CN104652705B - Prefabricated and assembly type steel reinforced concrete column with high-performance concrete frame and construction method - Google Patents
Prefabricated and assembly type steel reinforced concrete column with high-performance concrete frame and construction method Download PDFInfo
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Abstract
Description
技术领域technical field
本发明属于建筑技术领域,特别涉及一种带高性能混凝土边框的预制装配型钢混凝土柱及施工方法。The invention belongs to the technical field of buildings, in particular to a prefabricated steel concrete column with a high-performance concrete frame and a construction method.
背景技术Background technique
型钢混凝土结构(常译为Steel Reinforced Concrete Structure,简称SRC结构)是指在钢筋混凝土构件截面内配置型钢所形成的钢-混凝土组合结构形式。与钢筋混凝土结构相比,由于在钢筋混凝土截面内部配置型钢,型钢混凝土结构具有强度高、刚度大、抗震性能好、截面尺寸小等显著优势。与钢结构相比由于型钢外部包裹有钢筋混凝土,型钢混凝土结构具有造价低、刚度大、耐火性能和耐久性能好等突出优点。因此,从经济成本、受力性能、耐久性能和耐火性能等方面的综合分析比较,型钢混凝土结构兼具钢筋混凝土结构和钢结构二者的优点,具有显著性能优势。Steel Reinforced Concrete Structure (often translated as Steel Reinforced Concrete Structure, referred to as SRC structure) refers to the form of steel-concrete composite structure formed by disposing steel in the cross section of reinforced concrete members. Compared with the reinforced concrete structure, due to the configuration of steel inside the reinforced concrete section, the steel concrete structure has significant advantages such as high strength, high rigidity, good seismic performance, and small section size. Compared with the steel structure, because the steel is wrapped with reinforced concrete, the steel concrete structure has the outstanding advantages of low cost, high rigidity, good fire resistance and durability. Therefore, from the comprehensive analysis and comparison of economic cost, mechanical performance, durability and fire resistance, the steel concrete structure has the advantages of both reinforced concrete structure and steel structure, and has significant performance advantages.
目前型钢混凝土结构主要应用在一些大型超高层建筑和大跨建筑,如上海金茂大厦、上海环球金融中心、CCTV新台址、国贸三期主楼等工程均采用型钢混凝土结构目前型钢混凝土结构主要应用在一些大型超高层建筑和大跨建筑,如上海金茂大厦、上海环球金融中心、CCTV新台址、国贸三期主楼等工程均采用型钢混凝土结构,而在量大面广的一般高层建筑和多层建筑中却较少使用型钢混凝土结构,其最主要原因之一就是型钢混凝土结构现场施工工序繁多且构造连接复杂。正是由于型钢混凝土结构施工复杂这一突出缺点,导致型钢混凝土结构推广应用受到极大制约,致使型钢混凝土结构优异的综合性能得不到充分发挥。At present, the steel concrete structure is mainly used in some large super high-rise buildings and long-span buildings, such as Shanghai Jinmao Tower, Shanghai World Financial Center, CCTV new station site, China World Trade Center Phase III main building and other projects. Some large super high-rise buildings and long-span buildings, such as Shanghai Jinmao Tower, Shanghai World Financial Center, CCTV new station site, and the main building of China World Trade Center Phase III, all use steel-concrete structures. Steel-concrete structures are seldom used in buildings. One of the most important reasons is that the on-site construction procedures of steel-concrete structures are numerous and the structural connections are complicated. It is precisely because of the outstanding disadvantage of complex construction of steel concrete structures that the popularization and application of steel concrete structures is greatly restricted, resulting in the failure of full play to the excellent comprehensive performance of steel concrete structures.
