CN103194983A - Segmental precast assembly method and segmental precast assembly structure for cantilever arm of large capping beam - Google Patents

Segmental precast assembly method and segmental precast assembly structure for cantilever arm of large capping beam Download PDF

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Publication number
CN103194983A
CN103194983A CN2013101503639A CN201310150363A CN103194983A CN 103194983 A CN103194983 A CN 103194983A CN 2013101503639 A CN2013101503639 A CN 2013101503639A CN 201310150363 A CN201310150363 A CN 201310150363A CN 103194983 A CN103194983 A CN 103194983A
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CN
China
Prior art keywords
prefabricated
arm
centre
precast
bent cap
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Application number
CN2013101503639A
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Chinese (zh)
Inventor
周振兴
闫兴非
王勇
吴连盛
葛景春
Original Assignee
上海市城市建设设计研究总院
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Application filed by 上海市城市建设设计研究总院 filed Critical 上海市城市建设设计研究总院
Priority to CN2013101503639A priority Critical patent/CN103194983A/en
Publication of CN103194983A publication Critical patent/CN103194983A/en

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Abstract

The invention discloses a segmental precast assembly method for a cantilever arm of a large capping beam. The segmental precast assembly method comprises the following steps of: segmentally precasting the capping beam, namely, precasting a middle precast segment and cantilever arm precast segments; hoisting the middle precast segment on a bridge pier by a hoist, and finishing precast assembly for the middle precast segment with the bridge pier via a longitudinal sleeve; hoisting and connecting the cantilever arm precast segments towards the both ends of the middle precast segment in an extending manner; and finishing the hoisting and connecting for the whole cantilever arm precast segments, then guiding in prestressed tendons, and finishing assembly for the whole capping beam. The invention further discloses a segmental precast assembly structure for the cantilever arm of the large capping beam. The segmental precast assembly structure comprises a middle precast segment and at least two cantilever arm precast segments. The segmental precast assembly method and the segmental precast assembly structure for the cantilever arm of the large capping beam disclosed by the invention are low in requirements on capping beam precast and site hoisting construction, good in construction stability, and suitable for construction and building for the large capping beam.

