CN108755962A - A kind of partial precast assembly hollow profile steel concrete hollow column and construction method - Google Patents
A kind of partial precast assembly hollow profile steel concrete hollow column and construction method Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 140
- 239000010959 steel Substances 0.000 title claims abstract description 140
- 239000004567 concrete Substances 0.000 title claims abstract description 50
- 238000010276 construction Methods 0.000 title claims abstract description 33
- 239000004574 high-performance concrete Substances 0.000 claims abstract description 34
- 238000009415 formwork Methods 0.000 claims abstract description 7
- 230000002787 reinforcement Effects 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 239000011150 reinforced concrete Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000009417 prefabrication Methods 0.000 abstract description 2
- 210000003205 muscle Anatomy 0.000 abstract 2
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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Abstract
Description
技术领域technical field
本发明属于建筑技术领域，特别涉及一种部分预制装配空腹型钢混凝土空心柱及施工方法。The invention belongs to the technical field of construction, in particular to a partially prefabricated and assembled hollow steel concrete hollow column 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),它是把型钢埋入混凝土中，并配有适量的纵向钢筋和箍筋的一种结构形式。配置的纵向钢筋和箍筋主要是构造所需，构件的承载能力主要依靠型钢部分。在型钢混凝土结构构件的截面中，型钢的配置可分为实腹式和空腹式两大类。作为一种重要的新型结构体系，它兼有普通混凝土结构和钢结构共同的优点：与钢筋混凝土结构相比，由于在截面中配置了型钢，型钢混凝土结构具有承载能力高、抗震性能好、截面尺寸小、施工速度快等显著优势；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刚度大、造价低、稳定性好、防火、防锈蚀能力好等突出优点。因此，从受力性能、经济成本、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), which is a structural form in which steel is embedded in concrete and equipped with an appropriate amount of longitudinal reinforcement and stirrups. The configured longitudinal steel bars and stirrups are mainly required for the structure, and the bearing capacity of the components mainly depends on the section steel. In the cross-section of steel concrete structural members, the configuration of steel can be divided into two categories: solid belly type and empty belly type. As an important new structural system, it has the common advantages of ordinary concrete structures and steel structures: compared with reinforced concrete structures, due to the configuration of steel in the section, steel concrete structures have high bearing capacity, good seismic performance, and cross-section It has obvious advantages such as small size and fast construction speed; compared with the steel structure, because the steel is wrapped with reinforced concrete, the steel concrete structure has outstanding advantages such as high rigidity, low cost, good stability, fire prevention and corrosion resistance. Therefore, from the comprehensive analysis and comparison of mechanical performance, economic cost, durability and fire resistance, the steel concrete structure has the advantages of both reinforced concrete structure and steel structure, and has significant performance advantages.
型钢混凝土结构现广泛用于超高层和大跨度结构等重要建筑中，如中国尊、上海金茂大厦、深圳地王大厦、上海环球金融中心、CCTV新台址、国贸三期主楼等标志性建筑，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。正是由于施工复杂这一突出缺点，导致型钢混凝土结构的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。Steel concrete structures are now widely used in important buildings such as super high-rise and long-span structures, such as China Zun, Shanghai Jinmao Tower, Shenzhen Diwang Tower, Shanghai World Financial Center, CCTV new station site, China World Trade Center Phase III main building and other landmark buildings, However, in general high-rise buildings and multi-storey buildings with large quantities and wide areas, steel concrete structures are rarely used. The main reason is that steel concrete structures have many construction procedures on site and complex structural connections. It is precisely because of the prominent shortcoming of complex construction that the popularization and application of steel-concrete structures is greatly restricted, resulting in the failure to fully exert 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部分预制装配空腹型钢混凝土空心柱及施工方法，基于预制装配的思想，本发明属于在工厂预制的PSRC空心柱，可在施工现场安装，最后通过外伸钢梁与梁、板进行连接，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 partially prefabricated and assembled hollow steel concrete hollow column and a construction method. Based on the idea of prefabricated assembly, the present invention belongs to PSRC hollow columns prefabricated in factories, which can be Installation, and finally connecting with beams and slabs through outstretched steel beams, 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:
一种部分预制装配空腹型钢混凝土空心柱，包括：A partially prefabricated hollow steel concrete hollow column 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中的型钢3上的钢板4；The steel plates 4 laid on the section steel 3 in the prefabricated high-performance concrete hollow column 1 at equal intervals;
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5，其中纵筋2和型钢3均位于箍筋5的包围之中。Stirrups 5 laid at equal intervals on the cross-section of the prefabricated high-performance concrete hollow column 1 , wherein the longitudinal bars 2 and the section steel 3 are located in the surround of the stirrups 5 .
所述型钢3为槽钢。The section steel 3 is channel steel.
所述型钢3由两个槽钢呈翼缘肢尖向内构成。The profiled steel 3 is formed by two channel steels in the shape of the flange limb tip facing inward.
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.
所述钢板4通过焊缝连接方式沿柱长方向等间距布置在型钢3上，形成矩形环状空心结构。The steel plates 4 are arranged on the section steel 3 at equal intervals along the column length direction by means of welding seam connection, forming a rectangular annular hollow structure.
所述箍筋5为焊接复合箍筋或连续螺旋高强箍筋。The stirrups 5 are welded composite stirrups or continuous spiral high-strength stirrups.
