CN103541301A - Hinge joint structure with perforated steel plate and construction method of hinge joint structure - Google Patents
Hinge joint structure with perforated steel plate and construction method of hinge joint structure Download PDFInfo
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- CN103541301A CN103541301A CN201310480848.4A CN201310480848A CN103541301A CN 103541301 A CN103541301 A CN 103541301A CN 201310480848 A CN201310480848 A CN 201310480848A CN 103541301 A CN103541301 A CN 103541301A
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Abstract
The invention relates to an assembly type hollow slab bridge hinge joint structure with a perforated steel plate and a construction method of the assembly type hollow slab bridge hinge joint structure. The assembly type hollow slab bridge hinge joint structure comprises a prefabricated hollow plate, a hinge joint and the perforated steel plate, wherein a steel plate is buried at first when the prefabricated hollow plate is manufactured; the perforated steel plate is welded on the pre-buried steel plate; crossed reinforcing steel bars and longitudinal reinforcing steel bars are arranged in the hinge joint; and the hinge joint is made of common concrete or micro-expansion concrete. By the perforated steel plate, fissures of combined surfaces of the hollow plate and the hinge joint can be effectively limited and stopped from upwards expanding from the bottom; load transmitting capability of the hinge joint structure is improved; the service life of the hinge joint structure is prolonged; the maintenance cost is reduced; the hinge joint structure is easy and convenient to construct; and the shortcomings that constructional reinforcements of the existing domestic assembly type hollow slab bridge hinge joint combination surface are dug out difficultly, are stressed uncertainly, and are easily damaged in practical application are overcome.
Description
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Technical field
The present invention relates to a kind of seam of the hinge with open pore steel plate structure and job practices thereof, belong to building building technology field.
Background technology
According to interrelated data, show, end assembling Hollow Slab Beam Bridges in 2010 shared ratio in highway in China Modular Bridge System and reached 64%.This class bridge have building height low, be convenient to the advantages such as prefabricated, design and construction is easy.Assembling hollow slab bridge constructs to realize the cross direction profiles of load by cast-in-situ concrete ribbet, prevent that single beam stress is excessive.By the assembling hollow slab bridge to runing, carry out field investigation discovery, because many reason hinges of design, construction and operation stage are stitched the Major Diseases form that the hinge seam diseases such as bottom infiltration is whitened, bottom mortar comes off, longitudinal cracking are called this class bridge.Along with the development of hinge seam disease, hinge seam structure is progressively lost the ability of lateral transport load, finally causes the stressed phenomenon of veneer to occur, assembling hollow slab bridge life-span and traffic safety are caused to grave danger.
Domestic reinforcing and corrective measure of stitching for hinge at present roughly can be divided into two classes: the one, and the lifting of transverse integral performance, the 2nd, the improvement of hinge seam structure.The lifting of transverse integral performance mainly contains two kinds of methods: (1) lateral prestressing tendon.At span centre and end arranges external prestressing steel bundle or at one diaphragm of span centre setting and wear prestressed strand in beam, this measure relates to prestressed construction technology, relative complex in operation.In addition according to the assembling hollow slab bridge related data of the U.S., after the measure of employing transverse prestress, still have disease appearance such as bridge floor longitudinal cracking, the infiltration whiting of hinge seam bottom; (2) in hinge seam both sides, adjacent hollowcore slab bottom is implanted crab-bolt junction steel plate or connecting reinforcement is set, or by pre-buried angle steel and implement welding, makes compatibility of deformation between adjacent panel, consistent.This class measure meeting causes hollowcore slab bottom occur longitudinal crack and can under to a certain degree, affect under-clearance.The improvement of hinge seam structure concentrates on three class measures: (1) replaces the cross wise reinforcement generally adopting in hinge seam with the elliptoid stirrup of approximate tip, and this class measure difficulty in construction is large and mechanics theory is unintelligible; (2) at the pre-buried one section of long steel plate with holes of hinge seam sidewall, during the hinge seam concrete construction of this class measure steel plate downside when construction, can exist to water and smash difficulty, and due to its not elongated setting, comparatively limited to the restriction in bonding surface crack; (3) bonding surface is arranged distributing bar.These distributing bars all need to be first close to side form when prefabricated, need to pull out after form removal.If reinforcing bar and side form laminating closely can not cause the phenomenon of reinforcing bar Transducers Embedded in Concrete, make reinforcing bar be difficult to be found and cause to be difficult to curvedly go out or at all cannot be curved go out, even if can find out the particular location of hinge seam reinforcing bar, need will could be curved after concrete chisel removal go out, workload and working strength are larger.
