. 1, it is the structural representation of existing a kind of shock isolating pedestal, shock isolating pedestal 10 is arranged between buttress 11 and the following buttress 12, pre-buried sleeve 13 and dowel 14 between last buttress 11 and the following buttress 12, for preventing that sleeve 13 and dowel 14 from producing skew when the concreting, both sides upper flange plate and lower flange plate are set at shock isolating pedestal respectively about in the of 10, and offer on upper flange plate and the lower flange plate and sleeve 13, the corresponding bolt hole in dowel 14 positions, be used for fixing sleeve 13 and dowel 14.
Yet if when needing to change shock isolating pedestal in work progress, problems can appear in (for example rubber temperature in sulfidation does not reach standard value, and the cure time deficiency, causes shock isolating pedestal rubber to occur and plays quality problems such as drum):
1, when changing shock isolating pedestal, because under the upper load effect, shock isolating pedestal may form to a certain degree vertical compressive strain and horizontal movement, cause new shock isolating pedestal bolt hole can't with the bolt hole correspondence on the buttress up and down, make new shock isolating pedestal be difficult to installation in position, and consider when changing shock isolating pedestal and can exert an influence superstructure, particularly to the influence of concrete structure floor, safety during in order to ensure construction, when changing shock isolating pedestal, can destroy at present the top concrete floor, thereby increased extra consumptive material, and can prolong the duration greatly.
2, need the shock isolating pedestal of replacing that certain decrement is arranged under the upper load effect, in the process of superstructure jacking, can rebound by nature,, will increase the displacement of floor jacking, concrete structure is formed threat if do not take measures.
Summary of the invention
The purpose of this invention is to provide a kind of replacing method of shock-insulation supporting seat, solving at present when changing shock isolating pedestal, the cost height, long in time limit, damage the problem of top concrete structure easily.
The present invention proposes a kind of replacing method of shock-insulation supporting seat, may further comprise the steps: (1) carries out measurement and positioning to the bolt position of the flanged plate up and down of shock isolating pedestal to be replaced.(2) make new shock isolating pedestal, and according to the bolt position that measures, relevant position perforate on the flanged plate of new shock isolating pedestal.(3) the last buttress of jacking shock isolating pedestal to be replaced.(4) shock isolating pedestal to be replaced is pulled out original position.(5) new shock isolating pedestal is transported to the installation site, and installs and fixes.(6) the last buttress to jacking unloads.
According to the described replacing method of shock-insulation supporting seat of preferred embodiment of the present invention, before buttress on the jacking shock isolating pedestal to be replaced, weld the upper flange plate and the lower flange plate of shock isolating pedestal to be replaced fixing.
According to the described replacing method of shock-insulation supporting seat of preferred embodiment of the present invention, during the last buttress of jacking shock isolating pedestal to be replaced, the last buttress of the periphery of jacking simultaneously shock isolating pedestal.
According to the described replacing method of shock-insulation supporting seat of preferred embodiment of the present invention, during the last buttress of jacking shock isolating pedestal to be replaced, according to 100 tons be the mode of one-level, load step by step.
According to the described replacing method of shock-insulation supporting seat of preferred embodiment of the present invention, during the last buttress of jacking periphery shock isolating pedestal, according to 50 tons be the mode of one-level, load step by step.
According to the described replacing method of shock-insulation supporting seat of preferred embodiment of the present invention, buttress specifically may further comprise the steps in the jacking: (1) lays steel plate with the top and the bottom of a plurality of jack.(2) between last buttress and following buttress, set up jack, and jack is positioned on the stressed central axis of making a concerted effort of buttress.(3) by buttress in the jack jacking.
According to the described replacing method of shock-insulation supporting seat of preferred embodiment of the present invention, shock isolating pedestal to be replaced is pulled out original position specifically may further comprise the steps: (1) lays tin plate along the direction that shifts out of shock isolating pedestal to be replaced.(2) be coated with silicone oil at the tin plate upper surface.(3) be coated with silicone oil at lower flange plate side.(4) shock isolating pedestal to be replaced is pulled out original position along tin plate.
According to the described replacing method of shock-insulation supporting seat of preferred embodiment of the present invention, the height of last buttress jacking is no more than 1/800 of girder span.
According to the described replacing method of shock-insulation supporting seat of preferred embodiment of the present invention, shock isolating pedestal to be replaced is being pulled out original position, and new shock isolating pedestal is transported to also comprising step before the installation site: hindering position that shock isolating pedestal moves on the direction and play cutter and polish entering and shifting out.