发明内容Contents of the invention
为了克服上述现有技术的缺点,本发明的目的在于提供一种带高性能混凝土边框的预制装配型钢混凝土柱及施工方法,采用部分预制装配部分现浇的思想,首先在工厂预制PSRC柱的外部边框部分,再在工地现场安装PSRC柱的外部边框部分,最后与梁、板一同整浇PSRC柱的内部空心部分,适合于不同工程情况需求,具有施工简便、成本低廉、性能优良的特点。In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a prefabricated assembled steel concrete column with a high performance concrete frame and a construction method, adopting the idea of partially prefabricated and partially cast-in-place, first prefabricating the outside of the PSRC column in the factory The frame part, and then install the external frame part of the PSRC column on the construction site, and finally pour the inner hollow part of the PSRC column together with the beam and slab, which is suitable for different engineering conditions and has the characteristics of simple construction, low cost and excellent performance.
为了实现上述目的,本发明采用的技术方案是:In order to achieve the above object, the technical scheme adopted in the present invention is:
一种带高性能混凝土边框的预制装配型钢混凝土柱,包括:A prefabricated steel concrete column with high performance concrete frame, comprising:
预制高性能混凝土空心柱1;Prefabricated high-performance concrete hollow column 1;
沿柱长方向设置于预制高性能混凝土空心柱1中的纵筋2;Longitudinal bars 2 arranged in the prefabricated high-performance concrete hollow column 1 along the column length direction;
沿柱长方向设置于预制高性能混凝土空心柱1中的型钢3;Section steel 3 arranged in the prefabricated high-performance concrete hollow column 1 along the column length direction;
等间距铺设于预制高性能混凝土空心柱1横截面上的箍筋4,其中纵筋2和型钢3均位于箍筋4的包围之中;The stirrups 4 laid on the cross-section of the prefabricated high-performance concrete hollow column 1 at equal intervals, wherein the longitudinal bars 2 and the section steel 3 are located in the surround of the stirrups 4;
以及,as well as,
填充于预制高性能混凝土空心柱1的中心空腔中的现浇混凝土5。The cast-in-place concrete 5 filled in the central cavity of the prefabricated high-performance concrete hollow column 1 .
所述型钢3为工字钢。The section steel 3 is an I-beam.
所述型钢3由两个工字钢呈十字交错构成。The section steel 3 is composed of two I-beams interlaced in a cross shape.
所述型钢3在柱长方向上,伸出预制高性能混凝土空心柱1的两端。The section steel 3 protrudes from both ends of the prefabricated high-performance concrete hollow column 1 in the column length direction.
所述箍筋4为焊接复合箍筋或连续螺旋高强箍筋。The stirrups 4 are welded composite stirrups or continuous spiral high-strength stirrups.
所述现浇混凝土5所采用的混凝土为普通混凝土、再生混凝土、轻骨料混凝土、橡胶混凝土、吸声混凝土或保温隔热混凝土。The concrete used in the cast-in-place concrete 5 is ordinary concrete, recycled concrete, lightweight aggregate concrete, rubber concrete, sound-absorbing concrete or thermal insulation concrete.
本发明还提供了所述带高性能混凝土边框的预制装配型钢混凝土柱的施工方法,其特征在于,步骤如下:The present invention also provides a construction method for the prefabricated steel concrete column with a high-performance concrete frame, characterized in that the steps are as follows:
1)、在工厂,在混凝土橡胶芯模中浇筑预制高性能混凝土空心柱1,并置入纵筋2、型钢3和箍筋4,完成预制部分;1) In the factory, pour the prefabricated high-performance concrete hollow column 1 in the concrete rubber mandrel, and insert longitudinal reinforcement 2, section steel 3 and stirrup 4 to complete the prefabricated part;
2)、在现场,安装带有纵筋2、型钢3和箍筋4的预制高性能混凝土空心柱1;2), on site, install a prefabricated high-performance concrete hollow column 1 with longitudinal reinforcement 2, section steel 3 and stirrup 4;
3)、向预制高性能混凝土空心柱1的中心空腔浇筑现浇混凝土5,并同时整浇梁、板部分。3) Pour in-situ concrete 5 into the central cavity of the prefabricated high-performance concrete hollow column 1, and simultaneously pour beams and slabs.
