CN105297620A - Steel plate spherical crown polymer mortar structure support and construction method thereof - Google Patents
Steel plate spherical crown polymer mortar structure support and construction method thereof Download PDFInfo
- Publication number
- CN105297620A CN105297620A CN201510751883.4A CN201510751883A CN105297620A CN 105297620 A CN105297620 A CN 105297620A CN 201510751883 A CN201510751883 A CN 201510751883A CN 105297620 A CN105297620 A CN 105297620A
- Authority
- CN
- China
- Prior art keywords
- polymer mortar
- spherical crown
- steel plate
- bearing
- support body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a steel plate spherical crown polymer mortar structure support and a construction method thereof. The support comprises a support padstone, a support body structure, a beam bottom embedded steel plate and a steel plate spherical crown polymer mortar structure located between the beam bottom embedded steel plate and the support body structure. The beam bottom embedded steel plate, the steel plate spherical crown polymer mortar structure, the support body structure and the support padstone are arranged from top to bottom. The support body structure is a polytetrafluoroethylene sliding plate type rubber support. The steel plate spherical crown polymer mortar structure comprises an upper padding plate, a spherical crown fixed to the upper portion of the middle of the upper padding plate, and a polymer mortar filling layer. The construction method comprises the following steps of 1, installing the beam bottom embedded steel plate, 2, surveying and setting out, 3, constructing the support padstone, 4, installing the support body structure, 5, constructing the steel plate spherical crown polymer mortar structure and 6, installing a main beam. The steel plate spherical crown polymer mortar structure support is reasonable in design, convenient to construct and good in using effect, and the problem that an existing support is prone to connection failure, unsymmetrical pressure and excessively-large partial deformation can be solved.
Description
Technical field
The invention belongs to bridge construction technical field of construction, especially relate to a kind of steel plate spherical crown polymer mortar structural bearings and construction method thereof.
Background technology
Bridge pad is the important component connecting bridge superstructure and bridge substructure, its effect the load of bridge superstructure is delivered to pleasantly, safely bridge substructure (specifically Bridge Pier) to get on, ensure the Free Transform of superstructure under the factor effects such as load, variations in temperature, concrete shrinkage and creep, bridge pad is directly connected to bridge construction operation security and application life simultaneously.
In China, laminated rubber bearing is developed and is used from nineteen sixty-five, so far the use history of existing 25 years, has become a kind of support style that domestic highway and Urban Bridge extensively adopt at present.And, work out in 1988 " slab rubber bearing in Highway Bridge technical condition " (JT3132.2-88), in succession work out again Ministry of Communications's standard such as " slab rubber bearing in Highway Bridge specification series " (JT3132.1-88) and " slab rubber bearing in Highway Bridge mechanical properties test rule " (JT3132.3-90) subsequently, within 1994, revised and promulgated " slab rubber bearing in Highway Bridge standard " (JT/T4-93).
Compared with former steel support, laminated rubber bearing has simple structure, the advantage such as cheap, has enough vertical rigidities, good elasticity and larger shear strain ability, can pressure-bearing vertical load, adapt to the rotation of beam-ends, and there is good function of shock insulation.But investigation in recent years finds, neoprene bearing in product quality, select, install and all there are problems in maintenance etc., the phenomenons such as the aging and cracking of bearing, seat empty, bearing off normal, bearing shear strain are excessive are general and seriously.By analysis, cause the reason of bearing breakage, the first kind is bearing product inherent quality; Another kind of for susceptor design, arrange improper, construction and installation quality and safeguard the factor such as improper.
The requirement of laminated rubber bearing to construction control is higher, and the design accuracy of bearing and pinner, the quality etc. that is correctly in place, robber materials of neoprene bearing all directly affect the application life of neoprene bearing and the operation security of bridge construction.And in practical application, the design accuracy of bridge pad and pinner is difficult to ensure, in addition construction technical staff is to the ignorance of bearing installation quality, very easily causes coming to nothing at the bottom of bearing pad stone out-of-flatness, bearing and beam, the quality problems such as bearing off normal, bearing model and different design.
According to investigations, the serviceability rate of China's neoprene bearing is very low, and a large amount of neoprene bearing is own, and through reaching the degree that must rearrange and change, the bridge that many 1970s and 1980s build, the bearing life-span is most, is badly in need of changing; The bridge built up after the eighties, bearing also progresses into the maintenance interval; Nearly ten years newly-built bridges, due to the reason such as bearing quality, type selecting, layout be unreasonable, the early damage phenomenon of bearing is also very serious.To sum up, neoprene bearing has become the potential safety hazard affecting bridge construction and driving, the difficult problem that Ye Shi highway maintenance management department faces.
