CN103541478B - Lattice superposed beam and plate and construction method thereof - Google Patents

Lattice superposed beam and plate and construction method thereof Download PDF

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CN103541478B
CN103541478B CN201310437206.6A CN201310437206A CN103541478B CN 103541478 B CN103541478 B CN 103541478B CN 201310437206 A CN201310437206 A CN 201310437206A CN 103541478 B CN103541478 B CN 103541478B
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张延年
汪青杰
孙平
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Shenyang Ganghua Construction Group Co Ltd
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Shenyang Jianzhu University
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Abstract

本项发明是一种格构式叠合梁与板,主要由混凝土边壳、混凝土中肋、混凝土横肋、混凝土底壳、预制叠合楼板、楼板搭接肋和后浇混凝土层等组成。两侧混凝土边壳中间为混凝土中肋,混凝土横肋等间距沿全梁均匀布置,混凝土边壳和混凝土横肋的高度相等,混凝土中肋的高度为混凝土边壳高度的三分之二;预制叠合楼板为工字型,两端分别有两个楼板搭接肋,预制叠合楼板的端部至混凝土边壳的外侧边缘。本发明的效果和优点是承载力高、施工方便、施工速度快、经济效果好等特点。运输方便,运输过程中不易损坏,施工过程中避免穿筋,缩短工时,降低造价。

The invention is a lattice-type composite beam and slab, which is mainly composed of concrete side shells, concrete middle ribs, concrete transverse ribs, concrete bottom shells, prefabricated composite floors, floor lap ribs and post-cast concrete layers. In the middle of the concrete side shells on both sides is the concrete middle rib, and the concrete transverse ribs are evenly arranged along the whole beam at equal intervals. The laminated floor slab is I-shaped, with two floor lap ribs at both ends, and the end of the prefabricated laminated floor slab reaches the outer edge of the concrete side shell. The effects and advantages of the invention are high bearing capacity, convenient construction, fast construction speed, good economic effect and the like. It is easy to transport, not easy to be damaged during transportation, avoids wearing ribs during construction, shortens working hours, and reduces construction costs.

Description

格构式叠合梁与板及其施工方法Lattice Composite Beam and Slab and Its Construction Method

技术领域 technical field

本发明涉及一种建筑结构新型混凝土叠合梁与板,特别是涉及一种装配式混凝土结构的格构式叠合梁与板及其施工方法。 The invention relates to a novel concrete composite beam and slab of a building structure, in particular to a lattice-type composite beam and slab of an assembled concrete structure and a construction method thereof.

背景技术 Background technique

装配式混凝土建筑是指以工厂化生产的混凝土预制构件为主。通过现场装配的方式设计建造的混凝土结构类房屋建筑。构件的装配方法一般有现场后浇叠合层混凝土、钢筋锚固后浇混凝土连接等,钢筋连接可采用套筒灌浆连接、焊接、机械连接及预留孔洞搭接连接等做法。20世纪80年代,在我国流行的装配式预制大板住宅,由于结构整体性差、渗漏、楼板裂缝等原因,存在许多影响结构安全及正常使用的隐患和缺陷,逐渐被现浇混凝土结构所取代。但随着当前新兴的装配式混凝土结构的应用,特别是近年来引进了许多国外先进技术,本土化的装配式混凝土结构建造新技术正逐步形成。 Prefabricated concrete buildings refer to factory-produced concrete prefabricated components. Concrete structure housing buildings designed and constructed through on-site assembly. The assembly methods of components generally include on-site post-casting laminated layer concrete, steel bar anchoring and post-casting concrete connection, etc. The steel bar connection can be connected by sleeve grouting connection, welding, mechanical connection and lap connection of reserved holes. In the 1980s, prefabricated prefabricated large-slab houses, which were popular in my country, had many hidden dangers and defects that affected structural safety and normal use due to poor structural integrity, leakage, and floor cracks, and were gradually replaced by cast-in-place concrete structures. . However, with the current emerging application of prefabricated concrete structures, especially the introduction of many foreign advanced technologies in recent years, localized new technologies for the construction of prefabricated concrete structures are gradually forming.