与现有技术相比,本发明的有益效果是:Compared with prior art, the beneficial effect of the present invention is:
1)施工简便。1) Easy construction.
PSRC柱的预制型钢骨架部分包括柱纵筋、柱中箍筋、型钢翼缘和四周混凝土,该部分均在工厂预制生产完成,在工地通过将预制部分的型钢与节点或钢柱直接连接(或与混凝土柱过渡连接),再浇筑混凝土内部空心部分即完成PSRC柱施工安装。与传统SRC柱施工安装相比,现场不用绑扎钢筋、支模、拆模和架设柱下临时支撑。经合理设计,PSRC柱的施工安装将与钢柱同样方便和快捷,施工性能将大为提高。The prefabricated section steel skeleton part of the PSRC column includes column longitudinal reinforcement, column stirrup, section steel flange and surrounding concrete. This part is prefabricated in the factory, and the prefabricated section steel is directly connected to the node or steel column at the construction site (or transition connection with the concrete column), and then pour the hollow part inside the concrete to complete the construction and installation of the PSRC column. Compared with the construction and installation of traditional SRC columns, there is no need to bind steel bars, set up formwork, remove formwork and erect temporary supports under the columns on site. After rational design, the construction and installation of PSRC columns will be as convenient and fast as steel columns, and the construction performance will be greatly improved.
2)功能提升。2) Function improvement.
如上所述,在PSRC柱中可以在预制部分采用高性能混凝土,现浇部分采用普通强度混凝土,二者混凝土强度等级可以不同。因此,在实际工程应用中,楼板混凝土选择时可以不受柱中混凝土强度限制,选用不同特性的各种类型混凝土,有效提升结构使用功能需求。例如对于PSRC柱的现浇部分混凝土,为节约资源能源,可以采用再生混凝土;为减轻自重,可以采用轻骨料混凝土;为提高减振隔音效果,可以采用橡胶混凝土或吸声混凝土;为提高保温性能,可以采用保温隔热混凝土。As mentioned above, in the PSRC column, high-performance concrete can be used in the prefabricated part, and ordinary-strength concrete can be used in the cast-in-place part, and the strength grades of the two concretes can be different. Therefore, in practical engineering applications, the choice of floor concrete can be independent of the strength of the concrete in the column, and various types of concrete with different characteristics can be selected to effectively improve the functional requirements of the structure. For example, for the cast-in-place concrete of the PSRC column, in order to save resources and energy, recycled concrete can be used; in order to reduce the self-weight, lightweight aggregate concrete can be used; in order to improve the effect of vibration reduction and sound insulation, rubber concrete or sound-absorbing concrete can be used; Performance, thermal insulation concrete can be used.
3)施工质量好。3) The construction quality is good.
在传统SRC柱施工中,由于SRC柱施工工序多、施工难度大,常出现SRC柱腹板中混凝土振捣差、混凝土强度不足和柱中钢筋错位等质量问题,施工质量不易控制。而在PSRC柱中,PSRC柱的边框部分为工厂预制,混凝土浇筑振捣方便并且可采用蒸汽养护,混凝土施工质量易于控制,尤其对于采用高性能混凝土时,PSRC柱在施工质量控制方面优势更加明显。In the construction of traditional SRC columns, due to the many construction procedures and high construction difficulties of SRC columns, quality problems such as poor concrete vibration in the SRC column web, insufficient concrete strength, and dislocation of steel bars in the column often occur, and the construction quality is difficult to control. In the PSRC column, the frame part of the PSRC column is prefabricated in the factory, the concrete is poured and vibrated conveniently, and steam curing can be used, and the concrete construction quality is easy to control, especially when high-performance concrete is used, the PSRC column has more obvious advantages in construction quality control .
