CN105464004A - Method for reinforcing steel cross beams at bottom of assembly slab bridge without traffic interruption - Google Patents
Method for reinforcing steel cross beams at bottom of assembly slab bridge without traffic interruption Download PDFInfo
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- CN105464004A CN105464004A CN201510916567.8A CN201510916567A CN105464004A CN 105464004 A CN105464004 A CN 105464004A CN 201510916567 A CN201510916567 A CN 201510916567A CN 105464004 A CN105464004 A CN 105464004A
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- slab bridge
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- girder steel
- anchor hole
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a method for reinforcing steel cross beams at the bottom of an assembly slab bridge without traffic interruption. The method comprises the following steps that (1) a slab bridge body and the steel beams are pretreated, dust and impurities on the bottom face of the slab bridge body are blown off through high-pressure air, the binding faces, making contact with the bottom face of the slab bridge body, of the steel beams are subjected to polishing and rust removal, the pre-installation position of the bottom face of the slab bridge body is determined, and setting out is conducted; anchor holes are drilled in the portions, in one-to-one correspondence with the steel beams, of the pre-installation position, and the diameter of the anchor holes is determined according to the specification of selected anchor bolts; and (2) the steel beams are reinforced, the steel beams are transversely placed in the pre-installation position, the steel beams are one or more of rectangular tubes, square steel and box iron, the anchor holes in the bottom face of the slab bridge body and the anchor holes in the steel beams are made to be aligned one by one, and the steel beams and the slab bridge body are anchored together through the anchor bolts penetrating through the anchor holes. The reinforcing method has the advantages that the damage of an original structure is small, construction is easy and convenient, the transverse load distribution of the slab bridge can be substantially improved, and the transverse stiffness can be improved.
Description
Technical field
The present invention relates to a kind of assembling slab bridge bottom steel crossbeam reinforcement means of uninterrupted traffic.
Background technology
Slab bridge (comprising hollow slab bridge and solid slab bridge) is bridge type conventional in Bridges in Our Country engineering.This bridge-type structure form is simple, lower relative to tee girder building height, prefabricated convenience, by material economy, be easy to batch production and standardized construction, and veneer good stability in transport and hoisting process, thus being widelyd popularize in engineering, is the form of structure that the medium and small bridge design of China generally adopts.Adopt the type of attachment of shallow hinge between the bridge plate of slab bridge, when the traffic volume not quite and vehicle capacity is less in the past, can transport need be met.But along with the quickening of China's economic construction paces and the increasing of Modern Traffic amount, vehicle has more existing overload, makes hinge seam pass force crossly excessive, causes hinge seam concrete be cut and occur that between bridge plate, lateral ties lost efficacy and single slab bearing situation, jeopardize bridge security, become hidden trouble of traffic.When meet do not interrupt existing traffic, carrying out maintenance and reinforcement to these spannings is the extremely important and work of necessity.Notification number is that the Chinese patent of CN103061271A discloses a kind of hollow slab bridge single slab bearing reinforcement means, there is following drawback in this reinforcement means: 1) needs to root out original deck paving, reinforce under can not ensureing the condition of uninterrupted traffic to bridge; 2) adopt steel plate to reinforce, to the limited efficiency improving slab bridge load beam cross direction profiles, also cannot increase substantially the lateral stiffness of slab bridge beam; 3) destroy greatly original structure, construct loaded down with trivial details, workload is large.
Summary of the invention
In view of this, the object of this invention is to provide a kind of uninterrupted traffic, destroy little to original structure, easy construction, the assembling slab bridge bottom steel crossbeam reinforcement means of the cross direction profiles significantly improving slab bridge load beam and the uninterrupted traffic improving lateral stiffness.
The present invention is solved the problem by following technological means: a kind of assembling slab bridge bottom steel crossbeam reinforcement means of uninterrupted traffic, comprises the following steps:
(1) carry out pretreatment to plate bridge and girder steel: utilize pressure-air to blow slab bridge bottom surface dust, impurity off, the binding face contacted with slab bridge bottom surface girder steel carries out polishing and eliminates rust, St3; Determine the pre-installed position of slab bridge bottom surface, as requested setting-out is carried out to the pre-installed position pasting girder steel; On pre-installed position and girder steel, anchor hole is bored in position one to one, and the diameter of anchor hole is determined according to the specification of selected crab-bolt;
(2) reinforcing steel beam: the horizontal placing steel beam of the pre-installed position in slab bridge bottom surface, one or more of quarter bend, square steel and channel-section steel selected by described girder steel, the anchor hole of slab bridge bottom surface is alignd one by one with the anchor hole on girder steel, utilizes together with girder steel is anchored at slab bridge by the crab-bolt penetrating anchor hole.
