CN103470040A - Splicing method of composite floor slab and beam - Google Patents

Splicing method of composite floor slab and beam Download PDF

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Publication number
CN103470040A
CN103470040A CN2013104218044A CN201310421804A CN103470040A CN 103470040 A CN103470040 A CN 103470040A CN 2013104218044 A CN2013104218044 A CN 2013104218044A CN 201310421804 A CN201310421804 A CN 201310421804A CN 103470040 A CN103470040 A CN 103470040A
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slab
precast plate
reinforcement
prefabricated
reinforcements
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叶燕华
张诗浩
孙锐
薛洲海
宋妍
陈浩
李炎
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Nanjing Tech University
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Nanjing Tech University
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Abstract

本发明公开了一种叠合楼板与梁的拼接方法,包括预制板、梁、梁下部纵筋、梁中部纵筋、梁上部纵筋、板底钢筋、板顶附加钢筋、桁架钢筋及箍筋。梁分两次浇筑,首次浇筑高度为梁高与板厚的差值,此次浇筑时,梁中只进行梁下部纵筋、梁中部纵筋及箍筋的绑扎。待现浇混凝土达到一定强度时进行预制板吊装,板边搁置于梁边且板底钢筋伸入梁中,最后加梁上部纵筋及板顶附加钢筋,再次现浇混凝土,完成梁与板的施工。本发明描述的方法使板边缘钢筋能够正确地锚固到梁中,满足国家现行规范的要求,施工简单,受力合理。

The invention discloses a splicing method of laminated floor slabs and beams, comprising prefabricated slabs, beams, beam lower longitudinal reinforcements, beam middle longitudinal reinforcements, beam upper longitudinal reinforcements, slab bottom reinforcements, slab top additional reinforcements, truss reinforcements and stirrups . The beam is poured twice, and the first pouring height is the difference between the beam height and the slab thickness. During this pouring, only the longitudinal reinforcement at the lower part of the beam, the longitudinal reinforcement at the middle part of the beam and the stirrup are bound in the beam. When the cast-in-place concrete reaches a certain strength, the prefabricated slab is hoisted, the slab edge is placed on the beam side and the steel bar at the bottom of the slab extends into the beam. Finally, the upper longitudinal reinforcement of the beam and the additional steel bar at the top of the slab are added, and the concrete is poured again to complete the integration of the beam and the slab. construction. The method described in the invention enables the steel bars at the edge of the slab to be correctly anchored into the beams, meets the requirements of current national norms, and has simple construction and reasonable stress.

Description

一种叠合楼板与梁的拼接方法A splicing method of superimposed floor slabs and beams

技术领域technical field

本发明涉及一种预制装配式混凝土叠合楼板与梁的拼接方法,属于建筑工程中预制装配式结构施工领域。The invention relates to a method for splicing prefabricated assembled concrete laminated floors and beams, and belongs to the construction field of prefabricated assembled structures in construction engineering.

背景技术Background technique

为了推进建筑工业化的发展,近年来国家大力提倡预制装配式建筑。叠合楼板作为该结构体系中的重要结构构件,有着很高的工业化程度。叠合楼板由预制部分与现浇部分叠合而成,它同时具备预制装配式工业化程度高及全现浇结构整体性好的特点。其中预制部分在工厂生产,有着固定的生产模式。现场施工时预制板不仅是结构的一部分,同时充当模板,省去支模工序。最后在预制板上现浇混凝土,由于预制板表面粗糙,且有桁架钢筋伸出预制部分,能够充分保证叠合面之间的粘结。叠合楼板最显著的优点是该结构施工工序简单、快捷,可以优先缩短工期。这些突出的优点使叠合楼板得以广泛使用,另外叠合楼板还可以独立于预制装配式结构体系,作为一种构件应用于钢结构及全现浇混凝土结构中。In order to promote the development of construction industrialization, the state has vigorously advocated prefabricated buildings in recent years. As an important structural component in the structural system, the laminated floor slab has a high degree of industrialization. The laminated slab is composed of prefabricated parts and cast-in-place parts. It has the characteristics of high industrialization of prefabricated assembly and good integrity of cast-in-place structures. Among them, the prefabricated part is produced in the factory and has a fixed production mode. During on-site construction, the prefabricated panel is not only a part of the structure, but also acts as a formwork, eliminating the need for formwork. Finally, cast-in-place concrete is placed on the prefabricated slab. Due to the rough surface of the prefabricated slab and the truss reinforcement protruding from the prefabricated part, the bonding between the superimposed surfaces can be fully guaranteed. The most significant advantage of laminated floor slabs is that the construction process of the structure is simple and fast, and the construction period can be shortened first. These outstanding advantages make the laminated floor slab widely used. In addition, the laminated floor slab can be independent of the prefabricated structural system and used as a component in steel structures and all-in-situ concrete structures.

