CN205557302U - Section section precast box girder's a seam connection structure is assembled to short line method - Google Patents
Section section precast box girder's a seam connection structure is assembled to short line method Download PDFInfo
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- CN205557302U CN205557302U CN201620377315.2U CN201620377315U CN205557302U CN 205557302 U CN205557302 U CN 205557302U CN 201620377315 U CN201620377315 U CN 201620377315U CN 205557302 U CN205557302 U CN 205557302U
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Abstract
The utility model provides an it is gluey that the gap filling has the segment girder concatenation within a definite time that section section precast box girder's a seam connection structure is assembled to short line method sets up many vertical slip casting pipes in the gap between adjacent festival section precast beam, and filled the cementation of fissures in the gap of the intraductal and slip casting pipe below of slip casting and glued, between the adjacent slip casting pipe the both sides cutting on gap top has the repair recess, pours the concrete connecting block of burying the reinforcing bar net underground in the repair recess. The utility model discloses to the gap repair effect ideal of section precast box girder seam interface department, and the construction flow of this structure is comparatively simple, and the construction operation degree of difficulty is lower, economically feasible, and the concatenation of adoption is glued and can be restricted the crack development effectively with the wire net, and waste and quality hidden danger that traditional restoration method caused have also been avoided to the while.
Description
Technical field
This utility model belongs to science of bridge building field, is specifically related to the seam attachment structure of a kind of short line casting assembly precast segment box beam.
Background technology
Along with China's economic development, industrialization section assembling construction technology obtains broad development and application in bridge construction field.Relative to traditional cast-in-place construction, traffic and surrounding enviroment are affected little by Precast Concrete Segmental Bridges construction, and the overhead road of city construction that, traffic pressure limited to construction site is big has clear superiority.Short line casting is the one of industrialization section assembling construction technology, refers to be divided into some sections by one across structure, uses same adjustable template block-by-block to pour the construction method of sections.When pouring, pour lower sections using pouring sections as matching segment.During installation, adjusting box beam absolute altitude, plan-position and longitudinal and transverse slope, be allowed to meet alignment control required precision, between segmental joints face, brushing beam sections splicing glue, applies interim prestressing force, pours integral by wet seam afterwards.Due to box section change width or curve section, at segmental joints, the most inevitably produce gap.And in construction, as beam sections end face is polished before dispatching from the factory, individual sites polishing out-of-flatness causes beam-ends face male and fomale(M&F) occur, when beam sections is spliced because making two segment beam individual sites after splicing gap occur with the presence of male and fomale(M&F)；The splicing glue that beam sections is smeared when splicing is in uneven thickness, and individual sites smearing thickness gap occurs not；Indivedual beam sections are when producing, because breakage occurs in stripping operation beam-ends lack of standardization face, damaged part after repair not up to the coincideing of first wife face, cause respective location after two segment beam splices that gap occurs.Owing to the quantity of segmental joints is more, above-mentioned the most often occur because of the seam quality problem that causes of construction, if thinking little of the process at abutment joint, can weaken seam and the mechanical property of neighbouring concrete thereof.Under the external load percussions that are long-term and that move in circles such as vertical load (deadweight) and vehicle, each sections may produce relatively large shear creep at seam crossing.Current specifications (CECS 25:90 " Reinforcement Technology of Concrete Structure specification ") is although the process to gap has involved, but the bore diameter that the boring method more pressing close to precast segment box girder bridge repairs regulation is relatively big (56mm), pitch-row is relatively big (2-3m), is not suitable for using in precast segment box beam.
Utility model content
The purpose of this utility model is, is proposed for the attachment structure of precast segment box beam seam crossing in short line casting construction, can effectively solve the gap problem that short line casting precast segment box beam splicing end face produces.
In order to solve above-mentioned technical problem, this utility model be the technical scheme is that the seam attachment structure of a kind of short line casting assembly precast segment box beam, many vertical Grouting Pipe are set in gap between adjacent segment precast beam, it is perfused with base joint grouting glue in gap in Grouting Pipe and below Grouting Pipe, gap between adjacent Grouting Pipe is filled with beam sections splicing glue, the both sides on top, described gap are cut with repairing groove, pour, in repairing groove, the concrete contiguous block burying bar-mat reinforcement underground.