随着我国“建筑工业化、住宅产业化”进程的加快,以及中国“人口红利”的不断减少,建筑行业用工荒的出现,住宅工业产业化的趋势日渐明显。装配式混凝土结构的应用重新成为当前研究热点,全国各地不断涌现出住宅建筑装配式混凝土结构的新技术、新形式。装配式钢筋混凝土结构是我国建筑结构发展的重要方向之一,它有利于我国建筑工业化的发展,提高生产效率节约能源,发展绿色环保建筑,并且有利于提高和保证建筑工程质量。与现浇施工工法相比,装配式RC结构有利于绿色施工,因为装配式施工更能符合绿色施工的节地、节能、节材、节水和环境保护等要求,降低对环境的负面影响,包括降低噪音、防止扬尘、减少环境污染、清洁运输、减少场地干扰、节约水、电、材料等资源和能源,遵循可持续发展的原则。而且,装配式结构可以连续地按顺序完成工程的多个或全部工序,从而减少进场的工程机械种类和数量,消除工序衔接的停闲时间,实现立体交叉作业,减少施工人员,从而提高工效、降低物料消耗、减少环境污染,为绿色施工提供保障。另外,装配式结构在较大程度上减少建筑垃圾(约占城市垃圾总量的30%―40%),如废钢筋、废铁丝、废竹木材、废弃混凝土等。 With the acceleration of the process of "construction industrialization and housing industrialization" in China, and the continuous reduction of China's "demographic dividend", the labor shortage in the construction industry has emerged, and the trend of housing industrialization has become increasingly obvious. The application of prefabricated concrete structures has become a current research hotspot again, and new technologies and new forms of prefabricated concrete structures for residential buildings are emerging all over the country. Prefabricated reinforced concrete structure is one of the important directions for the development of my country's building structure. It is conducive to the development of my country's building industrialization, improving production efficiency and saving energy, developing green and environmentally friendly buildings, and is conducive to improving and ensuring the quality of construction projects. Compared with the cast-in-place construction method, the prefabricated RC structure is conducive to green construction, because the prefabricated construction can better meet the requirements of green construction, such as land saving, energy saving, material saving, water saving and environmental protection, and reduce the negative impact on the environment. Including reducing noise, preventing dust, reducing environmental pollution, clean transportation, reducing site disturbance, saving water, electricity, materials and other resources and energy, and following the principles of sustainable development. Moreover, the prefabricated structure can continuously complete multiple or all processes of the project in sequence, thereby reducing the types and quantities of construction machinery entering the site, eliminating the idle time between process connections, realizing three-dimensional cross operations, reducing construction personnel, and improving work efficiency , Reduce material consumption, reduce environmental pollution, and provide guarantee for green construction. In addition, the prefabricated structure can reduce construction waste to a large extent (accounting for about 30%-40% of the total urban waste), such as waste steel bars, waste iron wires, waste bamboo wood, waste concrete, etc.

装配式混凝土建筑依据装配化程度高低可分为全装配和部分装配两大类。全装配建筑一般限制为低层或抗震设防要求较低的多层建筑;部分装配混凝土建筑主要构件一般采用预制构件、在现场通过现浇混凝土连接,形成装配整体式结构的建筑。 Prefabricated concrete buildings can be divided into two categories: full assembly and partial assembly according to the degree of assembly. Fully assembled buildings are generally limited to low-rise or multi-storey buildings with low seismic fortification requirements; the main components of partially assembled concrete buildings are generally prefabricated components, which are connected by cast-in-place concrete on site to form a building with an assembled monolithic structure.

北美地区主要以美国和加拿大为主。由于预制/预应力混凝土协会(PCI)长期研究与推广预制建筑,预制混凝土的相关标准规范也很完善。所以其装配式混凝土建筑应用非常普遍。北美的预制建筑主要包括建筑预制外墙和结构预制构件两大系列,预制构件的共同特点是大型化和预应力相结合。可优化结构配筋和连接构造。减少制作和安装工作量,缩短旖工工期,充分体现工业化、标准化和技术经济性特征。在20世纪,北美的预制建筑主要用于低层非抗震设防地区。由于加州地区的地震影响,近年来非常重视抗震和中高层预制结构的工程应用技术研究。PCI最近出版了《预制混凝土结构抗震设计》一书,从理论和实践角度系统地分析了预制建筑的抗震设计问题,总结了许多预制结构抗震设计的最新科研成果,对指导预制结构设计和工程应用推广具有很强的指导意义。 North America is mainly dominated by the United States and Canada. Due to the long-term research and promotion of prefabricated buildings by the Precast/Prestressed Concrete Association (PCI), the relevant standards and specifications for precast concrete are also very complete. Therefore, its prefabricated concrete building application is very common. Prefabricated buildings in North America mainly include two series of building prefabricated exterior walls and structural prefabricated components. The common feature of prefabricated components is the combination of large-scale and prestress. Structural reinforcement and connection construction can be optimized. Reduce the workload of production and installation, shorten the construction period, and fully reflect the characteristics of industrialization, standardization and technical economy. In the 20th century, prefabricated buildings in North America were mainly used in low-rise non-seismic fortified areas. Due to the impact of earthquakes in the California area, in recent years, great attention has been paid to the research on engineering application technology of earthquake resistance and mid-high-rise prefabricated structures. PCI recently published the book "Seismic Design of Prefabricated Concrete Structures", which systematically analyzes the seismic design of prefabricated buildings from the perspective of theory and practice, and summarizes the latest scientific research achievements in the seismic design of prefabricated structures. Promotion has a strong guiding significance.

欧洲是预制建筑的发源地,早在17世纪就开始了建筑工业化之路。第二次世界大战后,由于劳动力资源短缺,欧洲更进一步研究探索建筑工业化模式。无论是经济发达的北欧、西欧,还是经济欠发达的东欧,一直都在积极推行预制装配混凝土建筑的设计施工方式。积累了许多预制建筑的设计施工经验,形成了各种专用预制建筑体系和标准化的通用预制产品系列,并编制了一系列预制混凝土工程标准和应用手册,对推动预制混凝土在全世界的应用起到了非常重要的作用。 Europe is the birthplace of prefabricated buildings, and the road to industrialization of buildings began as early as the 17th century. After the Second World War, due to the shortage of labor resources, Europe further studied and explored the industrialization model of construction. Whether it is economically developed Northern Europe, Western Europe, or economically underdeveloped Eastern Europe, they have been actively promoting the design and construction of prefabricated concrete buildings. Accumulated a lot of experience in the design and construction of prefabricated buildings, formed various special prefabricated building systems and standardized general prefabricated product series, and compiled a series of precast concrete engineering standards and application manuals, which played a role in promoting the application of precast concrete in the world very important role.