Further, carry out leveling by leveling viscose glue to pre-installed position, leveling viscose glue is full of anchor hole, and girder steel and slab bridge are closely pasted together.
Further, carry out basal plane inspection, process to pre-installed position, planeness, moisture content, cleannes need meet design requirement.
Beneficial effect of the present invention:
1) do not need to construct to original bridge floor, can conscientiously guarantee to reinforce when uninterrupted traffic, reduce road pressure, prevent from causing negative social to affect.
2) do not need to process slab bridge hinge seam, destroy little to original structure, easy construction.
3) avoid the risk of single slab bearing, significantly improve the cross direction profiles of slab bridge load beam and improve lateral stiffness.
Accompanying drawing explanation
Fig. 1 is the structural representation of solid slab bridge strengthening of steel bridge;
Fig. 2 is the structural representation of hollow slab bridge strengthening of steel bridge.
Wherein 1 is solid slab bridge, and 2 is hollow slab bridge, and 3 is girder steel, and 4 is crab-bolt.
Detailed description of the invention
Below in conjunction with embodiment, invention is better illustrated.
Embodiment 1
An assembling slab bridge bottom steel crossbeam reinforcement means for uninterrupted traffic, comprises the following steps:
(1) carry out pretreatment to plate bridge and girder steel: selecting across footpath is the hollow slab bridge of 8m, utilize pressure-air to blow slab bridge bottom surface dust, impurity off, the binding face contacted with slab bridge bottom surface girder steel carries out polishing and eliminates rust, St3; Determine the pre-installed position of slab bridge bottom surface, determine 3 road pre-installed position herein, carry out basal plane inspection, process to pre-installed position, planeness, moisture content, cleannes need meet design requirement, and carry out setting-out as requested to the pre-installed position pasting girder steel; On pre-installed position and girder steel, anchor hole is bored in position one to one, and the diameter of anchor hole is determined according to the specification of selected crab-bolt, and the load that the quantity of anchor hole is born according to slab bridge is determined;
(2) reinforcing steel beam: the horizontal placing steel beam of the pre-installed position in slab bridge bottom surface, one or more of quarter bend, square steel and channel-section steel selected by described girder steel, select quarter bend herein, the anchor hole of slab bridge bottom surface is alignd one by one with the anchor hole on girder steel, utilizes together with girder steel is anchored at slab bridge by the crab-bolt penetrating anchor hole.
In addition, carry out leveling by leveling viscose glue to pre-installed position, leveling viscose glue is full of anchor hole, and girder steel and slab bridge are closely pasted together.
Embodiment 2
An assembling slab bridge bottom steel crossbeam reinforcement means for uninterrupted traffic, comprises the following steps:
(1) carry out pretreatment to plate bridge and girder steel: selecting is the solid slab bridge of 8m across footpath, utilizes pressure-air to blow slab bridge bottom surface dust, impurity off, the binding face contacted with slab bridge bottom surface girder steel carries out polishing and eliminates rust, St3; Determine the pre-installed position of slab bridge bottom surface, determine 3 road pre-installed position herein, carry out basal plane inspection, process to pre-installed position, planeness, moisture content, cleannes need meet design requirement, and carry out setting-out as requested to the pre-installed position pasting girder steel; On pre-installed position and girder steel, anchor hole is bored in position one to one, and the diameter of anchor hole is determined according to the specification of selected crab-bolt, and the load that the quantity of anchor hole is born according to slab bridge is determined;
(2) reinforcing steel beam: the horizontal placing steel beam of the pre-installed position in slab bridge bottom surface, one or more of quarter bend, square steel and channel-section steel selected by described girder steel, select square steel herein, the anchor hole of slab bridge bottom surface is alignd one by one with the anchor hole on girder steel, utilizes together with girder steel is anchored at slab bridge by the crab-bolt penetrating anchor hole.
In addition, carry out leveling by leveling viscose glue to pre-installed position, leveling viscose glue is full of anchor hole, and girder steel and slab bridge are closely pasted together.