Therefore, be badly in need of starting with from each side such as design, structure, material, quality controls, improve existing backed deficiency, develop stressed more rationally, more durable, the Novel base for supporting more easily of constructing of structure, reduce the dependence of existing bearing to design, construction quality, easily there is the problem such as seat empty and local moderate finite deformation in what the existing bearing of effective solution existed, fundamentally improves the application life of bearing.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of steel plate spherical crown polymer mortar structural bearings is provided, simple, the reasonable in design and easy construction of its structure, result of use are good, having the advantages such as input cost is lower, reliable in quality, good endurance, strong adaptability, easily there is the problems such as seat empty, bias voltage, local distortion be excessive in what effectively can solve that existing bearing exists.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of steel plate spherical crown polymer mortar structural bearings, it is characterized in that: comprise the bearing pad stone on the bottom bracing structure being laid in institute's construction bridges, support body structure above bearing pad stone, be embedded in institute's construction bridges girder bottom beam at the bottom of pre-embedded steel slab and the steel plate spherical crown Polymer Mortar structure at the bottom of beam between pre-embedded steel slab and described support body structure, described girder is reinforced concrete beam, and described bearing pad stone is reinforced concrete structure; Described steel plate spherical crown Polymer Mortar structure is positioned at described support body superstructure, at the bottom of described beam, pre-embedded steel slab, described steel plate spherical crown Polymer Mortar structure, described support body structure and bearing pad stone are from top to bottom laid, and described steel plate spherical crown Polymer Mortar structure and described support body structure with bearing pad stone all in parallel laying; Described support body structure is polytetrafluoroethylene (PTFE) teflon slider bearing; Described steel plate spherical crown Polymer Mortar structure comprises at the structural upper padding plate of described support body, is fixed on the spherical crown above in the middle part of upper padding plate and the polymer mortar packed layer by the polymer mortar filling molding be filled at the bottom of upper padding plate and beam between pre-embedded steel slab in cavity, and the top of described spherical crown is propped up and to be withstood on bottom pre-embedded steel slab at the bottom of beam and it is fixed in polymer mortar packed layer.
Above-mentioned a kind of steel plate spherical crown polymer mortar structural bearings, is characterized in that: also comprise the rubber gasket be coated on outside polymer mortar packed layer surrounding, and described rubber gasket pad to be loaded at the bottom of upper padding plate and beam between pre-embedded steel slab.
Above-mentioned a kind of steel plate spherical crown polymer mortar structural bearings, it is characterized in that: pre-embedded steel slab at the bottom of described beam is positioned at directly over described steel plate spherical crown Polymer Mortar structure, described steel plate spherical crown Polymer Mortar structure is positioned at directly over described support body structure, and described support body structure is positioned at directly over bearing pad stone; Described support body structure comprises the lower bolster being fixed on bearing pad stone top, the slide plate being positioned at the neoprene bearing on lower bolster and being laid on neoprene bearing; Described neoprene bearing is positioned at directly over lower bolster, and described slide plate is positioned at directly over lower bolster; Described upper padding plate is positioned at directly over lower bolster, and at the bottom of described beam, pre-embedded steel slab is positioned at directly over lower bolster.
Above-mentioned a kind of steel plate spherical crown polymer mortar structural bearings, is characterized in that: at the bottom of described upper padding plate, lower bolster and beam, pre-embedded steel slab is flat plate; The bottom surface of pre-embedded steel slab at the bottom of described beam is mutually concordant with the beam body bottom surface of its present position place girder; Described lower bolster is fixed on bearing pad stone by steel bonding glue or bolt, and described neoprene bearing adopts epoxide-resin glue to be pasted on lower bolster, and described slide plate adopts epoxide-resin glue to be pasted on neoprene bearing.
Above-mentioned a kind of steel plate spherical crown polymer mortar structural bearings, is characterized in that: described spherical crown is hemispherical steel ball-crown and it is weldingly fixed on upper padding plate.
Above-mentioned a kind of steel plate spherical crown polymer mortar structural bearings, is characterized in that: the overall height of described upper padding plate and spherical crown is 45mm ~ 55mm.
Above-mentioned a kind of steel plate spherical crown polymer mortar structural bearings, it is characterized in that: described polymer mortar is formed by weight the even mix of 300 ︰ 350 ~ 400 ︰ 90 ~ 110 ︰ 9 ~ 11 ︰ 9 ~ 11 by cement, fine sand, epoxy resin, breeze and crosslinking agent, and described crosslinking agent is amine cross-linking agent.
Meanwhile, the invention also discloses a kind of method step simple, realize convenient and that construction effect is good steel plate spherical crown polymer mortar structural bearings construction method, it is characterized in that the method comprises the following steps:
Pre-embedded steel slab at the bottom of step one, beam is installed: carry out in prefabrication process to the girder of institute's construction bridges, the construction steel cricket that needs according to designing in advance is preced with the quantity of polymer mortar structural bearings and the installation position of each steel plate spherical crown polymer mortar structure, bottom girder pre-buried each steel plate spherical crown polymer mortar structural bearings beam at the bottom of pre-embedded steel slab;
The quantity of described steel plate spherical crown polymer mortar structural bearings is multiple;
Step 2, surveying setting-out: after the bottom bracing structure of institute's construction bridges has been constructed, on described bottom bracing structure, carry out surveying setting-out respectively to the installation position of each steel plate spherical crown polymer mortar structure;
Step 3, bearing pad stone are constructed: according to the surveying setting-out result in step 2, on described bottom bracing structure, construct respectively to the bearing pad stone of each steel plate spherical crown polymer mortar structure;
Step 4, support body structure installment: each bearing pad stone of having constructed in step 3 installs described support body structure respectively;
Step 5, steel plate spherical crown Polymer Mortar structure construction: in each support body structure of installation in step 4, described steel plate spherical crown Polymer Mortar structure of constructing respectively;
The work progress of described steel plate spherical crown Polymer Mortar structure is as follows:
The upper padding plate of step 501, band spherical crown is installed: be arranged on by the upper padding plate being fixed with spherical crown above middle part in the described support body structure of installation in step 4;
Step 502, polymer mortar inject: described upper padding plate injects pre-configured described polymer mortar in step 501, obtain polymer mortar grouting layer;
Step 6, erection of main beam, process is as follows:
Step 601, Luo Liang: the girder of pre-embedded steel slab at the bottom of beam is embedded with to bottom and lifts, and girder is fallen, until girder is supported in the described steel plate spherical crown Polymer Mortar structure of multiple described steel plate spherical crown polymer mortar structural bearings, and pre-embedded steel slab at the bottom of each beam pre-buried bottom girder is fitted tightly respectively with the described polymer mortar grouting layer in each steel plate spherical crown Polymer Mortar structure;
Step 602, polymer mortar maintenance: maintenance is carried out to institute's injection of polymer mortar in step 502, after institute's injection of polymer mortar reaches design strength, obtain the polymer mortar packed layer of construction molding, complete the work progress of each steel plate spherical crown polymer mortar structural bearings.