日本和韩国借鉴了欧美的成功经验,在探索预制建筑的标准化设计施工基础上。结合自身要求。在预制结构体系整体性抗震和隔震设计方面取得了突破性进展。具有代表性成就的是日本2008年采用预制装配框架结构建成的两栋58层的东京塔。同时,日本的预制混凝土建筑体系设计、制作和施工的标准规范也很完善,目前使用的预制规范有《预制混凝土工程》(JASSl0)和《混凝土幕墙》(JASSl4)。 Japan and South Korea have learned from the successful experience of Europe and the United States, on the basis of exploring the standardized design and construction of prefabricated buildings. Combined with their own requirements. Breakthroughs have been made in the integral seismic and isolation design of prefabricated structural systems. Representative achievements are the two 58-story Tokyo Towers built in Japan in 2008 using prefabricated frame structures. At the same time, the standard specifications for the design, production and construction of precast concrete building systems in Japan are also very complete. The currently used precast specifications include "Precast Concrete Engineering" (JASS10) and "Concrete Curtain Wall" (JASS14).

我国从20世纪五六十年代开始研究装配式混凝土建筑的设计施工技术,形成了一系列装配式混凝土建筑体系,较为典型的建筑体系有装配式单层工业厂房建筑体系、装配式多层框架建筑体系、装配式大板建筑体系等。到20世纪80年代装配式混凝土建筑的应用达到全盛时期,全国许多地方都形成了设计、制作和施工安装一体化的装配式混凝土工业化建筑模式。装配式混凝土建筑和采用预制空心楼板的砌体建筑成为两种最主要的建筑体系,应用普及率达70%以上。由于装配式建筑的功能和物理性能存在许多局限和不足,我国的装配式混凝土建筑设计和施工技术研发水平还跟不上社会需求及建筑技术发展的变化,到20世纪90年代中期,装配式混凝土建筑已逐渐被全现浇混凝土建筑体系取代,目前除装配式单层工业厂房建筑体系应用较广泛外。其他预制装配式建筑体系的工程应用极少。预制结构抗震的整体性和设计施工管理的专业化研究不够,造成其技术经济性较差。是导致预制结构长期处于停滞状态的根本原因。 my country began to study the design and construction technology of prefabricated concrete buildings in the 1950s and 1960s, and formed a series of prefabricated concrete building systems. The more typical building systems include prefabricated single-storey industrial plant building systems and prefabricated multi-storey frame buildings. system, prefabricated slab building system, etc. By the 1980s, the application of prefabricated concrete buildings reached its heyday, and many parts of the country formed a prefabricated concrete industrialized building model integrating design, production, construction and installation. Prefabricated concrete buildings and masonry buildings with prefabricated hollow-core slabs have become the two most important building systems, with an application penetration rate of over 70%. Due to the many limitations and deficiencies in the functions and physical properties of prefabricated buildings, the level of design and construction technology research and development of prefabricated concrete buildings in China has not kept up with the changes in social needs and the development of construction technology. By the mid-1990s, prefabricated concrete Buildings have been gradually replaced by all-cast-in-place concrete building systems. At present, except for the prefabricated single-story industrial plant building system, which is widely used. There are very few engineering applications of other prefabricated building systems. Insufficient research on the anti-seismic integrity of prefabricated structures and professional design and construction management results in poor technical and economic efficiency. It is the root cause of the long-term stagnation of prefabricated structures.

预应力薄板叠合楼板1940~1942年间,英国P.W.埃伯利斯首先创议把下部用预应力薄板作为模板与上部现浇混凝土组成一个整体。40年代末到50年代初,英国、苏联、瑞士、瑞典、法国、波兰、奥地利等国都开始采用这类楼板。60~70年代迅速发展,特别是法国和联邦德国目前已广泛应用在各类房屋建筑中。中国于1980年进行试制。经过多种跨度和不同荷载的结构试验,1981年在北京27层高的西苑饭店工程首次采用,面积约2万平方米。此后,在一些高层旅游宾馆、办公楼、外交公寓、仓库等工程中,得到推广。 Between 1940 and 1942, British P.W. Eberlis first proposed to use the prestressed thin slab as a formwork in the lower part and form a whole with the cast-in-place concrete in the upper part. From the late 1940s to the early 1950s, Britain, the Soviet Union, Switzerland, Sweden, France, Poland, Austria and other countries began to adopt this type of floor. It developed rapidly in the 1960s and 1970s, especially in France and the Federal Republic of Germany, and has been widely used in various housing constructions. Trial production was carried out in China in 1980. After structural tests with various spans and different loads, it was first used in the 27-storey Xiyuan Hotel project in Beijing in 1981, with an area of about 20,000 square meters. Since then, it has been promoted in some high-rise tourist hotels, office buildings, diplomatic apartments, warehouses and other projects.

