CN202520017U - Construction structure of variable cross-section prestress overhanging type folding beam for stand - Google Patents

Construction structure of variable cross-section prestress overhanging type folding beam for stand Download PDF

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Publication number
CN202520017U
CN202520017U CN 201220174560 CN201220174560U CN202520017U CN 202520017 U CN202520017 U CN 202520017U CN 201220174560 CN201220174560 CN 201220174560 CN 201220174560 U CN201220174560 U CN 201220174560U CN 202520017 U CN202520017 U CN 202520017U
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CN
China
Prior art keywords
folding
beams
row
floor
variable
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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.)
Expired - Fee Related
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CN 201220174560
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Chinese (zh)
Inventor
冯云
李呈蔚
王辉
刁晓翔
郭军
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TIANJIN HOUSING GROUP CONSTRUCTION ENGINEERING CONTRACTION Co Ltd
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TIANJIN HOUSING GROUP CONSTRUCTION ENGINEERING CONTRACTION Co Ltd
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Priority to CN 201220174560 priority Critical patent/CN202520017U/en
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Publication of CN202520017U publication Critical patent/CN202520017U/en
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Abstract

The utility model discloses a construction structure of a variable cross-section prestress overhanging type folding beam for a stand. The structure comprises a left row of support columns and a right row of support columns which are arranged on lower layers of floor slabs, wherein a left folding beam is arranged on the top of the left row of support columns; a right folding beam is arranged on the top of the right row of support columns; a plurality of beams are arranged at intervals between the left folding beam and the right folding beam; a stand board and an upper floor slab are connected to the beams; and the left and right folding beams are formed by sequentially connecting an overhanging section, a folding section, a transitional folding section and a straight section which are inclined downwards from the stand side; and corrugated pipes with prestress reinforcements pass through the left and right folding beams. By the structure, steel is saved, structural span is enlarged, the self-weight of the structure is reduced, a use function is improved, and vertical shearing force and principal tensile stress of concrete beams are reduced; and the structure is simple, and is safe and reliable.