Known in conjunction with current field investigation, experimental study and finite element analysis result, the hollowcore slab of assembling hollow slab bridge is its weak link with the bonding surface of hinge seam.Study and show in the ever-increasing situation of outer load, hollowcore slab ftractures from bottom with hinge seam bonding surface, and along constantly upwards expansion of bonding surface, finally forms straight joint.
Summary of the invention
In order to overcome the deficiency of current domestic hinge seam structure, technical problem to be solved by this invention is to provide a kind of seam of the hinge with open pore steel plate and constructs, and improves horizontal reliability and the durability connecting of assembling hollow slab bridge that adopts this novel hinge seam structure.
To achieve these goals, technical scheme of the present invention is: a kind of seam of the hinge with open pore steel plate structure, when making, described precast hollow slab first buries steel plate underground, described open pore steel plate is welded on pre-embedded steel slab, in described hinge seam, arrange cross wise reinforcement and longitudinal reinforcement, described hinge seam adopts ordinary concrete or slightly expanded concrete.
Further, described precast hollow slab when making according to design attitude by pre-embedded steel slab and stirrup welding, can make the mid point of pre-embedded steel slab weld side be placed in hollowcore slab with cut with scissors sew on, the point of interface place of bottom bonding surface.
Further, described precast hollow slab is removed the laitance of pre-embedded steel slab pre-embedded steel slab exposed face after stripping, and cleaning is clean.
Further, described open pore steel plate width width is b, and in the non-weld side of steel plate, offering radius is the semicircle orifice that b/2, longitudinal pitch are b, steel plate along vertical bridge to length approach hollowcore slab precast length or identical with precast length.
Further, the cross wise reinforcement and the longitudinal reinforcement bottom cross wise reinforcement that in described hinge seam, along vertical bridge, to arrangement pitch, are 15-30cm.
Simultaneously, the present invention also provides a kind of job practices of the seam of the hinge with open pore steel plate structure, carry out according to the following steps: when (1) makes at precast hollow slab, pre-embedded steel slab is welded on stirrup according to design attitude, can makes the mid point of pre-embedded steel slab weld side be placed in that hollowcore slab is sewed on hinge, the point of interface place of bottom bonding surface; (2) after stripping, just the laitance of pre-embedded steel slab pre-embedded steel slab exposed face is removed, and cleaning is clean; (3) open pore steel plate weld side is welded on to the point midway of pre-embedded steel slab exposed face; (4) will after hinge seam Reinforcement and cross wise reinforcement colligation shaping, put into hinge seam, and build hinge seam concrete.
Further, in step (3), the width of described open pore steel plate is b, and in the non-weld side of steel plate, offering radius is the semicircle orifice that b/2, longitudinal pitch are b, steel plate along vertical bridge to length approach hollowcore slab precast length or identical with precast length.
Further, in step (4), the vertical bridge of described cross wise reinforcement is 15-30cm to spacing, and described hinge seam Reinforcement is placed on cross wise reinforcement bottom; Described concrete is ordinary concrete or slightly expanded concrete, and takes certain measure to guarantee concrete compaction.
As known from the above, the present invention is as a kind of seam of the hinge with open pore steel plate structure and job practices thereof, can effectively limit and stop bonding surface crack upwards to expand, improve hinge seam structure and transmit weight bearing power and application life, and reduction maintenance cost, easy construction, has overcome current domestic assembling hollow slab bridge hinge seam bonding surface distributing bar and has dug out the shortcoming that is prone to disease in difficulty, stressed indefinite, practical application.
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Accompanying drawing explanation
Fig. 1 is the front view of the embodiment of the present invention.