Said method, is characterized in that: the quantity of the spherical crown of steel plate described in step one polymer mortar structural bearings is four, and described girder is case beam; Four described steel plate spherical crown polymer mortar structural bearingses comprise the beam end support below two groups of former and later two beam-ends being supported in girder respectively; Often organize described beam end support and include the described beam end support that two direction across bridge along institute's construction bridges lay, two described beam end supports are respectively and are supported in left side bearing below the girder left and right sides and right side bearing; The left side bearing of beam end support described in two groups is along the vertical bridge of institute's construction bridges to laying, and the right side bearing of beam end support described in two groups is along the vertical bridge of institute's construction bridges to laying;
Bottom bracing structure described in step 2 is bridge pier or abutment, is provided with pinner reinforcing cage in described bearing pad stone, is provided with pier cap reinforcing cage in the pier cap of described bridge pier, is provided with platform cap reinforcing cage in the platform cap of described abutment; Described pinner reinforcing cage and described pier cap reinforcing cage or described cap reinforcing cage are fastenedly connected and are integrated.
Said method, it is characterized in that: before carrying out polymer mortar injection in step 502, first on upper padding plate, paste fixing rubber gasket, then inject described polymer mortar in rubber gasket, the apical side height of described polymer mortar grouting layer is higher than the overhead height of spherical crown.
The present invention compared with prior art has the following advantages:
1, the simple and easy construction of the seat structure adopted, input cost is lower.
2, the bearing short construction period adopted and its construction quality are easy to ensure.
3, the seat structure adopted is reasonable in design, mainly comprise four parts such as pre-embedded steel slab at the bottom of beam, steel plate spherical crown Polymer Mortar structure, support body structure and bearing pad stone, the structure of each several part is simple, and connected mode is bonding or welding, practice of construction is easy, realization is convenient and each several part anabolic process convenient.
4, the ingenious and reasonable stress of seat structure design adopted, by setting up spherical crown on upper padding plate, and at the bottom of upper padding plate and beam, between pre-embedded steel slab, adopt the polymer mortar of slow hardening type to fill, simultaneously by during main beam supporting to the horizontal wall inscription of the extruded automatic adjustment bridge floor of polymer mortar and longitudinal gradient, machine-processed to the fine setting of bearing after forming bearing installation and main beam supporting, realize bearing uniform-compression.
5, the bearing input cost adopted is lower, and material therefor is conventional Load materials, easily obtains, making, convenient transportation.
6, the construction quality of institute's employing bearing is easy to ensure, based on the fine setting mechanism after bearing installation and main beam supporting, construction error is eliminated, realize the uniform-compression of bearing, and the generation of the disease such as can effectively prevent seat empty, bias voltage, local distortion excessive, promotes bearing quality and application life.
7, the construction method step adopted is simple, reasonable in design and realization is convenient, construction effect is good, automatically deck transverse slope and longitudinal gradient is adapted to by steel plate spherical crown polymer mortar structure, without the need to arranging triangle cushion block and building groove at the bottom of girder beam, main beam supporting is convenient, fast simultaneously, significantly simplify the construction technology of bridge pad, effectively reduce the construction period of bridge pad.
8, the high and strong adaptability of the bearing construction quality of construction molding, be easy to change, both can be used for newly building bridge, also can be used in the replacing of old bridge seat; Meanwhile, meet the floor elevation of former bridge, deck transverse slope and longitudinal gradient by the fine setting mechanism of bearing pad stone and bearing self, the unfavorable stress such as effectively can eliminate the bias voltage of former bridge seat after replacing, come to nothing, and Replacement procedure is simple.
To sum up, seat structure of the present invention is simple, reasonable in design and easy for installation, result of use is good, having the advantages such as input cost is lower, reliable in quality, good endurance, strong adaptability, easily there is the problems such as seat empty, bias voltage, local distortion be excessive in what effectively can solve that existing bearing exists.Simultaneously, upper padding plate sets up spherical crown, and at the bottom of upper padding plate and beam, between pre-embedded steel slab, adopt the polymer mortar of slow hardening type to fill, by automatically adjusting deck transverse slope and longitudinal gradient during main beam supporting, machine-processed to the fine setting of bearing after forming bearing installation and main beam supporting, realize bearing uniform-compression, the generation of the disease such as can effectively prevent seat empty, bias voltage, local distortion excessive, promotes bearing quality and application life.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of steel plate spherical crown polymer mortar structural bearings of the present invention.
Fig. 2 is the structural representation of steel plate spherical crown polymer mortar structure of the present invention.
Fig. 3 is the method flow block diagram of the present invention when constructing to steel plate spherical crown polymer mortar structural bearings.
Description of reference numerals:
Pre-embedded steel slab at the bottom of 1-beam; 2-1-lower bolster; 2-2-neoprene bearing;
2-3-slide plate; 3-1-upper padding plate; 3-2-spherical crown;
3-3-polymer mortar packed layer; 3-4-rubber gasket; 4-bearing pad stone;
5-girder; 6-platform cap.