Description

A kind of grandstand variable cross-section prestressing force overhanging type folding beam constructing structure
Technical field
The utility model relates to folding beam constructing structure, relates in particular to grandstand variable cross-section prestressing force overhanging type folding beam constructing structure.
Background technology
The prestressed reinforced concrete construction member generally is to form resilient depression through the stretch-draw to presstressed reinforcing steel; The internal pressure that just receives some and be evenly distributed before being come into operation in inherence, concrete cross section is used for part or all offset the stress that forms owing to service load.It can improve the crack of structural element and the performance of distortion, and the compressive stress in this tensile stress and the concrete just in time forms a self-balancing system, makes the stressed more reasonable of concrete structure.But prestressed construction technology is relatively complicated, requires the professional very strong of prestressed structure construction.
Learn the patent of having authorized through retrieval:
1 application number is that the Chinese patent of CN201010187230.5 discloses " prestressed concrete rigid frame cable beam ".It relates to a kind of rigid frame cable beam.The present invention exists because of beam body deadweight excessive (account for floor beam slab gross weight can up to 65%) and is unfavorable for that antidetonation, consumptive material are many, forms problems such as mass concrete construction, the difficult assurance of quality in order to solve existing reinforced concrete beam.It is linear that Suo Liang is bent rope folding, put the beams in place and underbeam laterally arranges, a plurality of columns be set in parallel in put the beams in place and underbeam between, Suo Liang is arranged between upper beam and the underbeam and is tangent with underbeam, Suo Liang is a prestressed member, is provided with prestressing tendon in the Suo Liang; Upper beam, underbeam, Suo Liang and a plurality of column are rigidly connected and form said rigid frame cable beam, between upper beam and underbeam, are formed with a plurality of holes that differ in size.Rigid frame cable beam of the present invention with compare with condition entity beam: beam body deadweight can alleviate 40~50%; Equipment air conditioning pipings etc. can be formed with between upper beam, underbeam and pass through in a plurality of holes that differ in size, and do not take the floor floor height in addition.
2 application numbers are that the Chinese patent of CN201010241142.9 discloses " prestressed concrete mansard rigid-frame beam ".It relates to a kind of rigit-frame beam that is used for the flooring load-bearing.The present invention is unfavorable for antidetonation in order to solve existing wide-flat beam greatly in the deadweight of highrise building central sill body; Take floor height, the problem that indoor energy consumption is increased relatively.Roll over beam down and be a plurality of straight section beams appearance profile that is formed by connecting and be the beam body of minor arc shape; Roll over down that beam is positioned at the below of upper beam and the contour shape of the two formation is bad arc; One end of a flat section beam and first node are rigidly connected and are integral, and an end of another flat section beam and Section Point are rigidly connected and are integral; The column that a plurality of height do not wait is arranged on puts the beams in place and following the folding between the beam, is putting the beams in place and is being formed with a plurality of holes that are used to pass through hydroelectric line and small size air-conditioning caliber that differ in size between the folding beam down; Under roll over and be provided with prestressing tendon in the beam.The present invention be furnished with presstressed reinforcing steel Shu Shiti beam contrast with the condition equal section: concrete material consumption and the deadweight of beam body can reduce and reach 50%, and the plain bars amount reduces and reaches 25%.
3 application numbers are that the Chinese patent of CN201020276866.2 discloses " prestressed concrete mansard rigid-frame beam ", relate to a kind of rigit-frame beam that is used for the flooring load-bearing.The utility model is unfavorable for antidetonation in order to solve existing wide-flat beam greatly in the deadweight of highrise building central sill body; Take floor height, the problem that indoor energy consumption is increased relatively.Roll over beam down and be a plurality of straight section beams appearance profile that is formed by connecting and be the beam body of minor arc shape; Roll over down that beam is positioned at the below of upper beam and the contour shape of the two formation is bad arc; One end of a flat section beam and first node are rigidly connected and are integral, and an end of another flat section beam and Section Point are rigidly connected and are integral; The column that a plurality of height do not wait is arranged on puts the beams in place and following the folding between the beam, is putting the beams in place and is being formed with a plurality of holes that are used to pass through hydroelectric line and small size air-conditioning caliber that differ in size between the folding beam down; Under roll over and be provided with prestressing tendon in the beam.The utility model be furnished with presstressed reinforcing steel Shu Shiti beam contrast with the condition equal section: concrete material consumption and the deadweight of beam body can reduce and reach 50%, and the plain bars amount reduces and reaches 25%.
Though the 1st~3 patent has a series of advantage, is applicable to the building engineering of large span, large space, and there are a plurality of columns to be set in parallel between upper beam and the underbeam, block spectators' sight line as the strong point.And the grandstand in inapplicable stadium, cinema etc.
4 application numbers are that the Chinese patent of CN201020596106.X discloses " the multidirectional steel work that crosses of grandstand "; The multidirectional steel work that crosses of a kind of grandstand; Comprise the Stand Inclined Beams, floor levels beam and the structural column that are intersected in a node each other; And said Stand Inclined Beams and floor levels beam are the steel framework girder construction, and said Stand Inclined Beams and the floor levels beam node that crosses forms firm territory.Through the put more energy into mode in firm territory of setting; Stressed the concentrating of the Vierendeel girder of all directions junction is delivered to the firm territory that the steel column end forms; Through the be delivered to structural column of firm territory with reasonable stress, this make has also avoided in post, being provided with too much stiffening rib simultaneously, with the position extension of field Welding again; The firm territory of node area can be accomplished in factory process, and quality is able to guarantee; The design of node not only makes complicated junction beam power transmission route make clear; Reached the requirement of " the weak member of strong node " again; The purpose that possesses the good resistance shock stability; This application is Stand Inclined Beams, floor levels beam and structural column, and said Stand Inclined Beams and floor levels beam are the steel framework girder construction.
5 application numbers are that 02154109.4 Chinese patent discloses the job practices of the declined beam of encorbelmenting " Y shape pillar with ", belong to building beam column job practices, especially have the job practices of the building beam column of the declined beam of encorbelmenting.The present invention has adopted segmentation to unite the method for construction; Be about to Y shape pillar and be divided into several sections with the declined beam of encorbelmenting; Every section is adjacent floor, beam, post and other the concrete structure gang while casting and constructing that connects; They are connected as one mutually, resist axial compression and horizontal thrust that the declined beam deadweight produces jointly; Support system is to adopt bowl fastening type multifunction scaffold and common fastener scaffold to cooperate the scaffold joint system of forming; The distich hand frame system that fits carries out carrying out concrete pouring again behind the bearing test.Method of the present invention has solved declined beam deadweight column and the axial compression of side column and the difficult problem of horizontal thrust, has guaranteed that being perfectly safe of construction is reliable, is applicable to the construction of the large-scale treatment of the earth with encorbelment declined beam and Y type column.This patent floor, beam, post and other concrete structure gang be casting and constructing simultaneously, is not suitable for the construction of the grandstand variable cross-section prestressing force overhanging type folding beam of stadium, cinema etc.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of prior art; Provide a kind of and practice thrift steel, increase structural span, reduce dead load, improve function of use, reduce the vertical shear and the principal tensile stress of concrete beam; A kind of grandstand variable cross-section prestressing force overhanging type folding beam constructing structure simple in structure, safe and reliable.