总体来讲,采用预制装配技术的PSRC柱与传统SRC柱相比,简化了施工工序和施工难度,能有效解决长期制约传统SRC柱推广应用的关键难题,并且能充分发挥和有效提升传统SRC柱在受力性能、耐久性能、耐火性能和经济性能等方面的显著优势,可以广泛应用于各类钢筋混凝土和钢结构建筑中,尤其适用于大跨度、重荷载或复杂、不规则的高层建筑和超高层建筑。因此,对PSRC柱开展深入研究以促进其推广应用极具工程实际意义。Generally speaking, compared with traditional SRC columns, PSRC columns using prefabricated assembly technology simplifies the construction process and construction difficulty, can effectively solve the key problems that have long restricted the popularization and application of traditional SRC columns, and can give full play to and effectively improve the traditional SRC columns. It has significant advantages in mechanical performance, durability, fire resistance and economic performance, and can be widely used in various reinforced concrete and steel structures, especially for long-span, heavy-load or complex, irregular high-rise buildings and buildings. Super high-rise buildings. Therefore, it is of great engineering practical significance to carry out in-depth research on PSRC columns to promote their popularization and application.
附图说明Description of drawings
图1是本发明预制装配型钢混凝土柱的横截面示意图。Fig. 1 is a schematic cross-sectional view of a prefabricated steel concrete column of the present invention.
图2是本发明预制装配型钢混凝土柱预制部分的结构示意图。Fig. 2 is a structural schematic diagram of the prefabricated part of the prefabricated steel concrete column of the present invention.
图3是本发明预制装配型钢混凝土柱预制部分的俯视图。Fig. 3 is a top view of the prefabricated part of the prefabricated steel concrete column of the present invention.
图4是本发明预制装配型钢混凝土柱的结构示意图。Fig. 4 is a schematic structural view of the prefabricated steel concrete column of the present invention.
图5是本发明预制装配型钢混凝土柱的俯视图。Fig. 5 is a top view of the prefabricated steel concrete column of the present invention.
图6是本发明预制装配型钢混凝土柱与梁的安装示意图。Fig. 6 is a schematic diagram of the installation of prefabricated steel concrete columns and beams of the present invention.
具体实施方式detailed description
下面结合附图和实施例详细说明本发明的实施方式。The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.
本发明一种带高性能混凝土边框的预制装配型钢混凝土柱,采用部分预制装配部分现浇的思想,由预制部分和现浇部分组成,如图1至图5所示,包括:预制高性能混凝土空心柱1;沿柱长方向设置于预制高性能混凝土空心柱1中的纵筋2;沿柱长方向设置于预制高性能混凝土空心柱1中的型钢3;等间距铺设于预制高性能混凝土空心柱1横截面上的箍筋4,其中纵筋2和型钢3均位于箍筋4的包围之中;以及,填充于预制高性能混凝土空心柱1的中心空腔中的现浇混凝土5。其中,预制高性能混凝土空心柱1、纵筋2、型钢3和箍筋4组成预制部分,而现浇部分主要是现浇混凝土5。The present invention is a prefabricated assembled steel concrete column with a frame of high-performance concrete, which adopts the idea of partially prefabricated assembly and part cast-in-place, and is composed of a prefabricated part and a cast-in-place part, as shown in Figures 1 to 5, including: prefabricated high-performance concrete Hollow column 1; longitudinal reinforcement 2 arranged in the precast high-performance concrete hollow column 1 along the column length direction; section steel 3 arranged in the precast high-performance concrete hollow column 1 along the column length direction; laying equidistantly in the precast high-performance concrete hollow The stirrups 4 on the cross section of the column 1, wherein the longitudinal bars 2 and the section steel 3 are located in the surround of the stirrups 4; and, the cast-in-place concrete 5 filled in the central cavity of the prefabricated high-performance concrete hollow column 1 . Among them, the prefabricated high-performance concrete hollow column 1, longitudinal reinforcement 2, section steel 3 and stirrup 4 form the prefabricated part, while the cast-in-place part is mainly cast-in-place concrete 5 .