叠合楼板是预制和现浇混凝土相结合的一种较好结构形式。预制预应力薄板(厚5~8厘米)与上部现浇混凝土层结合成为一个整体,共同工作。薄板的预应力主筋即是叠合楼板的主筋,上部混凝土现浇层仅配置负弯矩钢筋和构造钢筋。预应力薄板用作现浇混凝土层的底模,不必为现浇层支撑模板。薄板底面光滑平整,板缝经处理后,顶棚可以不再抹灰。这种叠合楼板具有现浇楼板的整体性、刚度大、抗裂性好、不增加钢筋消耗、节约模板等优点。由于现浇楼板不需支模,还有大块预制混凝土隔墙板可在结构施工阶段同时吊装,从而可提前插入装修工程,缩短整个工程的工期。 Composite slabs are a better structural form that combines prefabricated and cast-in-place concrete. The prefabricated prestressed thin slab (thickness 5-8 cm) is combined with the upper cast-in-place concrete layer to form a whole and work together. The prestressed main reinforcement of the thin slab is the main reinforcement of the laminated floor, and the upper concrete cast-in-place layer is only equipped with negative moment reinforcement and structural reinforcement. The prestressed slab is used as the bottom form for the cast-in-place concrete course, and it is not necessary to support the formwork for the cast-in-place course. The bottom surface of the thin board is smooth and flat, and the ceiling can no longer be plastered after the seams of the board are treated. This kind of laminated floor has the advantages of integrity of cast-in-place floor, high rigidity, good crack resistance, no increase in steel consumption, saving formwork, etc. Since the cast-in-place floor slab does not need formwork, there are also large prefabricated concrete partition walls that can be hoisted at the same time during the structural construction stage, so that the decoration project can be inserted in advance and the construction period of the entire project can be shortened.

楼板跨度在8米以内,能广泛用于旅馆、办公楼、学校、住宅、医院、仓库、停车场、多层工业厂房等各种房屋建筑工程。预应力薄板按叠合面的构造不同,可分为三类:①叠合面承受的剪应力较小,叠合面不设抗剪钢筋,但要求混凝土上表面粗糙、划毛或留一些结合洞。②叠合面承受的剪应力较大,薄板表面除要求粗糙划毛外,还要增设抗剪钢筋,钢筋直径和间距经计算确定。钢筋的形状有波形、螺旋形及点焊网片弯折成三角形断面的。③预制薄板上表面设有钢桁架,用以加强薄板施工时的刚度,减少薄板下面架设的支撑。 The floor span is within 8 meters, and can be widely used in various housing construction projects such as hotels, office buildings, schools, residences, hospitals, warehouses, parking lots, and multi-storey industrial plants. Prestressed thin slabs can be divided into three categories according to the structure of the superimposed surface: ① The shear stress on the superimposed surface is small, and no shear reinforcement is provided on the superimposed surface, but the upper surface of the concrete is required to be rough, scratched or left some joints. Hole. ②The superimposed surface bears a large shear stress. In addition to the rough scratching required on the surface of the thin plate, additional shear reinforcement is required. The diameter and spacing of the reinforcement are determined by calculation. The shape of the steel bar has a wave shape, a spiral shape, and a spot-welded mesh sheet bent into a triangular cross-section. ③Steel trusses are installed on the upper surface of the prefabricated thin slab to strengthen the rigidity of the thin slab during construction and reduce the support erected under the thin slab.

混凝土叠合楼板为叠合结构的一部分,是预制和现浇相结合的一种结构形式。叠合板在施工过程中,先在底部安放预制底板,它在浇筑上层混凝土起模板的作用,而后两部分混凝土形成整体来承受荷载。叠合楼版集现浇和预制的优点于一身,是一种很有发展前途的楼盖形式。 The concrete laminated floor is a part of the laminated structure, which is a structural form combining prefabrication and cast-in-place. During the construction process of the composite slab, the prefabricated floor is first placed at the bottom, which acts as a formwork for pouring the upper concrete, and then the two parts of concrete form a whole to bear the load. Composite floor plan combines the advantages of cast-in-place and prefabrication, and is a very promising floor form.

1)从受力上看,相对于全预制装配楼板而言,可提高结构的整体刚度和抗震性能,在配置同样的预应力筋时,相对于全截面的荷载作用受拉边缘而言,在预制截面上建立的有效预应力较大,从而提高了结构的抗裂性能。在同样抗裂性能的前提下,则可以节省预应力筋的用量。 1) From the point of view of force, compared with fully prefabricated floor slabs, the overall stiffness and seismic performance of the structure can be improved. The effective prestress established on the prefabricated section is larger, thereby improving the crack resistance of the structure. Under the premise of the same crack resistance, the amount of prestressed tendons can be saved.