Fig. 2 is open pore steel plate top view.
Fig. 3 is pre-embedded steel slab sectional drawing.
1-precast hollow slab in figure, 2-cuts with scissors seam, 3-hollowcore slab stirrup, 4-open pore steel plate, 5-pre-embedded steel slab, 6-cross wise reinforcement, 7-hinge seam Reinforcement, 1-1 hollowcore slab is sewed on hinge, the point of interface place of bottom bonding surface, 4-1 open pore steel plate weld side, the non-weld side of 4-2 open pore steel plate, 5-1 pre-embedded steel slab weld side, 5-2 pre-embedded steel slab exposed face.
The specific embodiment
As Figure 1-3, a kind of seam of the hinge with open pore steel plate structure, comprise precast hollow slab 1, hinge seam 2, open pore steel plate 4 and pre-embedded steel slab 5, described precast hollow slab 1 is first buried pre-embedded steel slab 5 underground when making, described open pore steel plate 4 is welded on pre-embedded steel slab 5, in described hinge seam 2, arrange cross wise reinforcement 6 and longitudinal reinforcement 7, described hinge seam 2 adopts ordinary concrete or slightly expanded concrete.
In the present embodiment, described precast hollow slab 1, when making, is welded on the weld side 5-1 of pre-embedded steel slab 5 on stirrup 3, can make the mid point of pre-embedded steel slab weld side 5-1 be placed in that hollowcore slab is sewed on hinge, the 1-1 of point of interface place of bottom bonding surface.Described precast hollow slab 1 is removed the laitance on the exposed face 5-2 surface of pre-embedded steel slab 5 after stripping, and cleaning is clean.The weld side 4-1 of described open pore steel plate 4 is welded on the point midway of pre-embedded steel slab exposed face 5-2.Described hinge is stitched the cross wise reinforcement 6 that in 2, layout is 15-30cm along vertical bridge to spacing and is placed on the hinge seam Reinforcement 7 of cross wise reinforcement 6 bottoms.
As shown in Fig. 1-3, a kind of seam of the hinge with open pore steel plate construction method, carries out according to the following steps:
(1) when precast hollow slab 1 is made, the weld side 5-1 of pre-embedded steel slab 5 is welded on stirrup 3 according to design attitude, can makes the mid point of pre-embedded steel slab weld side 5-1 be placed in that hollowcore slab is sewed on hinge, the 1-1 of point of interface place of bottom bonding surface;
(2) after stripping, the laitance on the exposed face 5-2 surface of steel plate 5 is removed, and cleaning is clean;
(3) the weld side 4-1 of open pore steel plate 4 is welded on to the point midway of pre-embedded steel slab exposed face 5-2;
(4) will after hinge seam Reinforcement 7 and cross wise reinforcement 6 colligations shapings, put into hinge seam 2, and build hinge and stitch concrete.
In the present embodiment, described in step (3), the width of open pore steel plate 4 is b, and on the non-weld side 4-2 of steel plate, offering radius is the semicircle orifice that b/2, longitudinal pitch are b.The vertical bridge of cross wise reinforcement described in step (4) 6 is 15-30cm to spacing, and described hinge seam Reinforcement 7 is placed on cross wise reinforcement 6 bottoms; Described concrete is ordinary concrete or slightly expanded concrete, and takes certain measure to guarantee concrete compaction.
The present invention is not limited to above-mentioned preferred forms, and anyone can draw other various forms of assembling hollow slab bridge hinge seam structures under enlightenment of the present invention.All equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (8)
1. the seam of the hinge with open pore steel plate is constructed, comprise precast hollow slab, hinge seam, open pore steel plate, it is characterized in that: when described precast hollow slab is made, first bury steel plate underground, described open pore steel plate is welded on pre-embedded steel slab, in described hinge seam, arrange cross wise reinforcement and longitudinal reinforcement, described hinge seam adopts ordinary concrete or slightly expanded concrete.