With respect to prior art, the present invention has the following advantages:
1, the invention solves shock isolating pedestal because of big horizontal movement, and in replacing, be difficult to a difficult problem of locating, and by the shock isolating pedestal of needs replacing is measured, customize the new shock isolating pedestal that bolt hole is complementary, guarantee that shock isolating pedestal can be accurately in place, make the replacing operation easy, safe and reliable, thereby also need not the upper strata beam slab of shock isolating pedestal is destroyed, saved material cost, shortened the duration greatly.
2, the method that flanged plate welded with two block plates about the present invention had taked to incite somebody to action, effectively prevented the naturally bounce-back of shock isolating pedestal in last buttress jacking process, avoid adverse effect that concrete structure is produced with the structure top lifting height of minimum, improved working security.
3, the present invention is in the jacking process of last buttress, main buttress according to 100 tons for one-level loads, peripheral buttress according to 50 tons for one-level loads, loading procedure is incremental, and is safe and reliable.
Description of drawings
Fig. 1 is the structural representation of existing a kind of shock isolating pedestal;
Fig. 2 is a kind of embodiment flow chart of replacing method of shock-insulation supporting seat of the present invention;
A kind of embodiment flow chart of Fig. 3 during for jacking buttress of the present invention;
A kind of embodiment flow chart when Fig. 4 pulls out original position for the present invention with shock isolating pedestal to be replaced.
The specific embodiment
Below in conjunction with accompanying drawing, specify the present invention.
See also Fig. 2, it is for a kind of embodiment flow chart of replacing method of shock-insulation supporting seat of the present invention, and it may further comprise the steps:
S201 carries out measurement and positioning to the bolt position of the flanged plate up and down of shock isolating pedestal to be replaced.
S202 makes new shock isolating pedestal, and according to the bolt position that measures, relevant position perforate on flanged plate.
S203, the last buttress of jacking shock isolating pedestal to be replaced.
For in the control jacking process to may destroying that the top concrete structure causes, the height of strict control jacking be no more than 1/800 of girder span, promptly top lifting height is no more than 1/800 of distance between the adjacent shock isolating pedestal.
S204 pulls out original position with shock isolating pedestal to be replaced.
S205 is transported to the installation site with new shock isolating pedestal, and installs and fixes.
S206 unloads the last buttress of jacking.
Replacing method of the present invention begin the construction in, the construction of some concrete structures may be finished or be carried out on shock isolating pedestal top to be replaced, thereby need stop the operation in shock isolating pedestal to be replaced zone.
At first to carry out measurement and positioning (step 201) to the bolt position of the flanged plate up and down of shock isolating pedestal to be replaced, this step mainly is for the suitable new shock isolating pedestal of follow-up making, because horizontal movement to a certain degree may take place (as 30~80mm) in shock isolating pedestal to be replaced, and the new shock isolating pedestal of making does not have horizontal movement, therefore when measuring, need to measure the horizontal offset between upper flange plate and the lower flange plate respectively, thereby offer the position of bolt hole just can obtain to make new shock isolating pedestal the time.Simultaneously, also can will descend the axis of buttress to mark, and with the position on upper flange plate and lower flange plate four limits with line of ink marker mark to buttress up and down, so that correctly control new installation site.
Just can customize new shock isolating pedestal (step 202) according to the bolt position that measures then, the bolt hole position on the flanged plate up and down of new shock isolating pedestal is consistent with the bolt hole position on the buttress up and down.Just can make the bolt installation site of new shock isolating pedestal corresponding by this step, overcome an installation difficult problem that causes because of horizontal movement, can more conveniently exactly new shock isolating pedestal be fixed to up and down between the buttress with shock isolating pedestal to be replaced.
After new shock isolating pedestal is made and finished, just can treat the last buttress of change place and implement jacking (step 203).Because the shock isolating pedestal that needs to change has certain decrement under the upper load effect, meeting nature bounce-back in the process of superstructure jacking if do not take measures, will increase the displacement of floor jacking, concrete structure be formed threaten.For this reason, the present invention can take method that flanged plate is up and down welded with two block plates, thereby shock isolating pedestal can not rebounded before buttress in the jacking, had also guaranteed as far as possible little jacking distance.
In addition, can not be damaged in order to ensure the top concrete structure, reduce the whole deformation quantity of top concrete structure, can be to the together jacking of last buttress of main buttress (the last buttress that refers to shock isolating pedestal to be changed position) and peripheral shock isolating pedestal position, see also Fig. 3, the process of jacking can specifically may further comprise the steps:
S301 lays steel plate with the top and the bottom of a plurality of jack.Steel plate will be provided with bigger size, with the contact area between increase jack and top beam and the bottom buttress, thereby reduces the compressive stress that concrete bore.