Description

Large-scale bent cap is chosen arm segmentation precast segment assembling method and splicing structure thereof
Technical field
The present invention relates to the technical field of prefabricated bent cap construction, relate in particular to a kind of large-scale bent cap and choose arm segmentation precast segment assembling method and splicing structure thereof.
Background technology
Bent cap construction in the bridge is one of emphasis of bridge construction, the job practices that the tradition bent cap mainly adopts is the carriage method, mould is set with concreting on bridge pier top, after solidifying by concrete curing mould is removed, there is following shortcoming in this method: the cycle of 1, setting up is long; 2, labor intensive and material; 3, in the Urban Bridge construction, can limit traffic above-ground; 4, for the relatively poor place support ground processing cost height of geological conditions; 5, higher to site requirements.
Therefore, in order to overcome the deficiency that above-mentioned carriage method construction exists, existing how the prefabricated bent cap of employing reproduces a rapid constructing method of lifting, specifically according to the prefabricated bent cap of construction requirement elder generation, bent cap is transported to the job site again and carries out integral hoisting.Constructing of the very suitable middle-size and small-size bent cap of this method, but for the constructing of large-scale bent cap (as above 400 tons), the suspender that is difficult to coupling at the scene carries out lifting operation, and excessive owing to volume and weight, construction requirement is higher, and has potential safety hazard.
Therefore, those skilled in the art is devoted to develop a kind of prefabricated lower with the on-site hoisting construction requirement to bent cap always, is applicable to that the large-scale bent cap of large-scale bent cap construction is chosen arm segmentation precast segment assembling method and splicing structure thereof.
Summary of the invention
Because above-mentioned the deficiencies in the prior art, the present invention proposes a kind of prefabricated lower with the on-site hoisting construction requirement to bent cap, is applicable to that the large-scale bent cap of large-scale bent cap construction is chosen arm segmentation precast segment assembling method and splicing structure thereof.
For achieving the above object, the invention provides a kind of large-scale bent cap and choose arm segmentation precast segment assembling method, may further comprise the steps:
Step 1: according to designing requirement, described bent cap is carried out prefabricate, at least two joints that described bent cap comprises prefabricated section of the centre that is layered on the bridge pier and is connected prefabricated section two ends, described centre are chosen prefabricated section of arm, described centre is provided with the vertical sleeve pipe that is connected with described bridge pier for prefabricated section, prefabricated section of described centre with described choose to be provided with on the end face being connected of prefabricated section of arm connect tongue and groove and run through the horizontal sleeve pipe that is provided be used to wearing presstressed reinforcing steel;
Step 2: adopt loop wheel machine with the prefabricated section lifting in described centre to described bridge pier, finish the precast spliced of prefabricated section of described centre and described bridge pier by described vertical sleeve pipe;
Step 3: the extension of prefabricated section two ends is hung and is connect described prefabricated section of the arm of choosing towards described centre, is connected and fixed by described connection tongue and groove;
Step 4: finish described whole hanging of choosing prefabricated section of arm and connect, laterally run through prefabricated section of described centre and described prefabricated section importing of the arm presstressed reinforcing steel of choosing by described horizontal sleeve pipe again, finish the whole assembly unit of large-scale bent cap.
What as a further improvement on the present invention, the both ends of prefabricated section in described centre of described step 3 arranged bridge floor loop wheel machine lifting both ends of the surface chooses prefabricated section of arm.
Technique scheme especially is fit to the construction of large-scale bent cap, this assembling method utilizes prefabricated section of prefabricate centre and two ends to choose prefabricated section of arm, construct large-scale bent cap in the lifting splicing of bent cap job site, and pre-buried vertical sleeve pipe and horizontal sleeve pipe and choosing pre-buried horizontal sleeve pipe on prefabricated section of the arm on prefabricated section in the centre, make it stably to carry out precast spliced at bridge pier, overcome the shortcoming that carriage method and existing on-the-spot whole hanging method exist simultaneously, reached rapid construction, lifted convenient, as to reduce prefabricated requirement and construction requirement purpose.
The present invention also proposes a kind of large-scale bent cap and chooses arm segmentation precast segment splicing structure, prefabricated section and at least two is saved and to choose prefabricated section of arm in the middle of comprising, described centre is provided with the vertical sleeve pipe that is connected with bridge pier for prefabricated section, prefabricated section of described centre with described choose to be provided with on the end face being connected of prefabricated section of arm connect tongue and groove and run through the horizontal sleeve pipe that is provided be used to wearing presstressed reinforcing steel, described prefabricated section of the arm of choosing is fixed on the both ends of the surface of prefabricated section of described centre by described connection tongue and groove lifting, and prefabricated section of described centre and described choose to run through between prefabricated section of the arm be provided with described presstressed reinforcing steel.
Large-scale bent cap of the present invention is chosen arm segmentation precast segment splicing structure, and is simple and reliable for structure, is particularly useful for constructing of large-scale bent cap, reduced greatly and constructed difficulty, and it is good to construct process stability, is convenient to site operation.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand purpose of the present invention, feature and effect fully.
Description of drawings
The schematic process flow diagram that Fig. 1 chooses arm segmentation precast segment assembling method for large-scale bent cap.
Fig. 2 chooses the application schematic diagram of arm segmentation precast segment splicing structure for large-scale bent cap.
Fig. 3 is the vertical view of Fig. 2.
The specific embodiment
Embodiment one:
The schematic process flow diagram that Fig. 1 chooses arm segmentation precast segment assembling method for large-scale bent cap.Present embodiment proposes a kind of large-scale bent cap and chooses arm segmentation precast segment assembling method, realization successfully lifts the large-scale bent cap above 400 tons to two bridge piers, as shown in Figure 1, present embodiment is that prefabricated section and two joints match in the middle of the prefabricated joint chooses prefabricated section of arm and carries out the scene at two bridge piers and splice, and it specifically may further comprise the steps:
Step S1: according to designing requirement, described bent cap is carried out prefabricate, at least two joints that described bent cap comprises prefabricated section of the centre that is layered on the bridge pier and is connected prefabricated section two ends, described centre are chosen prefabricated section of arm, described centre is provided with the vertical sleeve pipe that is connected with described bridge pier for prefabricated section, prefabricated section of described centre with described choose to be provided with on the end face being connected of prefabricated section of arm connect tongue and groove and run through the horizontal sleeve pipe that is provided be used to wearing presstressed reinforcing steel;
Step S2: adopt loop wheel machine with the prefabricated section lifting in described centre to described bridge pier, finish the precast spliced of prefabricated section of described centre and described bridge pier by described vertical sleeve pipe;
Step S3: the extension of prefabricated section two ends is hung and is connect described prefabricated section of the arm of choosing towards described centre, is connected and fixed by described connection tongue and groove;
Step S4: finish described whole hanging of choosing prefabricated section of arm and connect, laterally run through prefabricated section of described centre and described prefabricated section importing of the arm presstressed reinforcing steel of choosing by described horizontal sleeve pipe again, finish the whole assembly unit of large-scale bent cap.
As the further specific embodiment of present embodiment, what the both ends that the step S3 of present embodiment is prefabricated section in described centre arranged bridge floor loop wheel machine lifting both ends of the surface chooses prefabricated section of arm.
Certainly, in other specific embodiments, if it is long to choose prefabricated section of arm, can also to be divided into multistage prefabricated with choosing prefabricated section of arm, carry out as above on-the-spot assembly unit again.
The assembling method of present embodiment especially is fit to large-scale bent cap prefabricatedly hangs the act assembly unit, and compared to the carriage method of prior art, the required duration of present embodiment is shorter, over the ground hand-deliver pass to and ambient influnence littler; Compared to existing integral prefabricated lift-on/lift-off system, present embodiment has overcome the overweight problem that can't lift of integral hoisting bent cap, and the prefabricated section elder generation in the centre of present embodiment is arranged on separately on the corresponding bridge pier, it is comparatively convenient to hang act, stability is installed better, in the centre prefabricated section with after bridge pier is fixing again two ends is connected the tongue and groove extension and splices and choose prefabricated section of arm, its construction is convenient, quick, and can continue to two ends to extend to construct according to designing requirement, extendability be better.
Embodiment two:
Fig. 2 chooses the application schematic diagram of arm segmentation precast segment splicing structure for large-scale bent cap.Present embodiment can be constructed a kind of large-scale bent cap according to the construction sequence of above-described embodiment one and choose arm segmentation precast segment splicing structure, as shown in Figures 2 and 3, this splicing structure comprise in the middle of prefabricated section 1 and two the joint choose arm prefabricated section 2, middle prefabricated section 1 is provided with the vertical sleeve pipe (not shown) that is connected with bridge pier 3, middle prefabricated section 1 and choose being connected to be provided with on the end face and connecting the tongue and groove (not shown) and run through the horizontal sleeve pipe (not shown) that is provided be used to wearing presstressed reinforcing steel of prefabricated section 2 on arm, choose prefabricated section 2 on arm be fixed on by described connection tongue and groove lifting in the middle of on prefabricated section 1 the both ends of the surface, and prefabricated section of described centre and described choose to run through between prefabricated section of the arm be provided with described presstressed reinforcing steel.
Certainly, in other specific embodiments, if it is long or overweight to choose prefabricated section of arm, can also be divided into more piece and chooses prefabricated section of arm choosing prefabricated section of arm, again on the two ends of prefabricated section to the centre of assembly unit.
Present embodiment simple and reliable for structure is particularly useful for constructing of large-scale bent cap, reduced greatly and constructed difficulty, and it is good to construct process stability, is convenient to site operation.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can design according to the present invention make many modifications and variations.Therefore, all technician in the art all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims (3)