2)从制作工艺上看,叠合楼版的主要受力部分在工厂制造,机械化程度高,易于保证质量,采用流水作业生产速度快,并且可以提前制作,不占工期,而且预制部分的模板可以重复使用。后浇混凝土以预制底板做模板,较全现浇楼板可以减少支模的工作量,减少施工现场湿作业,改善施工现场条件,提高施工效率,尤其是在高空作业或支模困难的条件下效果更是明显,并且工厂预制易于实现较复杂的截面形式的制作,对于开发构件承载潜力,降低结构自重具有明显的优势。同时大跨度叠合板还符合现代住宅楼盖的发展方向。 2) From the point of view of the production process, the main stress-bearing parts of the laminated floor plate are manufactured in the factory, with a high degree of mechanization, easy to ensure quality, fast production speed by assembly line operation, and can be made in advance without taking up the construction period, and the template of the prefabricated part Can be reused. The post-cast concrete uses the prefabricated bottom slab as the formwork, which can reduce the workload of the formwork, reduce the wet work on the construction site, improve the conditions of the construction site, and improve the construction efficiency, especially in the conditions of high-altitude operations or difficult formwork support. It is even more obvious, and factory prefabrication is easy to realize the production of more complex cross-sectional forms, which has obvious advantages in developing the bearing potential of components and reducing the self-weight of structures. At the same time, the large-span laminated slab is also in line with the development direction of modern residential floors.

3)长期的科学实验和工程实践结果表明,混凝土结构工程中采用叠合楼版可以取得十分明显的效益,当结合采用高强度钢筋时,钢筋用量大大降低。当结合采用空腹预制截面时,还可以节省混凝土用量,工期也相应的缩短,它的不足之处在于增加了预制加工和运输吊装环节。 3) The results of long-term scientific experiments and engineering practice show that the use of laminated floor panels in concrete structure engineering can achieve very obvious benefits. When combined with high-strength steel bars, the amount of steel bars is greatly reduced. When combined with the use of hollow prefabricated sections, the amount of concrete can also be saved, and the construction period is correspondingly shortened. Its disadvantage lies in the increase of prefabricated processing and transportation and hoisting links.

4)混凝土叠合楼板截面由预制和现浇两部分组成,它们共同的工作性能依赖于新旧叠合面的抗剪性能,因此叠合面抗剪设计是非常重要的部分,可见混凝土叠合楼板对施工技术含量也有较高的要求,特别在施工质量管理方面想使用单位提出了更严格的要求。 4) The section of the concrete laminated slab is composed of prefabricated and cast-in-place parts. Their common working performance depends on the shear performance of the old and new laminated surfaces. Therefore, the shear resistance design of the laminated surface is a very important part. It can be seen that the concrete laminated floor There are also higher requirements for construction technology content, especially stricter requirements for construction quality management.

主要分一下四个方面研究叠合楼板 Mainly divided into four aspects to study laminated floor slabs

1)系统介绍叠合楼板结构体系的基本原理和应用技术; 1) Systematically introduce the basic principles and application technologies of the composite floor structure system;

2)研究叠合楼盖结构体系的方案比选、结构设计和施工技术; 2) Study the scheme comparison, structural design and construction technology of the laminated floor structure system;

3)对叠合楼盖结构体系的技术经济指标进行比较研究,系统的描述混凝土叠合板的技术经济性。 3) To conduct a comparative study on the technical and economic indicators of the laminated floor structure system, and systematically describe the technical and economical performance of the concrete laminated slab.

发明内容 Contents of the invention

本发明的目的在于提供一种格构式叠合梁与板及其施工方法,主要为了开发一种整体性好、传力明确、构造简单、安全可靠、节约材料和施工方便的格构式叠合梁与板。能够有效的解决叠合板的运输和施工困难等问题。 The purpose of the present invention is to provide a lattice-type laminated beam and slab and its construction method, mainly to develop a lattice-type laminated beam with good integrity, clear force transmission, simple structure, safety and reliability, material saving and convenient construction. Composite beams and slabs. It can effectively solve the problems of transportation and construction difficulties of the laminated boards.

本发明的目的由如下技术方案实现的: The purpose of the present invention is achieved by the following technical solutions:

格构式叠合梁与板主要由混凝土边壳、混凝土中肋、混凝土横肋、混凝土底壳、底部纵向钢筋、箍筋、腰筋、预制叠合楼板、楼板搭接肋、搭接肋外伸钢筋、楼板外伸钢筋和后浇混凝土层等组成。其特征在于,两侧混凝土边壳中间为混凝土中肋,混凝土横肋3等间距沿全梁均匀布置,两端不设置混凝土横肋,最外侧混凝土横肋3距两端长度为两个混凝土横肋3间距离的一半,混凝土边壳和混凝土横肋3的高度相等,混凝土中肋2的高度为混凝土边壳1高度的三分之二;预制叠合楼板为工字型,两端分别有两个楼板搭接肋,预制叠合楼板的底部与混凝土边壳和混凝土横肋3的顶面同一高度,预制叠合楼板的端部至混凝土边壳的外侧边缘,相邻两片预制叠合楼板的楼板搭接肋置于同一个混凝土横肋上,楼板搭接肋端部至混凝土中肋的两侧面的边缘,底部纵向钢筋、箍筋、腰筋、搭接肋外伸钢筋和楼板外伸钢筋均外伸,格构式叠合梁两侧的楼板外伸钢筋一一对应,均伸到混凝土中肋上部,两侧的搭接肋外伸钢筋相互错开,均伸到对侧楼板搭接肋的端部。 Lattice composite beams and slabs are mainly composed of concrete side shells, concrete middle ribs, concrete transverse ribs, concrete bottom shells, bottom longitudinal steel bars, stirrups, waist bars, prefabricated laminated floors, floor lap ribs, and outer lap ribs. It is composed of stretched steel bars, floor steel bars and post-cast concrete layers. It is characterized in that the middle of the concrete side shells on both sides is a concrete middle rib, the concrete transverse ribs 3 are evenly arranged along the whole beam at equal intervals, no concrete transverse ribs are arranged at both ends, and the distance from the outermost concrete transverse rib 3 to both ends is two concrete transverse ribs. Half of the distance between the ribs 3, the height of the concrete side shell and the concrete transverse rib 3 is equal, the height of the concrete middle rib 2 is two-thirds of the height of the concrete side shell 1; the prefabricated laminated floor is I-shaped, with The two floor slabs overlap ribs, the bottom of the prefabricated laminated slab is at the same height as the concrete side shell and the top surface of the concrete transverse rib 3, the end of the prefabricated laminated floor slab reaches the outer edge of the concrete side shell, and two adjacent prefabricated laminated slabs The floor lap ribs of the floor slab are placed on the same concrete transverse rib, from the end of the floor lap ribs to the edges of the two sides of the concrete middle rib, the bottom longitudinal reinforcement, stirrups, waist reinforcement, lap rib overhanging reinforcement and floor outer The stretched steel bars are all stretched out, and the stretched steel bars on both sides of the floor slab of the lattice composite beam correspond to each other, and they all extend to the upper part of the concrete middle rib. end of the rib.

格构式叠合梁与板的加工方法: Processing method of lattice composite beam and slab:

a、制作格构式叠合梁与板的模具; a. Make molds for lattice-type laminated beams and panels;

b、绑扎底部纵向钢筋、箍筋、腰筋,浇筑并养护; b. Binding bottom longitudinal steel bars, stirrups and waist bars, pouring and curing;

c、绑扎预制叠合楼板钢筋,包括搭接肋外伸钢筋、楼板外伸钢筋,浇筑并养护; c. Binding the prefabricated laminated floor reinforcements, including the overlapping ribs and the floor extensions, pouring and curing;

d、格构式叠合梁与柱及其他格构式叠合梁安装搭接; d. Latticed composite beams and columns and other latticed composite beams are installed and lapped;

e、将板与梁安装搭接; e. Lap the slab and the beam;

f、浇筑格构式叠合梁与板并养护。 f. Pour lattice-type composite beams and slabs and maintain them.

本发明的优点及有益效果: Advantage of the present invention and beneficial effect:

本发明的效果和优点是承载力高、施工方便、施工速度快、经济效果好等特点。运输方便,运输过程中不易损坏,施工过程中避免穿筋,缩短工时,降低造价。 The effects and advantages of the invention are high bearing capacity, convenient construction, fast construction speed, good economic effect and the like. It is easy to transport, not easy to be damaged during transportation, avoids wearing ribs during construction, shortens working hours, and reduces construction costs.

附图说明 Description of drawings

图1为格构式叠合梁平面示意图。 Figure 1 is a schematic plan view of a lattice-type composite beam.

图2为图1A-A剖面示意图。 Fig. 2 is a schematic cross-sectional view of Fig. 1A-A.

图3为格构式叠合梁与板平面示意图。 Figure 3 is a schematic plan view of lattice-type composite beams and slabs.

图中,1为混凝土边壳;2为混凝土中肋;3为混凝土横肋;4为混凝土底壳;5为底部纵向钢筋;6为箍筋;7为腰筋;8为预制叠合楼板;9为楼板搭接肋;10为搭接肋外伸钢筋;11为楼板外伸钢筋;12为后浇混凝土层。 In the figure, 1 is the concrete side shell; 2 is the concrete middle rib; 3 is the concrete transverse rib; 4 is the concrete bottom shell; 5 is the bottom longitudinal reinforcement; 6 is the stirrup; 9 is the lap rib of the floor; 10 is the overhanging steel bar of the lap joint; 11 is the overhanging steel bar of the floor; 12 is the post-cast concrete layer.

具体实施方式 Detailed ways

下面结合技术方案和参照附图对本发明进行详细说明。 The present invention will be described in detail below in combination with technical solutions and with reference to the accompanying drawings.