S302 sets up jack between last buttress and following buttress, and jack is positioned on the stressed central axis of making a concerted effort of buttress.And for preventing that main jack lost efficacy, and can be equipped with the standby jack of protection usefulness.
S303, the diagonal orientation between last buttress and following buttress is provided with two displacement meters respectively.In order to measure the jack-up height of buttress, can lay 4 of displacement meters in the diagonal orientation of buttress, each bight is laid two, and a displacement meter is measured buttress deflection down, and another one is measured the displacement of going up buttress.
S304, the bolt of flanged plate about the shock isolating pedestal that dismounting needs to change.Bolt on the flanged plate must unload before buttress on the jack-up up and down.And unscrew around the main buttress bolt of all upper flange plates (perhaps lower flange plate) on the cushion cap, but do not unload bolt, otherwise after the last buttress jack-up, bolt is cut, and is difficult to dismantle.
S305 is by buttress in the jack jacking.
The jacking process should be no more than 1/800 of girder span by the strict height of controlling jacking.During jacking master buttress, according to 100 tons be the mode of one-level, load step by step, during the last buttress of jacking periphery shock isolating pedestal, according to 50 tons be the mode of one-level, load step by step.As calculated, if when main buttress top lifting height is controlled at 10mm, auxiliary buttress then should be controlled at 3mm.
This process loading speed must be slow, under this state, last buttress and between shearing be to transmit by the frictional force between concrete and the steel plate, therefore, along with reducing of shock isolating pedestal pressure, frictional force also reduces gradually, when frictional force when keeping the shearing of distortion, the upper flange plate may resilience, thereby this process will be taken care.
In the jacking process,, just shock isolating pedestal to be replaced can be pulled out original position (step S204) if shock isolating pedestal and last buttress break away from.Whether buttress bottom surface and upper flange plate top surface throw off on can detecting by an unaided eye.If throw off, then use bottle gouard moved by hands to draw shock isolating pedestal, if can be pulled, then will be pulled away from original position; As stretchy not, then carry out next stage and load, until being pulled.The process of pulling out will keep shock isolating pedestal outwards to shift out according to straight line as far as possible, if deflection be should give correction more greatly.Specifically, as shown in Figure 4, shock isolating pedestal to be replaced is pulled out original position can be may further comprise the steps:
S401 hinders the position that shock isolating pedestal moves and plays cutter and polishing shifting out on the direction.
S402 lays tin plate along the direction that shifts out of shock isolating pedestal to be replaced.
S403 is coated with silicone oil at the tin plate upper surface.
S404 is coated with silicone oil at lower flange plate side.
S405 pulls out original position with shock isolating pedestal to be replaced along tin plate.
When the shock isolating pedestal of need changing is pulled out, just new shock isolating pedestal can be transported to the installation site, and install and fix (step S205).It should be noted that in order to guarantee working security, before the shock isolating pedestal that need are changed is not completely pulled out of, just new shock isolating pedestal can be moved into the installation site and fix.In the process of installing, equally also need to play cutter and polish, can move new shock isolating pedestal to installation site by bottle gouard moved by hands then hindering position that shock isolating pedestal moves on the approach axis, and lock bolt.After new shock isolating pedestal installs, just can old shock isolating pedestal fork be put on the ground by electri forklift.
At last, be that the last buttress to each jacking unloads (step S206), and finish the replacing work progress of whole shock isolating pedestal.
Replacing method by shock isolating pedestal of the present invention, solved well because of shock isolating pedestal the problem that location difficulty is changed in vertical compression and horizontal movement has taken place, guaranteed that shock isolating pedestal is accurately in place, avoided adverse effect that concrete structure is produced with the structure top lifting height of minimum, easy and simple to handle, safe and reliable, cost is lower.
More than disclosed only be several specific embodiment of the present invention, but the present invention is not limited thereto, any those skilled in the art can think variation, all should drop in protection scope of the present invention.

Claims (9)

1. a replacing method of shock-insulation supporting seat is characterized in that, may further comprise the steps:
Bolt position to the flanged plate up and down of shock isolating pedestal to be replaced carries out measurement and positioning;
Make new shock isolating pedestal, and according to the bolt position that measures, relevant position perforate on the flanged plate of new shock isolating pedestal;
The last buttress of jacking shock isolating pedestal to be replaced;
Shock isolating pedestal to be replaced is pulled out original position;
New shock isolating pedestal is transported to the installation site, and installs and fixes;
Last buttress to jacking unloads.