Further, the distance between described adjacent Grouting Pipe is 400 ~ 500mm.
Further, in described bar-mat reinforcement, the spacing of adjacent reinforcing bar is 30mm.
Compared with prior art, the beneficial effects of the utility model are:
This utility model is preferable to the gap repairing effect of precast segment box beam seam interface, and the construction process of this structure is relatively simple, constructing operation difficulty is relatively low, economically feasible, the splicing glue and the steel wire that use can limit crack progressing effectively, it also avoid waste and hidden danger of quality that tradition restorative procedure causes simultaneously.
Accompanying drawing explanation
Fig. 1 is planar structure schematic diagram of the present utility model.
Fig. 2 is cross-sectional view of the present utility model.
Labelling in figure: 1, precast segment box beam, 2, gap, 3, Grouting Pipe, 4, repair groove, 5, bar-mat reinforcement, 6, concrete contiguous block.
Detailed description of the invention
Below in conjunction with the accompanying drawings, by specific embodiment this utility model is further described.
As shown in the figure, a kind of seam attachment structure of short line casting assembly precast segment box beam, many vertical Grouting Pipe are set in the gap between adjacent segment prefabricated case beam, base joint grouting glue it is perfused with in Grouting Pipe, gap filling between adjacent Grouting Pipe has beam sections to splice glue, the both sides on top, described gap are cut with repairing groove, pour, in repairing groove, the concrete contiguous block burying bar-mat reinforcement underground.
The concrete construction method of this attachment structure is as follows:
Step one: the concrete of both sides, top, gap to be repaired is cut away and repairs groove to be formed；
Step 2: vertically get out the injected hole of multiple a diameter of 10mm along the trend in gap with electric drill, the degree of depth of injected hole is 100 ~ 150mm, and the distance between adjacent injected hole is 400mm；
Step 3: with beam sections splicing glue, Grouting Pipe is arranged in described injected hole, and injected hole is exposed in the upper end of Grouting Pipe；
Step 4: with beam sections splicing glue by the gap filling between Grouting Pipe so that form a seal cavity in gap；
Step 5: after above-mentioned beam sections splicing glue is fully hardened, grouting system is installed, grouting system includes grouting pump, base joint grouting glue holding vessel and grouting hose, grouting hose is connected in Grouting Pipe, starts grouting pump and is poured in gap to be repaired by grouting hose, Grouting Pipe by the base joint grouting glue in base joint grouting glue holding vessel；When base joint grouting glue overflows with the adjacent Grouting Pipe mouth of pipe, close down grouting pump, and block the Grouting Pipe being connected with grouting hose, then Grouting Pipe adjacent with this for grouting hose is connected and carry out mud jacking；Then repeating described grouting step to penultimate Grouting Pipe, when base joint grouting glue overflows from last Grouting Pipe mouth of pipe, block overfall, pressurize blocked stock inlet, i.e. penultimate Grouting Pipe after two minutes；
Step 6: after base joint grouting glue reaches design strength, the groove bottom along described repairing groove is excised Grouting Pipe, and is removed sections splicing glue trace；
Step 7: laying bar-mat reinforcement in described repairing groove, in bar-mat reinforcement, the spacing of reinforcing bar is 30mm in length and breadth, a diameter of 4mm of reinforcing bar, then with concreting in repairing groove, forms concrete contiguous block, maintenance 2 ~ 3 days after completing.
In step 5, the pressure of grouting is 0.2-0.4Mpa, and pressure should gradually rise, and preventing pressurizes suddenly makes joint seal burst.
This utility model is preferable to the gap repairing effect of precast segment box beam seam interface, and the construction process of this structure is relatively simple, constructing operation difficulty is relatively low, economically feasible, the splicing glue and the steel wire that use can limit crack progressing effectively, it also avoid waste and hidden danger of quality that tradition restorative procedure causes simultaneously.