本发明提出的格构式叠合梁与板如图1~图3所示。格构式叠合梁与板主要由混凝土边壳1、混凝土中肋2、混凝土横肋3、混凝土底壳4、底部纵向钢筋5、箍筋6、腰筋7、预制叠合楼板8、楼板搭接肋9、搭接肋外伸钢筋10、楼板外伸钢筋11和后浇混凝土层12等组成。其特征在于,两侧混凝土边壳1中间为混凝土中肋2,混凝土横肋3等间距沿全梁均匀布置,两端不设置混凝土横肋3,最外侧混凝土横肋3距两端长度为两个混凝土横肋3间距离的一半,混凝土边壳1和混凝土横肋3的高度相等,混凝土中肋2的高度为混凝土边壳1高度的三分之二;预制叠合楼板8为工字型,两端分别有两个楼板搭接肋9,预制叠合楼板8的底部与混凝土边壳1和混凝土横肋3的顶面同一高度,预制叠合楼板8的端部至混凝土边壳1的外侧边缘,相邻两片预制叠合楼板8的楼板搭接肋9置于同一个混凝土横肋3上,楼板搭接肋9端部至混凝土中肋2的两侧面的边缘,底部纵向钢筋5、箍筋6、腰筋7、搭接肋外伸钢筋10和楼板外伸钢筋11均外伸,格构式叠合梁两侧的楼板外伸钢筋11一一对应,均伸到混凝土中肋2上部,两侧的搭接肋外伸钢筋10相互错开,均伸到对侧楼板搭接肋9的端部。 The lattice type composite beam and plate proposed by the present invention are shown in Fig. 1 to Fig. 3 . The lattice composite beam and slab are mainly composed of concrete side shell 1, concrete middle rib 2, concrete transverse rib 3, concrete bottom shell 4, bottom longitudinal reinforcement 5, stirrup 6, waist reinforcement 7, prefabricated composite floor 8, floor slab It is composed of lap joint ribs 9, lap joint rib overhanging steel bars 10, floor slab overhanging steel bars 11, post-cast concrete layer 12 and the like. It is characterized in that the middle of the concrete side shells 1 on both sides is a concrete middle rib 2, the concrete transverse ribs 3 are evenly arranged along the whole beam at equal intervals, no concrete transverse ribs 3 are arranged at both ends, and the distance from the outermost concrete transverse rib 3 to both ends is two Half of the distance between the three concrete transverse ribs, the height of the concrete side shell 1 and the concrete transverse rib 3 are equal, the height of the concrete middle rib 2 is two-thirds of the height of the concrete side shell 1; the prefabricated laminated floor 8 is I-shaped , there are two floor lap ribs 9 at both ends, the bottom of the prefabricated laminated floor 8 is at the same height as the top surface of the concrete side shell 1 and the concrete transverse rib 3, and the end of the prefabricated laminated floor 8 is connected to the concrete side shell 1 On the outer edge, the floor overlapping ribs 9 of two adjacent prefabricated laminated floors 8 are placed on the same concrete transverse rib 3, the ends of the floor overlapping ribs 9 reach the edges of both sides of the concrete middle rib 2, and the bottom longitudinal reinforcement 5 , stirrup 6, waist bar 7, lap rib overhanging reinforcement 10 and floor overhanging reinforcement 11 are all overhanging, and the floor overhanging reinforcement 11 on both sides of the lattice type composite beam corresponds one by one, and all extend to the concrete rib 2. In the upper part, the overhanging reinforcing bars 10 of the overlapping ribs on both sides are staggered from each other, and all extend to the ends of the overlapping ribs 9 of the floor slab on the opposite side.

a、制作格构式叠合梁与板的模具; a. Make molds for lattice-type laminated beams and plates;

b、绑扎底部纵向钢筋5、箍筋6、腰筋7,浇筑并养护; b. Bind the bottom longitudinal steel bar 5, stirrup bar 6, waist bar 7, pour and maintain;

c、绑扎预制叠合楼板8钢筋,包括搭接肋外伸钢筋10、楼板外伸钢筋11,浇筑并养护; c. Binding the 8 steel bars of the prefabricated laminated floor slabs, including the overhanging steel bars 10 of the overlapping ribs and the overhanging steel bars 11 of the floor slabs, pouring and curing;

d、格构式叠合梁与柱及其他格构式叠合梁安装搭接; d. Latticed composite beams and columns and other latticed composite beams are installed and lapped;

e、将板与梁安装搭接; e. Lap the slab and the beam;

f、浇筑格构式叠合梁与板并养护。 f. Pour lattice-type composite beams and slabs and maintain them.

Claims (2)