2. replacing method of shock-insulation supporting seat as claimed in claim 1 is characterized in that, before buttress on the jacking shock isolating pedestal to be replaced, welds the upper flange plate and the lower flange plate of shock isolating pedestal to be replaced fixing.
3. replacing method of shock-insulation supporting seat as claimed in claim 1 is characterized in that, during the last buttress of jacking shock isolating pedestal to be replaced, and the last buttress of the periphery of jacking simultaneously shock isolating pedestal.
4. as claim 1 or 3 described replacing method of shock-insulation supporting seat, it is characterized in that, during the last buttress of jacking shock isolating pedestal to be replaced, according to 100 tons be the mode of one-level, load step by step.
5. replacing method of shock-insulation supporting seat as claimed in claim 3 is characterized in that, during the last buttress of jacking periphery shock isolating pedestal, according to 50 tons be the mode of one-level, load step by step.
6. replacing method of shock-insulation supporting seat as claimed in claim 1 is characterized in that buttress specifically may further comprise the steps in the jacking:
Steel plate is laid in the top and the bottom of a plurality of jack;
Between last buttress and following buttress, set up jack, and jack is positioned on the stressed central axis of making a concerted effort of buttress;
By buttress in the jack jacking.
7. replacing method of shock-insulation supporting seat as claimed in claim 1 is characterized in that, shock isolating pedestal to be replaced is pulled out original position specifically may further comprise the steps:
The direction that shifts out along shock isolating pedestal to be replaced is laid tin plate;
Be coated with silicone oil at the tin plate upper surface;
Be coated with silicone oil at lower flange plate side;
Shock isolating pedestal to be replaced is pulled out original position along tin plate.
8. replacing method of shock-insulation supporting seat as claimed in claim 1 is characterized in that, the height of last buttress jacking is no more than 1/800 of girder span.
9. replacing method of shock-insulation supporting seat as claimed in claim 1, it is characterized in that, shock isolating pedestal to be replaced is being pulled out original position, and new shock isolating pedestal is transported to also comprising step before the installation site: hindering position that shock isolating pedestal moves on the direction and play cutter and polish entering and shifting out.
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CN102605965B (en) * 2011-12-31 2014-07-30 北京筑福国际工程技术有限责任公司 Installation and underpinning method of brick-concrete structured isolation bearings
CN104294858B (en) * 2014-10-24 2016-05-04 中国海洋石油总公司 A kind of replacing method of easily changeable LNG storage pot shock insulation pad
CN104453268B (en) * 2014-11-11 2016-08-24 云南震安减震技术有限公司 A kind of method using section steel beam to change shock insulation rubber bearing
CN104863380B (en) * 2015-05-20 2017-01-25 中建三局第二建设工程有限责任公司 Overall replacement system for original building shock-insulation support and construction method
CN105544762A (en) * 2015-12-21 2016-05-04 广州机施建设集团有限公司 Method for installing seismic isolation layer
CN106869518B (en) * 2017-03-21 2019-06-14 中国建筑标准设计研究院有限公司 Shock isolating pedestal jacking apparatus and the construction method for replacing shock isolating pedestal
CN107476632B (en) * 2017-09-07 2019-03-29 北京城建集团有限责任公司 The method for controlling construction period shock isolating pedestal or more flanged plate relative horizontal displacement
CN110644804A (en) * 2019-09-27 2020-01-03 河北宝力工程装备股份有限公司 Replacement method for shock isolation device
CN112128616B (en) * 2020-09-11 2022-07-05 广州大学 Shock insulation support suitable for LNG storage tank and installation method thereof
CN113503029A (en) * 2021-07-20 2021-10-15 广州大学 Construction method of assembled energy dissipation buttress connection node
CN113982302B (en) * 2021-10-11 2023-04-18 河北省建筑科学研究院有限公司 Undisturbed replacement construction method for existing seismic isolation building seismic isolation support
CN114086808A (en) * 2021-12-02 2022-02-25 北京城建集团有限责任公司 Construction method of large-size elastic sliding plate support structure arranged on column

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Patentee after: China Construction Eighth Engineering Division Co., Ltd.

Address before: 200135 Shanghai City, Pudong New Area source deep road, No. 269

Co-patentee before: Yunnan Zhen An damping Science and Technology Co., Ltd.

Patentee before: China Construction Eighth Engineering Division Co., Ltd.