在叠合楼板的应用过程中也出现了一些困难,尤其显现在楼板与梁的拼接节点处。梁钢筋绑扎完成且工程预制部分生产完成后进行现场吊装时,预制板板边伸出的钢筋不能穿过梁的纵向钢筋到达梁中进行锚固。现有解决方案是将板边伸出的钢筋向上弯折,从梁的纵向钢筋上越过与梁的箍筋位于同一高度。这种做法不能满足国家规范中的构造要求,节点处受力不合理。更为合理的做法应该是使预制部分边缘伸出的钢筋位于梁上部纵筋的下方且满足锚固要求。There are also some difficulties in the application of laminated slabs, especially at the splicing joints between slabs and beams. When the beam reinforcement binding is completed and the prefabricated part of the project is hoisted on site after the production is completed, the reinforcement protruding from the edge of the prefabricated slab cannot pass through the longitudinal reinforcement of the beam to reach the beam for anchoring. The existing solution is to bend the steel bars protruding from the edge of the plate upwards, and cross over the longitudinal steel bars of the beam to be at the same height as the stirrups of the beam. This approach cannot meet the structural requirements in the national code, and the force at the nodes is unreasonable. A more reasonable approach should be to make the reinforcement protruding from the edge of the prefabricated part be located under the upper longitudinal reinforcement of the beam and meet the anchorage requirements.

发明内容Contents of the invention

本发明提供一种叠合楼板与梁的拼接方法,其目的是在不改变预制板的工厂生产流程的前提下使板边缘伸出的钢筋能够满足锚固要求。The invention provides a splicing method of laminated floor slabs and beams, the purpose of which is to make the steel bars protruding from the edges of the slabs meet the anchoring requirements without changing the factory production process of the prefabricated slabs.

本发明采用的技术方案为:一种叠合楼板与梁的拼接方法,包括以下步骤:The technical solution adopted in the present invention is: a splicing method of a superimposed floor slab and a beam, comprising the following steps:

1)将梁分两次浇筑,首次浇筑高度为梁高与板厚的差值:此次浇筑时,梁中先只进行梁下部纵筋、梁中部纵筋及箍筋的绑扎,然后梁支模,模板高度为梁高与板厚的差值,最后浇筑混凝土;1) The beam is poured twice, and the first pouring height is the difference between the beam height and the slab thickness: during this pouring, only the longitudinal reinforcement at the lower part of the beam, the longitudinal reinforcement at the middle of the beam and the stirrup are bound first in the beam, and then the beam is supported and the height of the formwork is is the difference between beam height and slab thickness, and concrete is poured at last;

2)工厂制作预制板,该步骤可以提前进行,预制板由板底钢筋、桁架钢筋及混凝土组成,板底钢筋伸出预制板部分应满足强度所需的锚固长度;2) The factory makes prefabricated slabs. This step can be carried out in advance. The prefabricated slab is composed of slab bottom reinforcement, truss reinforcement and concrete. The part of the slab bottom reinforcement protruding from the prefabricated slab should meet the anchorage length required for strength;

3)待步骤1)中现浇混凝土达到一定强度时进行预制板吊装,预制板边搁置于梁边,预制板边缘的板底钢筋伸入梁中,并且置于梁上部纵筋以下,然后添加梁上部纵筋及预制板的板顶附加钢筋,再次将梁和预制板同时现浇混凝土,完成梁与预制板的施工。3) When the cast-in-place concrete in step 1) reaches a certain strength, the precast slab is hoisted. The edge of the precast slab is placed on the edge of the beam. The longitudinal reinforcement on the upper part of the beam and the additional reinforcement on the top of the prefabricated slab, and the beam and the prefabricated slab are poured with concrete at the same time to complete the construction of the beam and the prefabricated slab.

本发明的有益效果:本发明使板边缘钢筋能够正确地锚固到梁中,满足国家现行规范的要求,施工简单,受力合理。Beneficial effects of the invention: the invention enables the steel bars at the edge of the slab to be correctly anchored into the beams, meets the requirements of the current national norms, and has simple construction and reasonable stress.

附图说明Description of drawings

图1为发明中梁一边与预制板拼接断面图。Fig. 1 is the splicing section view of one side of the central beam of the invention and the prefabricated slab.