Embodiment 3
An assembling slab bridge bottom steel crossbeam reinforcement means for uninterrupted traffic, comprises the following steps:
(1) carry out pretreatment to plate bridge and girder steel: selecting across footpath is the hollow slab bridge of 13m, utilize pressure-air to blow slab bridge bottom surface dust, impurity off, the binding face contacted with slab bridge bottom surface girder steel carries out polishing and eliminates rust, St3; Determine the pre-installed position of slab bridge bottom surface, determine 3 road pre-installed position herein, carry out basal plane inspection, process to pre-installed position, planeness, moisture content, cleannes need meet design requirement, and carry out setting-out as requested to the pre-installed position pasting girder steel; On pre-installed position and girder steel, anchor hole is bored in position one to one, and the diameter of anchor hole is determined according to the specification of selected crab-bolt, and the load that the quantity of anchor hole is born according to slab bridge is determined;
(2) reinforcing steel beam: the horizontal placing steel beam of the pre-installed position in slab bridge bottom surface, one or more of quarter bend, square steel and channel-section steel selected by described girder steel, select channel-section steel herein, the anchor hole of slab bridge bottom surface is alignd one by one with the anchor hole on girder steel, utilizes together with girder steel is anchored at slab bridge by the crab-bolt penetrating anchor hole.
In addition, carry out leveling by leveling viscose glue to pre-installed position, leveling viscose glue is full of anchor hole, and girder steel and slab bridge are closely pasted together.
Embodiment 4
An assembling slab bridge bottom steel crossbeam reinforcement means for uninterrupted traffic, comprises the following steps:
(1) carry out pretreatment to plate bridge and girder steel: selecting is the solid slab bridge of 13m across footpath, utilizes pressure-air to blow slab bridge bottom surface dust, impurity off, the binding face contacted with slab bridge bottom surface girder steel carries out polishing and eliminates rust, St3; Determine the pre-installed position of slab bridge bottom surface, determine 3 road pre-installed position herein, carry out basal plane inspection, process to pre-installed position, planeness, moisture content, cleannes need meet design requirement, and carry out setting-out as requested to the pre-installed position pasting girder steel; On pre-installed position and girder steel, anchor hole is bored in position one to one, and the diameter of anchor hole is determined according to the specification of selected crab-bolt, and the load that the quantity of anchor hole is born according to slab bridge is determined;
(2) reinforcing steel beam: the horizontal placing steel beam of the pre-installed position in slab bridge bottom surface, one or more of quarter bend, square steel and channel-section steel selected by described girder steel, select each one of quarter bend, square steel and channel-section steel herein, the anchor hole of slab bridge bottom surface is alignd one by one with the anchor hole on girder steel, utilizes together with girder steel is anchored at slab bridge by the crab-bolt penetrating anchor hole.
In addition, carry out leveling by leveling viscose glue to pre-installed position, leveling viscose glue is full of anchor hole, and girder steel and slab bridge are closely pasted together.
Fig. 1 is the structural representation of solid slab bridge strengthening of steel bridge; Fig. 2 is the structural representation of hollow slab bridge strengthening of steel bridge, and wherein 1 is solid slab bridge, and 2 is hollow slab bridge, and 3 is girder steel, and 4 is crab-bolt.Table 1 carries out slab bridge bending bearing capacity lifting ratio control table when reinforcings and method of the present invention are reinforced for adopting steel plate, specific as follows:
Table 1
In addition, carry out leveling by leveling viscose glue to pre-installed position, leveling viscose glue is full of anchor hole, and girder steel and slab bridge is closely pasted together the bending bearing capacity of slab bridge can be made to promote ratio to reach 15.10% ~ 24.26%.