其中,再如图2和图3所示,型钢3由两个工字钢呈十字交错构成,型钢3在柱长方向上,伸出预制高性能混凝土空心柱1的两端,箍筋4可以为焊接复合箍筋或连续螺旋高强箍筋。如图4和图5所示,现浇混凝土5构成现浇部分。现浇混凝土5所采用的混凝土根据不同的需要可以为普通混凝土、再生混凝土、轻骨料混凝土、橡胶混凝土、吸声混凝土或保温隔热混凝土。Wherein, as shown in Fig. 2 and Fig. 3, the section steel 3 is composed of two I-beams in a criss-cross pattern. It is welded composite stirrup or continuous spiral high-strength stirrup. As shown in Fig. 4 and Fig. 5, the cast-in-place concrete 5 constitutes the cast-in-place part. The concrete used in the cast-in-place concrete 5 can be ordinary concrete, recycled concrete, lightweight aggregate concrete, rubber concrete, sound-absorbing concrete or thermal insulation concrete according to different needs.
其中:in:
1)预制部分采用高性能混凝土,可提高预制装配型钢混凝土柱的抗裂性能、耐久性能和耐火性能。1) The prefabricated part adopts high-performance concrete, which can improve the crack resistance, durability and fire resistance of prefabricated steel concrete columns.
2)在预制型钢骨架部分外伸小段型钢,在施工安装时与预埋柱外伸型钢用高强螺栓进行连接,可方便预制装配型钢混凝土柱与柱连接。也可通过螺栓与梁6连接,如图6所示。2) In the prefabricated steel skeleton part, a small section of section steel is used to connect with the extended section steel of the pre-embedded column with high-strength bolts during construction and installation, which can facilitate the connection of the prefabricated steel concrete column and the column. It can also be connected with the beam 6 by bolts, as shown in FIG. 6 .
3)为方便预制高性能混凝土空心柱1的柱中空心部分的制作,可以采用混凝土橡胶芯模重复利用。3) In order to facilitate the fabrication of the hollow part of the prefabricated high-performance concrete hollow column 1, the concrete rubber mandrel can be used repeatedly.
本发明具体施工方法为:Concrete construction method of the present invention is:
1)、在工厂,在混凝土橡胶芯模中浇筑预制高性能混凝土空心柱1,并置入纵筋2、型钢3和箍筋4,完成预制部分;1) In the factory, pour the prefabricated high-performance concrete hollow column 1 in the concrete rubber mandrel, and insert longitudinal reinforcement 2, section steel 3 and stirrup 4 to complete the prefabricated part;
2)、在现场,安装带有纵筋2、型钢3和箍筋4的预制高性能混凝土空心柱1。2), on site, install the prefabricated high-performance concrete hollow column 1 with longitudinal reinforcement 2, section steel 3 and stirrup 4.
3)、向预制高性能混凝土空心柱1的中心空腔浇筑现浇混凝土5,并同时整浇梁、板部分。3) Pour in-situ concrete 5 into the central cavity of the prefabricated high-performance concrete hollow column 1, and simultaneously pour beams and slabs.
综上,本发明通过为预先制作带高性能混凝土边框的型钢骨架,并待现场安装好后再与梁和楼板一起浇筑混凝土,保证了其良好的整体性。其中预制高性能混凝土型钢箱型骨架对二次浇注的混凝土产生了有效的环向约束力提高了其承载能力,同时高性能混凝土耐久性和延性均较好,型钢对预制高性能混凝土边框部分提供一定的防止侧向破坏作用。To sum up, the present invention guarantees its good integrity by prefabricating a section steel frame with a high-performance concrete frame, and pouring concrete together with beams and floor slabs after being installed on site. Among them, the prefabricated high-performance concrete steel box frame has an effective circumferential constraint force on the secondary poured concrete, which improves its bearing capacity. At the same time, the high-performance concrete has good durability and ductility. A certain degree of protection against lateral damage.