1. a large-scale bent cap is chosen arm segmentation precast segment assembling method, it is characterized in that, may further comprise the steps: step 1: according to designing requirement, described bent cap is carried out prefabricate, at least two joints that described bent cap comprises prefabricated section of the centre that is layered on the bridge pier and is connected prefabricated section two ends, described centre are chosen prefabricated section of arm, described centre is provided with the vertical sleeve pipe that is connected with described bridge pier for prefabricated section, prefabricated section of described centre with described choose to be provided with on the end face being connected of prefabricated section of arm connect tongue and groove and run through the horizontal sleeve pipe that is provided be used to wearing presstressed reinforcing steel;
Step 2: adopt loop wheel machine with the prefabricated section lifting in described centre to described bridge pier, finish the precast spliced of prefabricated section of described centre and described bridge pier by described vertical sleeve pipe;
Step 3: the extension of prefabricated section two ends is hung and is connect described prefabricated section of the arm of choosing towards described centre, is connected and fixed by described connection tongue and groove;
Step 4: finish described whole hanging of choosing prefabricated section of arm and connect, laterally run through prefabricated section of described centre and described prefabricated section importing of the arm presstressed reinforcing steel of choosing by described horizontal sleeve pipe again, finish the whole assembly unit of large-scale bent cap.
2. large-scale bent cap as claimed in claim 2 is chosen arm segmentation precast segment assembling method, it is characterized in that: what the both ends that described step 3 is prefabricated section in described centre arranged bridge floor loop wheel machine lifting both ends of the surface chooses prefabricated section of arm.
3. a large-scale bent cap is chosen arm segmentation precast segment splicing structure, it is characterized in that: prefabricated section and at least two is saved and to choose prefabricated section of arm in the middle of comprising, described centre is provided with the vertical sleeve pipe that is connected with bridge pier for prefabricated section, prefabricated section of described centre with described choose to be provided with on the end face being connected of prefabricated section of arm connect tongue and groove and run through the horizontal sleeve pipe that is provided be used to wearing presstressed reinforcing steel, described prefabricated section of the arm of choosing is fixed on the both ends of the surface of prefabricated section of described centre by described connection tongue and groove lifting, and prefabricated section of described centre and described choose to run through between prefabricated section of the arm be provided with described presstressed reinforcing steel.
CN2013101503639A 2013-04-26 2013-04-26 Segmental precast assembly method and segmental precast assembly structure for cantilever arm of large capping beam CN103194983A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103866698A (en) * 2014-03-14 2014-06-18 中铁十一局集团有限公司 Symmetrical suspension splicing bridge support seat end pseudo-suspension splicing construction method
CN105780663A (en) * 2016-04-25 2016-07-20 上海市城市建设设计研究总院 Large-span capping beam prefabrication and assembly method and large-span capping beam
CN106320164A (en) * 2016-08-22 2017-01-11 上海应用技术学院 Large prefabricated assembly cap beam with corbel structure and construction method
CN106320162A (en) * 2016-08-22 2017-01-11 上海应用技术学院 Prefabricated assembly cap beam structure with steel shear keys and construction method
CN109267489A (en) * 2018-10-17 2019-01-25 中铁大桥局集团有限公司 A kind of Anchorage Zone of Cable-stayed Bridge Pylon construction method
CN109322252A (en) * 2018-10-16 2019-02-12 上海市基础工程集团有限公司 Interim matching, fixed structure and method for Large-span Steel Box Beam free cantilever erection
CN109487706A (en) * 2018-12-14 2019-03-19 东南大学 A kind of assembled segmentation bent cap mounting device and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100066856A (en) * 2008-12-10 2010-06-18 한국건설기술연구원 Fabricated precast bridge pier and constructing method thereof
CN101845792A (en) * 2009-03-26 2010-09-29 株式会社大宇建设 Method for constructing cast coping part through multi-phase strain
KR101010540B1 (en) * 2008-07-21 2011-01-25 주식회사부원비엠에스 Half-precast coping construction method
CN203188132U (en) * 2013-04-26 2013-09-11 上海市城市建设设计研究总院 Segmental precasting assembly structure of large bent cap cantilever