Detailed description of the invention
As shown in Figure 1 and Figure 2, steel plate spherical crown polymer mortar structural bearings of the present invention comprise the bearing pad stone 4 on the bottom bracing structure being laid in institute's construction bridges, the support body structure above bearing pad stone 4, be embedded in institute's construction bridges girder 5 bottom beam at the bottom of pre-embedded steel slab 1 and the steel plate spherical crown Polymer Mortar structure at the bottom of beam between pre-embedded steel slab 1 and described support body structure, described girder 5 is reinforced concrete beam, and described bearing pad stone 4 is reinforced concrete structure.Described steel plate spherical crown Polymer Mortar structure is positioned at described support body superstructure, at the bottom of described beam, pre-embedded steel slab 1, described steel plate spherical crown Polymer Mortar structure, described support body structure and bearing pad stone 4 are from top to bottom laid, and described steel plate spherical crown Polymer Mortar structure and described support body structure with bearing pad stone 4 all in parallel laying.Described support body structure is polytetrafluoroethylene (PTFE) teflon slider bearing; Described steel plate spherical crown Polymer Mortar structure comprises at the structural upper padding plate 3-1 of described support body, is fixed on the spherical crown 3-2 above in the middle part of upper padding plate 3-1 and the polymer mortar packed layer 3-3 by the polymer mortar filling molding be filled at the bottom of upper padding plate 3-1 and beam between pre-embedded steel slab 1 in cavity, and the top of described spherical crown 3-2 is propped up and to be withstood on bottom pre-embedded steel slab 1 at the bottom of beam and it is fixed in polymer mortar packed layer 3-3.
In the present embodiment, steel plate spherical crown polymer mortar structural bearings of the present invention also comprises the rubber gasket 3-4 be coated on outside polymer mortar packed layer 3-3 surrounding, and described rubber gasket 3-4 pad to be loaded at the bottom of upper padding plate 3-1 and beam between pre-embedded steel slab 1.Actual when carrying out slip casting, by rubber gasket 3-4, shutoff is carried out to injected polymer mortar.
During practice of construction, described polymer mortar packed layer 3-3 is rectangle.The shape of described rubber gasket 3-4 is identical with the shape of polymer mortar packed layer 3-3.
In the present embodiment, described rubber gasket 3-4 is pasted and fixed on upper padding plate 3-1, and is pasted and fixed on upper padding plate 3-1 by epoxy resin.
In the present embodiment, pre-embedded steel slab 1 at the bottom of described beam is positioned at directly over described steel plate spherical crown Polymer Mortar structure, and described steel plate spherical crown Polymer Mortar structure is positioned at directly over described support body structure, and described support body structure is positioned at directly over bearing pad stone 4; Described support body structure comprises the lower bolster 2-1 being fixed on bearing pad stone 4 top, the slide plate 2-3 being positioned at the neoprene bearing 2-2 on lower bolster 2-1 and being laid on neoprene bearing 2-2; Described neoprene bearing 2-2 is positioned at directly over lower bolster 2-1, and described slide plate 2-3 is positioned at directly over lower bolster 2-1; Described upper padding plate 3-1 is positioned at directly over lower bolster 2-1, and at the bottom of described beam, pre-embedded steel slab 1 is positioned at directly over lower bolster 2-1.Described slide plate 2-3 is polytetrafluoroethylene (PTFE) slide plate.
During practice of construction, at the bottom of described upper padding plate 3-1, lower bolster 2-1 and beam, pre-embedded steel slab 1 is flat plate; The bottom surface of pre-embedded steel slab 1 at the bottom of described beam is mutually concordant with the beam body bottom surface of its present position place girder 5; Described lower bolster 2-1 is fixed on bearing pad stone 4 by steel bonding glue or bolt, and described neoprene bearing 2-2 adopts epoxide-resin glue to be pasted on lower bolster 2-1, and described slide plate 2-3 adopts epoxide-resin glue to be pasted on neoprene bearing 2-2.
In the present embodiment, described spherical crown 3-2 is hemispherical steel ball-crown and it is weldingly fixed on upper padding plate 3-1.
Actually add man-hour, the overall height of described upper padding plate 3-1 and spherical crown 3-2 is 45mm ~ 55mm.
Further, the thickness of slab of described upper padding plate 3-1 is 10mm ~ 20mm.
In the present embodiment, the overall height of described upper padding plate 3-1 and spherical crown 3-2 is 50cm.
During practice of construction, can according to specific needs, the overall height of upper padding plate 3-1 and spherical crown 3-2 and the thickness of slab of upper padding plate 3-1 be adjusted accordingly.
Further, described polymer mortar is epoxy mortar.
In the present embodiment, described polymer mortar is formed by weight the even mix of 300 ︰ 350 ~ 400 ︰ 90 ~ 110 ︰ 9 ~ 11 ︰ 9 ~ 11 by cement, fine sand, epoxy resin, breeze and crosslinking agent, and described crosslinking agent is amine cross-linking agent.
In the present embodiment, described polymer mortar is formed by weight the even mix of 300 ︰ 375 ︰ 100 ︰ 10 ︰ 10 by cement, fine sand, epoxy resin, breeze and crosslinking agent.During practice of construction, can according to specific needs, the proportioning of component each in described polymer mortar be adjusted accordingly.
Further, also Admixture can be added in described polymer mortar.
Wherein, epoxy resin is alite paste; Crosslinking agent is curing compound, and described crosslinking agent is specially polyamine crosslinking agent, as trien.
In the present embodiment, described steel plate spherical crown Polymer Mortar structure, described support body structure and bearing pad stone 4 are all laid in level.
In the present embodiment, described bearing upper padding plate 3-1 and spherical crown 3-2 is highly 50mm.
In the present embodiment, the polymer mortar that described polymer mortar packed layer 3-3 is configured by cement, fine sand, epoxy resin, breeze, crosslinking agent, Admixture etc. is built shaping.