本发明有效地从结构上提高梁、柱的整体性,提高了结构的抗震性能,并同时极大改善构件在运输与吊装过程中变形能力,实现预制型钢混凝土构件受力性能和使用性能全面提高增强,形成一种新型高效的预制装配型钢混凝土柱技术。本发明所提出的预制型钢混凝土柱技术具有施工方便、适用性广、整体性能高等诸多显著性能优势,可以广泛应用建筑、厂房、桥柱等各种钢筋混凝土工程结构,具有广泛应用前景,具有重要的工程实践意义和社会经济效益。The invention effectively improves the structural integrity of beams and columns, improves the anti-seismic performance of the structure, and at the same time greatly improves the deformation capacity of components during transportation and hoisting, and realizes the comprehensive improvement of the mechanical performance and service performance of prefabricated steel concrete components Enhanced to form a new type of high-efficiency prefabricated steel concrete column technology. The prefabricated steel concrete column technology proposed by the present invention has many significant performance advantages such as convenient construction, wide applicability, and high overall performance, and can be widely used in various reinforced concrete engineering structures such as buildings, factory buildings, and bridge columns, and has wide application prospects. engineering practical significance and social and economic benefits.
本发明在传统预制柱基础上预制部分采用空心型钢高性能混凝土柱,有效提高预制部分整体性,大幅降低预制部分自重,满足现场吊装要求,是一种良好的预制方法。根据发明人提出设计方法,可以进一步优化高性能混凝土边框的厚度,型钢种类,预制混凝土内表面纹路,预制部分混凝土强度等各个参数,现浇混凝土强度和种类(再生混凝土、轻骨料混凝土等)以实现本实例优化设计。Based on the traditional prefabricated column, the present invention adopts the hollow steel high-performance concrete column for the prefabricated part, which effectively improves the integrity of the prefabricated part, greatly reduces the self-weight of the prefabricated part, and meets the requirements for on-site hoisting. It is a good prefabricated method. According to the design method proposed by the inventor, the thickness of the high-performance concrete frame, the type of steel, the texture of the inner surface of the precast concrete, the strength of the precast concrete and other parameters, the strength and type of cast-in-place concrete (recycled concrete, lightweight aggregate concrete, etc.) can be further optimized. In order to realize the optimal design of this example.
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CN105672571A (en) * | 2016-03-18 | 2016-06-15 | 广西大学 | Multi-bundle-shaped ultra-high-performance concrete constraint common concrete Z-shaped column and Z-shaped short-leg shear wall |
CN105952014A (en) * | 2016-06-23 | 2016-09-21 | 郑州三迪建筑科技有限公司 | Shape steel fireproof structure of steel structure building |
CN106113176A (en) * | 2016-06-27 | 2016-11-16 | 上海理工大学 | A kind of bamboo wood concrete column and preparation method thereof |
WO2018069752A1 (en) | 2016-10-14 | 2018-04-19 | Arcelormittal | Steel reinforced concrete column |
CN107587606A (en) * | 2017-09-25 | 2018-01-16 | 上海建工五建集团有限公司 | High performance concrete chain type combining structure |
CN108755963B (en) * | 2018-06-12 | 2023-04-25 | 西安建筑科技大学 | A partially prefabricated steel concrete giant frame structure and its construction method |
CN108755964B (en) * | 2018-06-19 | 2020-12-22 | 西安建筑科技大学 | A partially prefabricated assembled steel-concrete mixed column and construction method |
CN110565878A (en) * | 2019-09-20 | 2019-12-13 | 福州大学 | CFRP-I-steel-UHPC combined column and preparation method thereof |
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