图2为发明中梁两边与预制板拼接断面图。Fig. 2 is the sectional view of splicing the two sides of the middle beam of the invention and the prefabricated slab.

具体实施方式Detailed ways

下面结合附图和具体实施方式对本发明做进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

如图1与图2所示,预制板在工厂预制,由板底钢筋6、桁架钢筋8及混凝土组成,其中桁架钢筋8可以对楼板厚度进行控制。预制板在现场可以充当模板,省去支模工序。As shown in Figure 1 and Figure 2, the prefabricated slab is prefabricated in the factory and consists of slab bottom reinforcement 6, truss reinforcement 8 and concrete, among which the truss reinforcement 8 can control the thickness of the floor slab. The prefabricated panels can act as templates on site, eliminating the need for formwork.

现场施工时首先绑扎梁2内钢筋,注意首次浇筑时只绑扎梁下部纵筋3、梁中部纵筋4及箍筋9。梁支模时支模高度不得高于梁高与板厚差值,支模完成后浇筑混凝土,完成梁2首次浇筑部分10。待梁2中混凝土达到一定强度时吊装预制板1,此刻预制板1已经在工厂预制完成。吊装时预制板1边缘板底钢筋6置于梁上部纵筋5以下,且满足必要的锚固长度,吊装完成后添加梁上部纵筋5及其板顶附加钢筋7,第二次浇筑混凝土,混凝土浇筑高度到板顶。During on-site construction, first bind the steel bars inside the beam 2, and pay attention to only binding the longitudinal bars 3 at the lower part of the beam, the longitudinal bars 4 at the middle of the beam and the stirrup bars 9 during the first pouring. The height of the formwork should not be higher than the difference between the beam height and the plate thickness when the beam formwork is supported. After the formwork is completed, the concrete is poured, and the first pouring part 10 of the beam 2 is completed. When the concrete in the beam 2 reaches a certain strength, the prefabricated slab 1 is hoisted. At this moment, the prefabricated slab 1 has been prefabricated in the factory. During hoisting, the prefabricated slab 1 edge slab bottom reinforcement 6 is placed below the upper longitudinal reinforcement 5 of the beam, and the necessary anchorage length is met. After the hoisting is completed, the upper longitudinal reinforcement 5 of the beam and the additional reinforcement 7 at the top of the slab are added, and the concrete is poured for the second time. Pouring height to the top of the slab.

应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。本实施例中未明确的各组成部分均可用现有技术加以实现。It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. All components that are not specified in this embodiment can be realized by existing technologies.

Claims (1)

1. the joining method of a laminated floor slab and beam is characterized in that: comprise the following steps:
1) beam is built at twice, build first is highly the difference of deck-molding and thickness of slab: when this is built, Liang Zhongxian only carries out the colligation of the vertical muscle in beam bottom, the vertical muscle in beam middle part and stirrup, then beam formwork, the difference that the template height is deck-molding and thickness of slab, last concreting;
2) produce in factory precast plate, this step can be carried out in advance, and precast plate is comprised of reinforcement, truss bars and concrete, and reinforcement stretches out the precast plate part should meet the required anchorage length of intensity;
Carry out the precast plate lifting when 3) cast-in-situ concrete reaches some strength in step 1), prefabricated edges of boards are held on the beam limit, the reinforcement at precast plate edge stretches in beam, and be placed in below the beam upper longitudinal bar, then add the plate top additional bar of beam upper longitudinal bar and precast plate, again, by beam and precast plate cast-in-situ concrete simultaneously, complete the construction of beam and precast plate.
CN2013104218044A 2013-09-16 2013-09-16 Splicing method of composite floor slab and beam Pending CN103470040A (en)

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Cited By (12)