In the present embodiment, at the bottom of described upper padding plate 3-1, lower bolster 2-1 and beam, pre-embedded steel slab 1 is rectangular steel plates.
Actually add man-hour, described upper padding plate 3-1 is Q235 steel plate; Spherical crown 3-2 is hemispherical dome structure and it adopts Q235 steel to process.
During practice of construction, at the bottom of described upper padding plate 3-1, lower bolster 2-1 and beam, pre-embedded steel slab 1 also can adopt other shape, as circle, regular polygon etc.
The construction method of a kind of steel plate spherical crown polymer mortar structural bearings as shown in Figure 3, comprises the following steps:
Pre-embedded steel slab at the bottom of step one, beam is installed: carry out in prefabrication process to the girder 5 of institute's construction bridges, the construction steel cricket that needs according to designing in advance is preced with the quantity of polymer mortar structural bearings and the installation position of each steel plate spherical crown polymer mortar structure, bottom girder 5 pre-buried each steel plate spherical crown polymer mortar structural bearings beam at the bottom of pre-embedded steel slab 1;
The quantity of described steel plate spherical crown polymer mortar structural bearings is multiple;
Step 2, surveying setting-out: after the bottom bracing structure of institute's construction bridges has been constructed, on described bottom bracing structure, carry out surveying setting-out respectively to the installation position of each steel plate spherical crown polymer mortar structure;
Step 3, bearing pad stone are constructed: according to the surveying setting-out result in step 2, on described bottom bracing structure, construct respectively to the bearing pad stone 4 of each steel plate spherical crown polymer mortar structure;
Step 4, support body structure installment: each bearing pad stone 4 of having constructed in step 3 installs described support body structure respectively;
Step 5, steel plate spherical crown Polymer Mortar structure construction: in each support body structure of installation in step 4, described steel plate spherical crown Polymer Mortar structure of constructing respectively;
The work progress of described steel plate spherical crown Polymer Mortar structure is as follows:
The upper padding plate of step 501, band spherical crown is installed: be arranged on by the upper padding plate 3-1 being fixed with spherical crown 3-2 above middle part in the described support body structure of installation in step 4;
Step 502, polymer mortar inject: in step 501 described upper padding plate 3-1 injects pre-configured described polymer mortar, obtain polymer mortar grouting layer;
Step 6, erection of main beam, process is as follows:
Step 601, Luo Liang: the girder 5 bottom being embedded with to pre-embedded steel slab 1 at the bottom of beam lifts, and girder 5 is fallen, until girder 5 is supported in the described steel plate spherical crown Polymer Mortar structure of multiple described steel plate spherical crown polymer mortar structural bearings, and pre-embedded steel slab 1 at the bottom of each beam pre-buried bottom girder 5 is fitted tightly respectively with the described polymer mortar grouting layer in each steel plate spherical crown Polymer Mortar structure;
Step 602, polymer mortar maintenance: maintenance is carried out to institute's injection of polymer mortar in step 502, after institute's injection of polymer mortar reaches design strength, obtain the polymer mortar packed layer 3-3 of construction molding, complete the work progress of each steel plate spherical crown polymer mortar structural bearings.
In the present embodiment, the quantity of the spherical crown of steel plate described in step one polymer mortar structural bearings is four, and described girder 5 is case beam; Four described steel plate spherical crown polymer mortar structural bearingses comprise the beam end support below two groups of former and later two beam-ends being supported in girder 5 respectively; Often organize described beam end support and include the described beam end support that two direction across bridge along institute's construction bridges lay, two described beam end supports are respectively and are supported in left side bearing below girder 5 left and right sides and right side bearing; The left side bearing of beam end support described in two groups is along the vertical bridge of institute's construction bridges to laying, and the right side bearing of beam end support described in two groups is along the vertical bridge of institute's construction bridges to laying;
Bottom bracing structure described in step 2 is bridge pier or abutment, is provided with pinner reinforcing cage, is provided with pier cap reinforcing cage in the pier cap of described bridge pier in described bearing pad stone 4, is provided with platform cap reinforcing cage in the platform cap 6 of described abutment; Described pinner reinforcing cage and described pier cap reinforcing cage or described cap reinforcing cage are fastenedly connected and are integrated.
In the present embodiment, in step 3, the bearing pad stone 4 of multiple described steel plate spherical crown polymer mortar structure is all in the same plane, and specifically the end face of the bearing pad stone 4 of multiple described steel plate spherical crown polymer mortar structure is all in the same plane.
And, the end face line trend often organizing two described beam end supports in described beam end support is all consistent with the design horizontal wall inscription of institute's construction bridges span centre position bridge floor, and the end face line trend of the right side bearing of the end face line trend of the left side bearing of beam end support described in two groups and beam end support described in two groups is all consistent with the design longitudinal gradient of institute's construction bridges span centre position bridge floor.
When constructing to bearing pad stone 4 in step 3, the construction method of each bearing pad stone 4 is all identical.During practice of construction, first colligation is carried out to described pinner reinforcing cage.In the present embodiment, described pinner reinforcing cage is formed in the vertical vertical reinforcement colligation to laying by horizontal reinforcement cage and multiple tracks, the horizontal steel bar colligation that described horizontal reinforcement cage is level laying by multiple tracks forms, and vertical reinforcement described in per pass is all fastenedly connected with described pier cap reinforcing cage or described cap reinforcing cage and is integrated.
In the present embodiment, when described bearing pad stone 4 is constructed, first described pinner reinforcing cage good for colligation is in advance positioned on described bottom bracing structure, and the vertical reinforcement in described pinner reinforcing cage and described pier cap reinforcing cage or described cap reinforcing cage are fastenedly connected are integrated; Afterwards, carry out Zhi Li to the forming panel for bearing pad stone 4 of constructing, the forming panel of recycling institute Zhi Li carries out concrete pouring construction to bearing pad stone 4; Then, maintenance is carried out to institute's concreting, obtain the bearing pad stone 4 of construction molding.