Embodiment 2: on the basis of embodiment 1, during this attachment structure of constructing, the distance between adjacent injected hole is 500mm.
Embodiment 3: on the basis of embodiment 1, during this attachment structure of constructing, the distance between adjacent injected hole is 450mm.
Claims (3)
1. the seam attachment structure of a short line casting assembly precast segment box beam, it is characterized in that: many vertical Grouting Pipe (3) are set in gap (2) between adjacent segment prefabricated case beam (1), it is perfused with base joint grouting glue in Grouting Pipe (3) and in the gap (2) of Grouting Pipe (3) lower section, gap between adjacent Grouting Pipe (3) is filled with beam sections splicing glue, the both sides on described gap (2) top are cut with repairing groove (4), pour, in repairing groove (4), the concrete contiguous block (6) burying bar-mat reinforcement (5) underground.
The seam attachment structure of a kind of short line casting assembly precast segment box beam the most according to claim 1, it is characterised in that: the distance between described adjacent Grouting Pipe (3) is 400 ~ 500mm.
The seam attachment structure of a kind of short line casting assembly precast segment box beam the most according to claim 1, it is characterised in that: in described bar-mat reinforcement (5), the spacing of adjacent reinforcing bar is 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620377315.2U CN205557302U (en) | 2016-04-29 | 2016-04-29 | Section section precast box girder's a seam connection structure is assembled to short line method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620377315.2U CN205557302U (en) | 2016-04-29 | 2016-04-29 | Section section precast box girder's a seam connection structure is assembled to short line method |
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| CN205557302U true CN205557302U (en) | 2016-09-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108396637A (en) * | 2018-04-28 | 2018-08-14 | 福州大学 | Based on short-line prefabrication assembly girder construction and its construction method |
| CN109208838A (en) * | 2017-06-29 | 2019-01-15 | 北京市建筑工程研究院有限责任公司 | Plant anchor foamed ceramic or foamed glass light thermal insulation decoration Side fascia and preparation method thereof after a kind of |
| CN112281627A (en) * | 2020-09-21 | 2021-01-29 | 宁波交通工程建设集团有限公司 | Steel bar joint structure of prefabricated section T beam |
| CN114737478A (en) * | 2022-03-02 | 2022-07-12 | 中铁广州工程局集团有限公司 | Device for adhering glue to assembly joint of sectional beam and painting method |
| CN114775445A (en) * | 2022-05-25 | 2022-07-22 | 长沙市公路桥梁建设有限责任公司 | Prefabricated bridge segment splicing structure and splicing method |
-
2016
- 2016-04-29 CN CN201620377315.2U patent/CN205557302U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109208838A (en) * | 2017-06-29 | 2019-01-15 | 北京市建筑工程研究院有限责任公司 | Plant anchor foamed ceramic or foamed glass light thermal insulation decoration Side fascia and preparation method thereof after a kind of |
| CN108396637A (en) * | 2018-04-28 | 2018-08-14 | 福州大学 | Based on short-line prefabrication assembly girder construction and its construction method |
| CN112281627A (en) * | 2020-09-21 | 2021-01-29 | 宁波交通工程建设集团有限公司 | Steel bar joint structure of prefabricated section T beam |
| CN112281627B (en) * | 2020-09-21 | 2021-05-11 | 宁波交通工程建设集团有限公司 | Steel bar joint structure of prefabricated section T beam |
| CN114737478A (en) * | 2022-03-02 | 2022-07-12 | 中铁广州工程局集团有限公司 | Device for adhering glue to assembly joint of sectional beam and painting method |
| CN114737478B (en) * | 2022-03-02 | 2024-03-01 | 中铁广州工程局集团有限公司 | Segment beam assembly joint bonding glue device and brushing method |
| CN114775445A (en) * | 2022-05-25 | 2022-07-22 | 长沙市公路桥梁建设有限责任公司 | Prefabricated bridge segment splicing structure and splicing method |
| CN114775445B (en) * | 2022-05-25 | 2023-12-22 | 长沙市公路桥梁建设有限责任公司 | Prefabricated bridge segment splicing structure and splicing method |
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