A kind of grandstand variable cross-section prestressing force overhanging type folding beam constructing structure of the utility model; It comprises the left and right row's pillar that is installed on lower floor's floor; In described left bank post top portion left side folding beam is installed; In described right row's post top portion right folding beam is installed, between described left and right folding beam, at interval many beams is installed, on described beam, be connected with and see platen and upper strata floor; Described left and right folding beam connects and composes by being inclined cross the downward section of encorbelmenting, broken line, transition broken line, flat segments from the grandstand side successively, in described left and right folding beam, is installed with the bellows of prestressed reinforcement.
Adopt this structure to practice thrift steel, increase structural span, reduce dead load, improve function of use, reduce the vertical shear and the principal tensile stress of concrete beam, simple in structure, safe and reliable.This structure is not provided with column in the downward section of encorbelmenting that is inclined cross of left and right folding beam, has avoided that the spectators under the grandstand are unsighted to be hindered; The left and right folding beam of this method is along with the grandstand shape is broken line type; Connect and compose by being inclined cross the downward section of encorbelmenting, broken line, transition broken line, flat segments successively; Thereby the beam section geomery that makes left and right folding beam change also optimum carrying out constitute an integral body the space coincide, increase structural span, reduce dead load; This structure is because left and right folding beam adopts post stretching bonded prestress job practices to construct; And the steel strand of the stretch-draw in bellows and described corrugated tube trend all is the broken line type variation with prestressing force folding beam; So, improved the structural safety intensity of the left and right folding beam of the weak part section of encorbelmenting especially greatly from job practices and the linear structural strength that has guaranteed whole left and right folding beam of folding beam.
Description of drawings
Fig. 1 is the variable cross-section prestressing force overhanging type folding beam elevation of a kind of grandstand variable cross-section prestressing force overhanging type folding beam constructing structure of the utility model;
The beam section that Fig. 2-1,2-2,2-3,2-4 are respectively a kind of grandstand variable cross-section prestressing force overhanging type folding beam constructing structure of the utility model divides flat segments, transition broken line, broken line, the section of the encorbelmenting cross sectional representation that changes for four times;
Fig. 3 is the elevation of a kind of grandstand variable cross-section prestressing force overhanging type folding beam constructing structure in whole building of the utility model;
Fig. 4 is the 3 dimensional drawing that the variable cross-section prestressing force overhanging type of a kind of grandstand variable cross-section prestressing force overhanging type folding beam constructing structure of the utility model is rolled over beam and grandstand beam slab.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done to describe in detail.
A kind of grandstand variable cross-section prestressing force overhanging type folding beam constructing structure of the utility model shown in accompanying drawing; It comprises the left and right row's pillar that is installed on lower floor's floor; In described left bank post top portion left side folding beam is installed; In described right row's post top portion right folding beam is installed, between described left and right folding beam, at interval many beams is installed, on described beam, be connected with and see platen and upper strata floor; Described left and right folding beam connects and composes by being inclined cross the downward section of encorbelmenting, broken line, transition broken line, flat segments from the grandstand side successively, in described left and right folding beam, is installed with the bellows of prestressed reinforcement.
Preferably the left pillar at the section tail place that is positioned at flat segments is equipped with a plurality of reinforced mesh in the interval with left intersection and the right pillar at the section tail place that is positioned at flat segments of rolling over beam respectively with right intersection of rolling over beam.This structure makes the section tail place of left and right folding beam 1 flat segments pass through reinforced mesh folding beam 1, pillar 4-2, and many beam 3-1, upper strata floor 3 integral body connect into an individual system, have strengthened the structural safety intensity of folding beam greatly.
The job practices of this structure for (1) on the post muscle that lower floor's floor 6 gets rid of in advance at interval the pillar reinforcing bar of a plurality of pillar of colligation 4,4-1,4-2 form left bank, right row's pillar reinforcing bar, the pillar reinforcing bar of the first pillar 4-1 that wherein is positioned at the avris of grandstand side is positioned at the transition broken line place of the template of folding beam 1 to be installed; (2) install column template at each pillar reinforcing bar place, concreting forms left and right row's pillar in a plurality of column templates of left and right row then; (3) install the soffit formwork of left side folding beam and the soffit formwork of right folding beam respectively at described left bank pillar and right row's pillar 4,4-1,4-2 top; (4) plain bars and the bellows 5 that is installed with prestressed reinforcement are installed respectively on described left and right folding beam 1 soffit formwork; Described prestressed reinforcement is a prestress steel hinge bundle; Described plain bars is broken line type with the bellows 5 that is installed with prestressed reinforcement, and described plain bars and the bellows 5 that is installed with prestressed reinforcement connect and compose by being inclined cross the downward section of encorbelmenting, broken line, transition broken line, flat segments from seeing platen 2 sides successively.(5) side template of left and right folding beam 1 is installed, the beam forms of many beam 3-1 is installed between the side template of described left and right folding beam at interval, on described beam forms, install the template of seeing platen 2 with the template of seeing the upper strata floor 3 that platen links to each other; (6) colligation beam muscle and seeing colligation links to each other with the beam muscle in the template of platen 2 the plate muscle of seeing platen 2 and the plate muscle of the upper strata floor 3 that colligation links to each other with the beam muscle in the template of upper strata floor 3 in the beam forms of every beam 3-1; (7) in the template of left and right folding beam 1, in the beam forms of many beam 3-1, see in the template of platen 2 and integrated poured concrete in the template of upper strata floor 3; (8) after the concrete of left and right folding Liang1Chu to be cast reaches requirement of strength, the prestressed reinforcement that is through in the bellows 5 is carried out stretch-draw, then corrugated conduit is in the milk and the closure grouting hole.D-D among Fig. 1 and 2 is that the cross-sectional structure of the section of encorbelmenting, the cross-sectional structure that C-C is broken line, cross-sectional structure, the A-A that B-B is the transition broken line are the cross-sectional structure of flat segments.