In the present embodiment, when described support body structure being installed in step 4, first clean the top of bridge pier or abutment top and bearing pad stone 4, and check the bent cap axis of bridge pier or abutment and the planeness at elevation and bearing pad stone 4 top; Afterwards, bearing pad stone 4 is installed lower bolster 2-1, and lower bolster 2-1 adopts epoxy mortar to paste; Then, lower bolster 2-1 installs neoprene bearing 2-2, and neoprene bearing 2-2 adopts epoxy mortar to paste; Finally, neoprene bearing 2-2 installs slide plate 2-3, and slide plate 2-3 adopts epoxy glue to paste.
In the present embodiment, before carrying out polymer mortar injection in step 502, first on upper padding plate 3-1, paste fixing rubber gasket 3-4, then inject described polymer mortar in rubber gasket 3-4, the apical side height of described polymer mortar grouting layer is higher than the overhead height of spherical crown 3-2.
Further, described rubber gasket 3-4 adopts epoxy resin to paste.In the present embodiment, the top of described rubber gasket 3-4 is mutually concordant with the top of spherical crown 3-2.During actual injection, in rubber gasket 3-4, fill described polymer mortar, to guarantee the overhead height of apical side height higher than spherical crown 3-2 of described polymer mortar grouting layer.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (10)
1. a steel plate spherical crown polymer mortar structural bearings, it is characterized in that: pre-embedded steel slab (1) at the bottom of the beam of girder (5) bottom of the institute's construction bridges that comprises the bearing pad stone (4) on the bottom bracing structure being laid in institute's construction bridges, is positioned at the support body structure of bearing pad stone (4) top, is embedded in and the steel plate spherical crown Polymer Mortar structure be positioned between pre-embedded steel slab at the bottom of beam (1) and described support body structure, described girder (5) is reinforced concrete beam, and described bearing pad stone (4) is reinforced concrete structure; Described steel plate spherical crown Polymer Mortar structure is positioned at described support body superstructure, at the bottom of described beam, pre-embedded steel slab (1), described steel plate spherical crown Polymer Mortar structure, described support body structure and bearing pad stone (4) are from top to bottom laid, and described steel plate spherical crown Polymer Mortar structure and described support body structure with bearing pad stone (4) all in parallel laying; Described support body structure is polytetrafluoroethylene (PTFE) teflon slider bearing; Described steel plate spherical crown Polymer Mortar structure comprises and is positioned at the structural upper padding plate of described support body (3-1), is fixed on the spherical crown (3-2) of top, upper padding plate (3-1) middle part and by the polymer mortar packed layer (3-3) of polymer mortar filling molding being filled in cavity between pre-embedded steel slab (1) at the bottom of upper padding plate (3-1) and beam, and the top of described spherical crown (3-2) is propped up and to be withstood on bottom pre-embedded steel slab at the bottom of beam (1) and it is fixed in polymer mortar packed layer (3-3).
2. according to a kind of steel plate spherical crown polymer mortar structural bearings according to claim 1, it is characterized in that: also comprise the rubber gasket (3-4) be coated on outside polymer mortar packed layer (3-3) surrounding, described rubber gasket (3-4) pad to be loaded at the bottom of upper padding plate (3-1) and beam between pre-embedded steel slab (1).
3. according to a kind of steel plate spherical crown polymer mortar structural bearings described in claim 1 or 2, it is characterized in that: pre-embedded steel slab (1) at the bottom of described beam is positioned at directly over described steel plate spherical crown Polymer Mortar structure, described steel plate spherical crown Polymer Mortar structure is positioned at directly over described support body structure, and described support body structure is positioned at directly over bearing pad stone (4); Described support body structure comprises the lower bolster (2-1) being fixed on bearing pad stone (4) top, the slide plate (2-3) being positioned at the neoprene bearing (2-2) on lower bolster (2-1) and being laid on neoprene bearing (2-2); Described neoprene bearing (2-2) is positioned at directly over lower bolster (2-1), and described slide plate (2-3) is positioned at directly over lower bolster (2-1); Described upper padding plate (3-1) is positioned at directly over lower bolster (2-1), and at the bottom of described beam, pre-embedded steel slab (1) is positioned at directly over lower bolster (2-1).
4., according to a kind of steel plate spherical crown polymer mortar structural bearings according to claim 3, it is characterized in that: at the bottom of described upper padding plate (3-1), lower bolster (2-1) and beam, pre-embedded steel slab (1) is flat plate; The bottom surface of pre-embedded steel slab (1) at the bottom of described beam is mutually concordant with the beam body bottom surface at its present position place girder (5); Described lower bolster (2-1) is fixed on bearing pad stone (4) by steel bonding glue or bolt, described neoprene bearing (2-2) adopts epoxide-resin glue to be pasted on lower bolster (2-1), and described slide plate (2-3) adopts epoxide-resin glue to be pasted on neoprene bearing (2-2).
5., according to a kind of steel plate spherical crown polymer mortar structural bearings described in claim 1 or 2, it is characterized in that: described spherical crown (3-2) for hemispherical steel ball-crown and its be weldingly fixed on upper padding plate (3-1).
6., according to a kind of steel plate spherical crown polymer mortar structural bearings described in claim 1 or 2, it is characterized in that: the overall height of described upper padding plate (3-1) and spherical crown (3-2) is 45mm ~ 55mm.