In sum, reinforcement means of the present invention, does not need to construct to original bridge floor, can conscientiously guarantee to reinforce when uninterrupted traffic, reduces road pressure, prevents from causing negative social to affect; Do not need to process slab bridge hinge seam, destroy little to original structure, easy construction; Avoid the risk of single slab bearing, significantly improve the cross direction profiles of slab bridge load beam and improve lateral stiffness.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (3)
1. an assembling slab bridge bottom steel crossbeam reinforcement means for uninterrupted traffic, is characterized in that, comprise the following steps:
(1) carry out pretreatment to plate bridge and girder steel: utilize pressure-air to blow slab bridge bottom surface dust, impurity off, the binding face contacted with slab bridge bottom surface girder steel carries out polishing and eliminates rust, St3; Determine the pre-installed position of slab bridge bottom surface, as requested setting-out is carried out to the pre-installed position pasting girder steel; On pre-installed position and girder steel, anchor hole is bored in position one to one, and the diameter of anchor hole is determined according to the specification of selected crab-bolt;
(2) reinforcing steel beam: the horizontal placing steel beam of the pre-installed position in slab bridge bottom surface, one or more of quarter bend, square steel and channel-section steel selected by described girder steel, the anchor hole of slab bridge bottom surface is alignd one by one with the anchor hole on girder steel, utilizes together with girder steel is anchored at slab bridge by the crab-bolt penetrating anchor hole.
2. the assembling slab bridge bottom steel crossbeam reinforcement means of uninterrupted traffic according to claim 1, it is characterized in that, carry out leveling by leveling viscose glue to pre-installed position, leveling viscose glue is full of anchor hole, and girder steel and slab bridge are closely pasted together.
3. the assembling slab bridge bottom steel crossbeam reinforcement means of uninterrupted traffic according to claim 1, it is characterized in that, carry out basal plane inspection, process to pre-installed position, planeness, moisture content, cleannes need meet design requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916567.8A CN105464004A (en) | 2015-12-11 | 2015-12-11 | Method for reinforcing steel cross beams at bottom of assembly slab bridge without traffic interruption |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510916567.8A CN105464004A (en) | 2015-12-11 | 2015-12-11 | Method for reinforcing steel cross beams at bottom of assembly slab bridge without traffic interruption |
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| CN105464004A true CN105464004A (en) | 2016-04-06 |
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| CN201510916567.8A Pending CN105464004A (en) | 2015-12-11 | 2015-12-11 | Method for reinforcing steel cross beams at bottom of assembly slab bridge without traffic interruption |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107700868A (en) * | 2017-11-14 | 2018-02-16 | 重庆市公安消防总队 | A kind of new crab-bolt steel plate reinforcement refractory system and its reinforcement means |
| CN108797389A (en) * | 2018-06-26 | 2018-11-13 | 辽宁省交通规划设计院有限责任公司 | Enhance Hollow Slab Beam Bridge lateral ties ruggedized construction and its construction method |
| CN108824222A (en) * | 2018-06-26 | 2018-11-16 | 辽宁省交通规划设计院有限责任公司 | Cored slab lateral ties ruggedized construction and its construction method are enhanced using steel corrugated plating |
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| US5920938A (en) * | 1997-08-05 | 1999-07-13 | Elcock; Stanley E. | Method for rejuvenating bridge hinges |
| NL1019939C2 (en) * | 2002-02-11 | 2003-08-13 | Univ Delft Tech | Bonding concrete to substrate using adhesive, especially for laying concrete road surfaces, by applying adhesive to substrate and then casting concrete |
| CN202247710U (en) * | 2011-09-06 | 2012-05-30 | 湖南固特邦土木技术发展有限公司 | Structure for enhancing horizontal linkage of existing bridge hollow slabs without interrupting traffic |
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| NL1019939C2 (en) * | 2002-02-11 | 2003-08-13 | Univ Delft Tech | Bonding concrete to substrate using adhesive, especially for laying concrete road surfaces, by applying adhesive to substrate and then casting concrete |
| CN202247710U (en) * | 2011-09-06 | 2012-05-30 | 湖南固特邦土木技术发展有限公司 | Structure for enhancing horizontal linkage of existing bridge hollow slabs without interrupting traffic |
| CN102635060A (en) * | 2012-05-02 | 2012-08-15 | 周劲宇 | Concrete hollow slab bridge reinforced by transverse steel beams |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107700868A (en) * | 2017-11-14 | 2018-02-16 | 重庆市公安消防总队 | A kind of new crab-bolt steel plate reinforcement refractory system and its reinforcement means |
| CN108797389A (en) * | 2018-06-26 | 2018-11-13 | 辽宁省交通规划设计院有限责任公司 | Enhance Hollow Slab Beam Bridge lateral ties ruggedized construction and its construction method |
| CN108824222A (en) * | 2018-06-26 | 2018-11-16 | 辽宁省交通规划设计院有限责任公司 | Cored slab lateral ties ruggedized construction and its construction method are enhanced using steel corrugated plating |
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Application publication date: 20160406 |