Claims (2)

1. a grandstand variable cross-section prestressing force overhanging type is rolled over the beam constructing structure; It is characterized in that: it comprises the left and right row's pillar that is installed on lower floor's floor; In described left bank post top portion left side folding beam is installed; In described right row's post top portion right folding beam is installed, between described left and right folding beam, at interval many beams is installed, on described beam, be connected with and see platen and upper strata floor; Described left and right folding beam connects and composes by being inclined cross the downward section of encorbelmenting, broken line, transition broken line, flat segments from the grandstand side successively, in described left and right folding beam, is installed with the bellows of prestressed reinforcement.
2. grandstand variable cross-section prestressing force overhanging type folding beam constructing structure according to claim 1 is characterized in that: left pillar and left intersection and the right pillar at the section tail place that is positioned at flat segments of rolling over beam at the section tail place that is positioned at flat segments are equipped with a plurality of reinforced mesh in the interval respectively with right intersection of rolling over beam.
CN 201220174560 2012-04-20 2012-04-20 Construction structure of variable cross-section prestress overhanging type folding beam for stand Expired - Fee Related CN202520017U (en)

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CN 201220174560 CN202520017U (en) 2012-04-20 2012-04-20 Construction structure of variable cross-section prestress overhanging type folding beam for stand

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Application Number Priority Date Filing Date Title
CN 201220174560 CN202520017U (en) 2012-04-20 2012-04-20 Construction structure of variable cross-section prestress overhanging type folding beam for stand

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104295001A (en) * 2014-08-25 2015-01-21 浙江省一建建设集团有限公司 Variable cross-section pre-stress cant beam and construction process thereof
CN105298126A (en) * 2015-10-23 2016-02-03 中冶东北建设(沈阳)工程技术有限公司 Method for high-formwork construction of large-diameter oval oblique-cone structure
CN109537800A (en) * 2018-11-30 2019-03-29 中国建筑第八工程局有限公司 Super-span overhangs prestressed arc-shape steel beam structure and its construction method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104295001A (en) * 2014-08-25 2015-01-21 浙江省一建建设集团有限公司 Variable cross-section pre-stress cant beam and construction process thereof
CN104295001B (en) * 2014-08-25 2016-04-27 浙江省一建建设集团有限公司 The construction technology of variable cross-section prestressing force cant beam
CN105298126A (en) * 2015-10-23 2016-02-03 中冶东北建设(沈阳)工程技术有限公司 Method for high-formwork construction of large-diameter oval oblique-cone structure
CN109537800A (en) * 2018-11-30 2019-03-29 中国建筑第八工程局有限公司 Super-span overhangs prestressed arc-shape steel beam structure and its construction method

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Granted publication date: 20121107

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