7. according to a kind of steel plate spherical crown polymer mortar structural bearings described in claim 1 or 2, it is characterized in that: described polymer mortar is formed by weight the even mix of 300 ︰ 350 ~ 400 ︰ 90 ~ 110 ︰ 9 ~ 11 ︰ 9 ~ 11 by cement, fine sand, epoxy resin, breeze and crosslinking agent, and described crosslinking agent is amine cross-linking agent.
8., to the method that bearing is as claimed in claim 1 constructed, it is characterized in that the method comprises the following steps:
Pre-embedded steel slab at the bottom of step one, beam is installed: carry out in prefabrication process to the girder (5) of institute's construction bridges, the construction steel cricket that needs according to designing in advance is preced with the quantity of polymer mortar structural bearings and the installation position of each steel plate spherical crown polymer mortar structure, pre-embedded steel slab (1) at the bottom of the beam of the pre-buried each steel plate spherical crown polymer mortar structural bearings in girder (5) bottom;
The quantity of described steel plate spherical crown polymer mortar structural bearings is multiple;
Step 2, surveying setting-out: after the bottom bracing structure of institute's construction bridges has been constructed, on described bottom bracing structure, carry out surveying setting-out respectively to the installation position of each steel plate spherical crown polymer mortar structure;
Step 3, bearing pad stone are constructed: according to the surveying setting-out result in step 2, on described bottom bracing structure, construct respectively to the bearing pad stone (4) of each steel plate spherical crown polymer mortar structure;
Step 4, support body structure installment: each bearing pad stone (4) of having constructed in step 3 installs described support body structure respectively;
Step 5, steel plate spherical crown Polymer Mortar structure construction: in each support body structure of installation in step 4, described steel plate spherical crown Polymer Mortar structure of constructing respectively;
The work progress of described steel plate spherical crown Polymer Mortar structure is as follows:
The upper padding plate of step 501, band spherical crown is installed: be arranged on by the upper padding plate (3-1) being fixed with spherical crown (3-2) above middle part in the described support body structure of installation in step 4;
Step 502, polymer mortar inject: described upper padding plate (3-1) is upper in step 501 injects pre-configured described polymer mortar, obtains polymer mortar grouting layer;
Step 6, erection of main beam, process is as follows:
Step 601, Luo Liang: the girder (5) bottom being embedded with to pre-embedded steel slab at the bottom of beam (1) lifts, and girder (5) is fallen, until girder (5) is supported in the described steel plate spherical crown Polymer Mortar structure of multiple described steel plate spherical crown polymer mortar structural bearings, and pre-embedded steel slab (1) at the bottom of the pre-buried each beam in girder (5) bottom is fitted tightly respectively with the described polymer mortar grouting layer in each steel plate spherical crown Polymer Mortar structure;
Step 602, polymer mortar maintenance: maintenance is carried out to institute's injection of polymer mortar in step 502, after institute's injection of polymer mortar reaches design strength, obtain the polymer mortar packed layer (3-3) of construction molding, complete the work progress of each steel plate spherical crown polymer mortar structural bearings.
9. in accordance with the method for claim 8, it is characterized in that: the quantity of the spherical crown of steel plate described in step one polymer mortar structural bearings is four, and described girder (5) is case beam; Four described steel plate spherical crown polymer mortar structural bearingses comprise the beam end support below two groups of former and later two beam-ends being supported in girder (5) respectively; Often organize described beam end support and include the described beam end support that two direction across bridge along institute's construction bridges lay, two described beam end supports are respectively and are supported in left side bearing below girder (5) left and right sides and right side bearing; The left side bearing of beam end support described in two groups is along the vertical bridge of institute's construction bridges to laying, and the right side bearing of beam end support described in two groups is along the vertical bridge of institute's construction bridges to laying;
Bottom bracing structure described in step 2 is bridge pier or abutment, and described bearing pad stone is provided with pinner reinforcing cage in (4), is provided with pier cap reinforcing cage in the pier cap of described bridge pier, is provided with platform cap reinforcing cage in the platform cap (6) of described abutment; Described pinner reinforcing cage and described pier cap reinforcing cage or described cap reinforcing cage are fastenedly connected and are integrated.