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Publication number Priority date Publication date Assignee Title
CN104074359A (en) * 2014-07-17 2014-10-01 长沙远大住宅工业集团有限公司 Construction method for connection joint of prefabricated sandwich side fascia
CN107119839A (en) * 2017-06-27 2017-09-01 唐元元 Assembled Building panel and preparation method thereof
CN107605086A (en) * 2017-11-10 2018-01-19 远大住宅工业(天津)有限公司 Special-shaped complete prefabricated inclined roof and its with the attachment structure of Cast-in-situ Beam, construction method
CN107859178A (en) * 2017-11-10 2018-03-30 湘潭远大住宅工业有限公司 The attachment structure and its construction method of complete prefabricated inclined roof and Cast-in-situ Beam
CN107975185A (en) * 2017-12-01 2018-05-01 沈阳建筑大学 Concealed beam formula connects full precast concrete harden structure, making and assembly method
CN109826350A (en) * 2019-02-28 2019-05-31 山东城开远大装配式建筑有限公司 A kind of connection method of laminated floor slab
CN110318490A (en) * 2019-07-18 2019-10-11 杭州建工集团有限责任公司 A kind of construction method that superimposed sheet is connect with secondary beam and node connecting structure
CN110512783A (en) * 2019-03-19 2019-11-29 浙江绿城建筑设计有限公司 The building cover structure being made of cast-in-place concrete Vierendeel girder and reinforced concrete slab
CN110644681A (en) * 2019-09-25 2020-01-03 上海建工四建集团有限公司 Stirrup positioning device and method
CN111058562A (en) * 2019-12-31 2020-04-24 浙江工业大学 A superimposed floor structure and its construction technology
CN115288446A (en) * 2022-07-08 2022-11-04 中国建筑第二工程局有限公司 Construction method for prefabricated half cage beam steel bars of floor of assembly structure
CN115478646A (en) * 2022-10-12 2022-12-16 中建八局第二建设有限公司 Construction method and structure of precast concrete composite floor slab

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CN102912900A (en) * 2012-11-14 2013-02-06 安徽华力建设集团有限公司 Prefabricated assembled superposed plate type concrete shear wall and construction method thereof
CN103061518A (en) * 2013-01-22 2013-04-24 中国十七冶集团有限公司 Method for constructing composite floor slabs of multi-storey residential building

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CN101586366A (en) * 2008-05-21 2009-11-25 万科企业股份有限公司 Connecting structure and construction method of precast concrete plates and beams, and building comprising same
CN102912900A (en) * 2012-11-14 2013-02-06 安徽华力建设集团有限公司 Prefabricated assembled superposed plate type concrete shear wall and construction method thereof
CN103061518A (en) * 2013-01-22 2013-04-24 中国十七冶集团有限公司 Method for constructing composite floor slabs of multi-storey residential building

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074359A (en) * 2014-07-17 2014-10-01 长沙远大住宅工业集团有限公司 Construction method for connection joint of prefabricated sandwich side fascia
CN107119839A (en) * 2017-06-27 2017-09-01 唐元元 Assembled Building panel and preparation method thereof
CN107605086A (en) * 2017-11-10 2018-01-19 远大住宅工业(天津)有限公司 Special-shaped complete prefabricated inclined roof and its with the attachment structure of Cast-in-situ Beam, construction method
CN107859178A (en) * 2017-11-10 2018-03-30 湘潭远大住宅工业有限公司 The attachment structure and its construction method of complete prefabricated inclined roof and Cast-in-situ Beam
CN107605086B (en) * 2017-11-10 2023-11-28 远大住宅工业(天津)有限公司 Special-shaped full-prefabricated sloping roof, connection structure of special-shaped full-prefabricated sloping roof and cast-in-situ beam and construction method of special-shaped full-prefabricated sloping roof
CN107975185A (en) * 2017-12-01 2018-05-01 沈阳建筑大学 Concealed beam formula connects full precast concrete harden structure, making and assembly method
CN109826350A (en) * 2019-02-28 2019-05-31 山东城开远大装配式建筑有限公司 A kind of connection method of laminated floor slab
CN110512783B (en) * 2019-03-19 2020-09-08 浙江绿城建筑设计有限公司 Floor structure composed of cast-in-place concrete frame beam and concrete composite floor slab
CN110512783A (en) * 2019-03-19 2019-11-29 浙江绿城建筑设计有限公司 The building cover structure being made of cast-in-place concrete Vierendeel girder and reinforced concrete slab
CN110318490A (en) * 2019-07-18 2019-10-11 杭州建工集团有限责任公司 A kind of construction method that superimposed sheet is connect with secondary beam and node connecting structure
CN110644681A (en) * 2019-09-25 2020-01-03 上海建工四建集团有限公司 Stirrup positioning device and method
CN111058562A (en) * 2019-12-31 2020-04-24 浙江工业大学 A superimposed floor structure and its construction technology
CN115288446A (en) * 2022-07-08 2022-11-04 中国建筑第二工程局有限公司 Construction method for prefabricated half cage beam steel bars of floor of assembly structure
CN115288446B (en) * 2022-07-08 2024-01-26 中国建筑第二工程局有限公司 Construction method for prefabricated half-cage beam steel bars of building surface with assembly structure
CN115478646A (en) * 2022-10-12 2022-12-16 中建八局第二建设有限公司 Construction method and structure of precast concrete composite floor slab

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