2. a kind of seam of the hinge with open pore steel plate according to claim 1 is constructed, it is characterized in that: described precast hollow slab when making according to design attitude by pre-embedded steel slab and stirrup welding, can make the mid point of pre-embedded steel slab weld side be placed in hollowcore slab with cut with scissors sew on, the point of interface place of bottom bonding surface.
3. a kind of seam of the hinge with open pore steel plate structure according to claim 1, it is characterized in that: described precast hollow slab is removed the laitance of pre-embedded steel slab exposed face after stripping, and cleaning is clean.
4. a kind of seam of the hinge with open pore steel plate according to claim 1 is constructed, it is characterized in that: described open pore steel plate width width is b, in the non-weld side of steel plate, offering radius is the semicircle orifice that b/2, longitudinal pitch are b, steel plate along vertical bridge to length approach hollowcore slab precast length or identical with precast length.
5. a kind of seam of the hinge with open pore steel plate according to claim 1 is constructed, and it is characterized in that: the cross wise reinforcement that is 15-30cm along vertical bridge to arrangement pitch in described hinge seam and the longitudinal reinforcement bottom cross wise reinforcement.
6. a job practices of constructing with the hinge seam of open pore steel plate, is characterized in that, carries out according to the following steps:
(1) when precast hollow slab is made, pre-embedded steel slab is welded on stirrup, can makes the mid point of pre-embedded steel slab weld side be placed in that hollowcore slab is sewed on hinge, the point of interface place of bottom bonding surface;
(2) after stripping, the laitance of pre-embedded steel slab exposed face is clear, and cleaning is clean;
(3) open pore steel plate is welded on to the point midway of pre-embedded steel slab exposed face;
(4) will after hinge seam Reinforcement and cross wise reinforcement colligation shaping, put into hinge seam, and build hinge seam concrete.
7. the job practices that a kind of seam of the hinge with open pore steel plate according to claim 6 is constructed, it is characterized in that: in step (3), the width of described open pore steel plate is b, in the non-weld side of steel plate, offering radius is the semicircle orifice that b/2, longitudinal pitch are b, steel plate along vertical bridge to length approach hollowcore slab precast length or identical with precast length.
8. the job practices of a kind of seam of the hinge with open pore steel plate structure according to claim 6, is characterized in that: in step (4), the vertical bridge of described cross wise reinforcement is 15-30cm to spacing, and described Reinforcement is placed on cross wise reinforcement bottom; Described concrete is ordinary concrete or slightly expanded concrete, should take certain measure to make hinge seam concrete vibrating closely knit.
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| CN201310480848.4A CN103541301B (en) | 2013-10-15 | 2013-10-15 | Hinge joint structure with perforated steel plate and construction method of hinge joint structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898841A (en) * | 2014-04-23 | 2014-07-02 | 魏志新 | Hollow slab bridge reinforcing method |
| CN105648899A (en) * | 2016-04-07 | 2016-06-08 | 华北水利水电大学 | Hinge joint reinforcement bar structure for concrete hollow slab bridge |
| CN107687128A (en) * | 2017-10-20 | 2018-02-13 | 福州大学 | Using the assembly hollow slab bridges structure and its construction method of del hinge seam |
| CN109537464A (en) * | 2018-12-11 | 2019-03-29 | 中交公局土木工程建筑研究院有限公司 | Assembled bent cap-pier stud reserved joint straight seam model template |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820512B (en) * | 2019-11-20 | 2021-03-12 | 北京市市政工程研究院 | Plate-girder transverse connecting device and construction method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898841A (en) * | 2014-04-23 | 2014-07-02 | 魏志新 | Hollow slab bridge reinforcing method |
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| CN107687128A (en) * | 2017-10-20 | 2018-02-13 | 福州大学 | Using the assembly hollow slab bridges structure and its construction method of del hinge seam |
| CN109537464A (en) * | 2018-12-11 | 2019-03-29 | 中交公局土木工程建筑研究院有限公司 | Assembled bent cap-pier stud reserved joint straight seam model template |
| CN109537464B (en) * | 2018-12-11 | 2023-08-04 | 中交一公局土木工程建筑研究院有限公司 | Assembled bent cap-pier stud reserved joint straight joint model template |
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