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101010540B1 (en) * 2008-07-21 2011-01-25 주식회사부원비엠에스 Half-precast coping construction method
KR20100066856A (en) * 2008-12-10 2010-06-18 한국건설기술연구원 Fabricated precast bridge pier and constructing method thereof
CN101845792A (en) * 2009-03-26 2010-09-29 株式会社大宇建设 Method for constructing cast coping part through multi-phase strain
CN203188132U (en) * 2013-04-26 2013-09-11 上海市城市建设设计研究总院 Segmental precasting assembly structure of large bent cap cantilever

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103866698A (en) * 2014-03-14 2014-06-18 中铁十一局集团有限公司 Symmetrical suspension splicing bridge support seat end pseudo-suspension splicing construction method
CN105780663A (en) * 2016-04-25 2016-07-20 上海市城市建设设计研究总院 Large-span capping beam prefabrication and assembly method and large-span capping beam
CN105780663B (en) * 2016-04-25 2017-09-12 上海市城市建设设计研究总院(集团)有限公司 Long span bent cap precast assembly method and its Long span bent cap
CN106320164A (en) * 2016-08-22 2017-01-11 上海应用技术学院 Large prefabricated assembly cap beam with corbel structure and construction method
CN106320162A (en) * 2016-08-22 2017-01-11 上海应用技术学院 Prefabricated assembly cap beam structure with steel shear keys and construction method
CN109322252A (en) * 2018-10-16 2019-02-12 上海市基础工程集团有限公司 Interim matching, fixed structure and method for Large-span Steel Box Beam free cantilever erection
CN109267489A (en) * 2018-10-17 2019-01-25 中铁大桥局集团有限公司 A kind of Anchorage Zone of Cable-stayed Bridge Pylon construction method
CN109267489B (en) * 2018-10-17 2021-04-06 中铁大桥局集团有限公司 Construction method for cable-stayed bridge cable tower anchoring area
CN109487706A (en) * 2018-12-14 2019-03-19 东南大学 A kind of assembled segmentation bent cap mounting device and method
CN109487706B (en) * 2018-12-14 2020-05-08 东南大学 Assembling type sectional bent cap mounting device and method

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Application publication date: 20130710