1.一种格构式叠合梁与板,包括格构式叠合梁、预制叠合楼板(8)、楼板搭接肋(9)、搭接肋外伸钢筋(10)、楼板外伸钢筋(11)和后浇混凝土层(12),其中,格构式叠合梁由混凝土边壳(1)、混凝土中肋(2)、混凝土横肋(3)、混凝土底壳(4)、底部纵向钢筋(5)、箍筋(6)、腰筋(7)组成,其特征在于:两侧混凝土边壳(1)中间为混凝土中肋(2),混凝土横肋(3)等间距沿全梁均匀布置,两端不设置混凝土横肋(3),最外侧混凝土横肋(3)距两端长度为两个混凝土横肋(3)间距离的一半,混凝土边壳(1)和混凝土横肋(3)的高度相等,混凝土中肋(2)的高度为混凝土边壳(1)高度的三分之二;底部纵向钢筋(5)为一排,布置在混凝土底壳(4)中;箍筋(6)分别布置在混凝土边壳(1)与混凝土中肋(2)中,且混凝土中肋中的腰筋与混凝土边壳中的腰筋位于同一高度;预制叠合楼板(8)为工字型,两端分别有两个楼板搭接肋(9),预制叠合楼板(8)的底部与混凝土边壳(1)和混凝土横肋(3)的顶面同一高度,预制叠合楼板(8)的端部至混凝土边壳(1)的外侧边缘,相邻两片预制叠合楼板(8)的楼板搭接肋(9)置于同一个混凝土横肋(3)上,楼板搭接肋(9)端部至混凝土中肋(2)的两侧面的边缘,底部纵向钢筋(5)、箍筋(6)、腰筋(7)、搭接肋外伸钢筋(10)和楼板外伸钢筋(11)均外伸,格构式叠合梁两侧的楼板外伸钢筋(11)一一对应,均伸到混凝土中肋(2)上部,两侧的搭接肋外伸钢筋(10)相互错开,均伸到对侧楼板搭接肋(9)的端部。 1. A lattice-type laminated beam and slab, including a lattice-type laminated beam, a prefabricated laminated floor (8), floor lap ribs (9), lap rib overhanging reinforcement bars (10), floor overhangs steel bar (11) and post-cast concrete layer (12), wherein the lattice composite beam consists of concrete side shells (1), concrete middle ribs (2), concrete transverse ribs (3), concrete bottom shells (4), Bottom longitudinal steel bars (5), stirrups (6) and waist bars (7), characterized in that: the middle concrete ribs (2) are in the middle of the concrete side shells (1) on both sides, and the concrete transverse ribs (3) are equally spaced along the The entire beam is evenly arranged, no concrete transverse ribs (3) are set at both ends, the distance from the outermost concrete transverse rib (3) to both ends is half of the distance between the two concrete transverse ribs (3), the concrete side shell (1) and the concrete The height of the transverse ribs (3) is equal, the height of the concrete middle rib (2) is two-thirds of the height of the concrete side shell (1); the bottom longitudinal reinforcement (5) is arranged in a row in the concrete bottom shell (4) ; Stirrups (6) are respectively arranged in the concrete side shell (1) and the concrete middle rib (2), and the waist reinforcement in the concrete middle rib and the waist reinforcement in the concrete side shell are at the same height; the prefabricated laminated floor (8 ) is I-shaped, with two floor lap ribs (9) at both ends. The bottom of the prefabricated laminated floor (8) is at the same height as the top surface of the concrete side shell (1) and the concrete transverse rib (3). From the end of the laminated floor (8) to the outer edge of the concrete side shell (1), the overlapping ribs (9) of two adjacent prefabricated laminated floors (8) are placed on the same concrete transverse rib (3) , the end of the floor lap rib (9) to the edge of the two sides of the concrete middle rib (2), the bottom longitudinal reinforcement (5), stirrup (6), waist reinforcement (7), lap rib overhanging reinforcement (10 ) and floor overhanging steel bars (11) are both overhanging, and the floor overhanging steel bars (11) on both sides of the lattice composite beam correspond one-to-one, all extending to the upper part of the concrete middle rib (2), and the lapping ribs on both sides The overhanging reinforcing bars (10) are mutually staggered, and all stretch out to the ends of the overlapping ribs (9) of the floor slab on the opposite side. 2.一种如权利要求1所述的格构式叠合梁与板的加工方法,其特征在于: 2. A method for processing lattice type composite beams and plates as claimed in claim 1, characterized in that: a、制作格构式叠合梁与板的模具; a. Make molds for lattice-type laminated beams and panels; b、绑扎底部纵向钢筋(5)、箍筋(6)、腰筋(7),浇筑并养护; b. Bind the bottom longitudinal reinforcement (5), stirrup (6) and waist reinforcement (7), pour and maintain; c、绑扎预制叠合楼板(8)钢筋,包括搭接肋外伸钢筋(10)、楼板外伸钢筋(11),浇筑并养护; c. Binding the steel bars of the prefabricated laminated floor (8), including the overhanging steel bars (10) of the overlapping ribs and the overhanging steel bars (11) of the floor slab, pouring and curing; d、格构式叠合梁与柱及其他格构式叠合梁安装搭接; d. Latticed composite beams and columns and other latticed composite beams are installed and lapped; e、将板与梁安装搭接; e. Lap the slab and the beam; f、浇筑格构式叠合梁与板并养护。 f. Pour lattice-type composite beams and slabs and maintain them.
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CN1553014A (en) * 2003-05-29 2004-12-08 株式会社大宇建设 Steel concrete assembled beam by asymmetric section steel beam
WO2007131284A1 (en) * 2006-05-17 2007-11-22 Associated Valaire Pty Ltd Structural element and methods of use thereof
CN201649438U (en) * 2010-02-02 2010-11-24 哈尔滨工业大学深圳研究生院 FRP profile sea sand concrete beam and slab member
CN101967865A (en) * 2010-06-13 2011-02-09 吴方伯 Reinforced concrete hollow floor slab

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1409976A1 (en) * 1960-04-04 1969-02-20 Nikolaus Closset Process for the production of a reinforced concrete ribbed ceiling from in-situ concrete and formwork for carrying out the process
CN1553014A (en) * 2003-05-29 2004-12-08 株式会社大宇建设 Steel concrete assembled beam by asymmetric section steel beam
WO2007131284A1 (en) * 2006-05-17 2007-11-22 Associated Valaire Pty Ltd Structural element and methods of use thereof
CN201649438U (en) * 2010-02-02 2010-11-24 哈尔滨工业大学深圳研究生院 FRP profile sea sand concrete beam and slab member
CN101967865A (en) * 2010-06-13 2011-02-09 吴方伯 Reinforced concrete hollow floor slab

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