10. according to the method described in claim 8 or 9, it is characterized in that: before carrying out polymer mortar injection in step 502, first fix rubber gasket (3-4) upper stickup of upper padding plate (3-1), inject described polymer mortar in rubber gasket (3-4) again, the apical side height of described polymer mortar grouting layer is higher than the overhead height of spherical crown (3-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510751883.4A CN105297620B (en) | 2015-11-07 | 2015-11-07 | Steel plate spherical crown polymer mortar structure support and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510751883.4A CN105297620B (en) | 2015-11-07 | 2015-11-07 | Steel plate spherical crown polymer mortar structure support and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105297620A true CN105297620A (en) | 2016-02-03 |
| CN105297620B CN105297620B (en) | 2017-03-22 |
Family
ID=55195387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510751883.4A Active CN105297620B (en) | 2015-11-07 | 2015-11-07 | Steel plate spherical crown polymer mortar structure support and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105297620B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012820A (en) * | 2016-07-22 | 2016-10-12 | 成都鹏程路桥机械有限公司 | Mounting method of bridge support |
| CN107974943A (en) * | 2017-11-30 | 2018-05-01 | 广州华夏职业学院 | A kind of road and bridge pavement construction method |
| CN108374345A (en) * | 2018-03-28 | 2018-08-07 | 中铁二十局集团第五工程有限公司 | Across both wired transom pier large-span steel transverse beam lifting construction methods |
| CN110952451A (en) * | 2019-11-19 | 2020-04-03 | 中国铁建大桥工程局集团有限公司 | Air-sounding prevention method for epoxy resin support |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000034704A (en) * | 1998-07-21 | 2000-02-02 | Yokohama Rubber Co Ltd:The | Structure of sliding bearing |
| CN2416135Y (en) * | 2000-04-07 | 2001-01-24 | 舒惠芷 | Cambered surface rectangular slab type rubber bearing |
| KR100660035B1 (en) * | 2005-08-02 | 2006-12-20 | (주)알티에스 | Bridge bearing |
| CN201176562Y (en) * | 2008-03-28 | 2009-01-07 | 柳州东方工程橡胶制品有限公司 | Slope self-regulating support |
| CN201952726U (en) * | 2011-03-18 | 2011-08-31 | 衡水宝力工程橡胶有限公司 | Steel spherical crown laminated rubber bearing |
| CN102677585A (en) * | 2012-05-25 | 2012-09-19 | 中交第二公路勘察设计研究院有限公司 | Round spherical hinge adjusting gradient laminated rubber bearing for highway bridge |
| CN202730638U (en) * | 2012-07-24 | 2013-02-13 | 成都市新筑路桥机械股份有限公司 | Mounting support |
-
2015
- 2015-11-07 CN CN201510751883.4A patent/CN105297620B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000034704A (en) * | 1998-07-21 | 2000-02-02 | Yokohama Rubber Co Ltd:The | Structure of sliding bearing |
| CN2416135Y (en) * | 2000-04-07 | 2001-01-24 | 舒惠芷 | Cambered surface rectangular slab type rubber bearing |
| KR100660035B1 (en) * | 2005-08-02 | 2006-12-20 | (주)알티에스 | Bridge bearing |
| CN201176562Y (en) * | 2008-03-28 | 2009-01-07 | 柳州东方工程橡胶制品有限公司 | Slope self-regulating support |
| CN201952726U (en) * | 2011-03-18 | 2011-08-31 | 衡水宝力工程橡胶有限公司 | Steel spherical crown laminated rubber bearing |
| CN102677585A (en) * | 2012-05-25 | 2012-09-19 | 中交第二公路勘察设计研究院有限公司 | Round spherical hinge adjusting gradient laminated rubber bearing for highway bridge |
| CN202730638U (en) * | 2012-07-24 | 2013-02-13 | 成都市新筑路桥机械股份有限公司 | Mounting support |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012820A (en) * | 2016-07-22 | 2016-10-12 | 成都鹏程路桥机械有限公司 | Mounting method of bridge support |
| CN107974943A (en) * | 2017-11-30 | 2018-05-01 | 广州华夏职业学院 | A kind of road and bridge pavement construction method |
| CN108374345A (en) * | 2018-03-28 | 2018-08-07 | 中铁二十局集团第五工程有限公司 | Across both wired transom pier large-span steel transverse beam lifting construction methods |
| CN110952451A (en) * | 2019-11-19 | 2020-04-03 | 中国铁建大桥工程局集团有限公司 | Air-sounding prevention method for epoxy resin support |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105297620B (en) | 2017-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105297620A (en) | Steel plate spherical crown polymer mortar structure support and construction method thereof | |
| JP2019501320A (en) | Prefabricated slab type anti-vibration track structure system and related construction method | |
| CN105239502A (en) | Uniform force transmission device used for bridge support and installation method of uniform force transmission device | |
| CN103174071B (en) | Construction technology of short sleeper vibration attenuation fastener with improved structure replacing elasticity short sleeper | |
| CN109137762B (en) | Method for reinforcing wave-shaped arch plate double-curved arch bridge | |
| KR100802336B1 (en) | The use of the bearing installation is involved the precast block and it for construction method of the bearing installation and the replacing methodof bearing installation | |
| CN107143039B (en) | Architectural vibration-insulation elastic sliding plate support construction method | |
| CN104153284A (en) | Partial filling type steel box concrete continuous composite girder bridge and construction method thereof | |
| CN102535504A (en) | Seismic isolation foundation for bridge | |
| KR101778210B1 (en) | Expansion joint construction method using elastic polymer concrete joint | |
| CN103195259B (en) | Method for reinforcing concrete structure by foam concrete prefabricated slab | |
| CN205188803U (en) | Steel sheet spherical crown polymer mortar structure support | |
| JP6988189B2 (en) | Connection structure and connection method of precast concrete deck | |
| CN106522272A (en) | Design and construction method of underground pipe rack based on plate with adhesive prestress on cross section | |
| CN113322771B (en) | Seamless bridge structure based on ultrahigh-toughness cement-based composite material and construction method | |
| CN205329433U (en) | Maintain convenient embedded track structure | |
| CN205188804U (en) | Bridge beam supports uses even force transfer device | |
| JP6988188B2 (en) | Connection structure and connection method of precast concrete deck | |
| Zhao et al. | Integral lifting project of the qifeng bridge | |
| CN105239484A (en) | Road surface structure suitable for heavy-duty traffic | |
| CN210636309U (en) | Novel concrete bridge deck continuous structure applied to beam bridge | |
| CN104532759B (en) | A kind of double curvature arched bridge bridge floor widen reinforcement process method | |
| CN215947749U (en) | Prefabricated assembled ballast bed | |
| CN110792042A (en) | Anti-overturning reinforcing method for rectangular single-column pier bridge | |
| WO1996033311A1 (en) | Hinged section construction for a gerber bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 710075 No. 60, Gaoxin Sixth Road, high tech Zone, Xi'an, Shaanxi Patentee after: Xi'an Highway Research Institute Co., Ltd Address before: No. 60, Gaoxin 6th Road, high tech Zone, Xi'an, Shaanxi 710065 Patentee before: Xi'an Highway Research Institute |