本发明还提供了所述部分预制装配型钢混凝土空心柱的施工方法，步骤如下：The present invention also provides the construction method of the partially prefabricated steel concrete hollow column, the steps are as follows:
1在工厂，将钢板4通过焊缝连接方式沿柱长方向布置在型钢3上，形成矩形环状空心结构。1 In the factory, the steel plate 4 is arranged on the section steel 3 along the column length direction through welding seam connection, forming a rectangular ring-shaped hollow structure.
2在工厂，在钢板4与型钢3形成的矩形环状空心结构中放置带有局部凸起的钢模板，浇筑高性能混凝土空心柱1，并置入纵筋2和箍筋5，完成预制部分；2 In the factory, a steel formwork with local protrusions is placed in the rectangular ring-shaped hollow structure formed by the steel plate 4 and the section steel 3, the high-performance concrete hollow column 1 is poured, and the longitudinal reinforcement 2 and stirrup 5 are placed to complete the prefabricated part ;
3在现场，安装带有纵筋2、型钢3、钢板4和箍筋5的预制高性能混凝土空心柱1；3 On site, install a prefabricated high performance concrete hollow column 1 with longitudinal reinforcement 2, section steel 3, steel plate 4 and stirrup 5;
4在现场，将型钢3和钢板4通过开孔钢板焊缝连接和高强螺栓连接与组合柱或钢柱直接连接，或与混凝土柱过渡连接；通过外伸钢梁与梁进行连接。4. On site, the section steel 3 and the steel plate 4 are directly connected to the composite column or steel column through perforated steel plate weld connection and high-strength bolt connection, or transitionally connected to the concrete column; and connected to the beam through the extended steel beam.
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。在工厂完成预制装配空腹型钢混凝土空心柱的制作，预制构件中型钢与钢板形成矩形环状空心结构，免去了在施工过程中的内部支模步骤，在工地通过将预制部分的型钢与节点或钢柱通过开孔钢板焊缝连接和高强螺栓连接(或与混凝土柱过渡连接)，即完成PSRC空心柱施工安装。与传统SRC柱相比，施工安装免去了现场绑扎钢筋、支模、拆模和架设柱下临时支撑等步骤。经合理设计，PSRC空心柱的施工安装将同钢柱一样方便和快捷，施工性能将大为提高。1) Easy construction. Complete the production of prefabricated and assembled hollow steel concrete hollow columns in the factory. The medium-shaped steel and steel plates of the prefabricated components form a rectangular ring-shaped hollow structure, which eliminates the internal formwork step in the construction process. The steel column is connected by the perforated steel plate weld seam and the high-strength bolt (or transition connection with the concrete column), that is, the construction and installation of the PSRC hollow column is completed. Compared with the traditional SRC column, the construction and installation eliminates the steps of binding steel bars on site, setting up formwork, removing formwork and erecting temporary supports under the column. After rational design, the construction and installation of PSRC hollow columns will be as convenient and fast as steel columns, and the construction performance will be greatly improved.
2)性能增强。PSRC空心柱对内部型钢产生了环向约束力，承载能力提高，且内部型钢与钢板焊接形成矩形环状空心结构，结构自重有效降低，整体性能和抗震性能得到提高；并且在实际工程应用中，柱中混凝土强度不限制梁和楼板的混凝土选择，选用不同特性的混凝土，能有效提升结构的使用功能需求。2) Performance enhancement. The PSRC hollow column produces a circumferential constraint force on the internal section steel, which improves the bearing capacity, and the internal section steel and the steel plate are welded to form a rectangular ring-shaped hollow structure, which effectively reduces the self-weight of the structure, and improves the overall performance and seismic performance; and in practical engineering applications, The strength of the concrete in the column does not limit the choice of concrete for the beam and floor slab, and the selection of concrete with different characteristics can effectively improve the functional requirements of the structure.
3)施工质量好。传统SRC柱现场施工，由于施工工序多、施工难度大，常出现质量问题，如SRC柱腹板中混凝土振捣差不密实而强度不足和柱中钢筋易错位等，施工质量不易控制；而PSRC空心柱采用工厂预制，混凝土浇筑振捣方便并且可采用蒸汽养护，混凝土强度有保证施工质量易于控制，尤其当采用高性能混凝土时，PSRC空心柱在施工质量控制方面优势更加明显。3) The construction quality is good. Due to many construction procedures and high construction difficulty, traditional SRC columns often have quality problems, such as poor concrete vibration in the web of SRC columns, insufficient strength, and easy dislocation of steel bars in the column. The construction quality is not easy to control; while PSRC The hollow column is prefabricated in the factory, the concrete is easy to vibrate and can be cured by steam, the concrete strength is guaranteed and the construction quality is easy to control, especially when high-performance concrete is used, the PSRC hollow column has more obvious advantages in construction quality control.
总体来讲，采用预制装配技术的PSRC空心柱与传统SRC柱相比，施工工序简化和施工难度降低，长期制约传统SRC柱推广应用的关键难题得到有效解决，并且能有效提升和充分发挥传统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，其可以广泛应用于各类钢筋混凝土和钢结构建筑中，尤其适用于重荷载、大跨度或复杂、不规则的高层建筑和超高层建筑。因此，对PSRC空心柱开展深入研究以促进其推广应用具有深远的工程实际意义。Generally speaking, compared with the traditional SRC column, the PSRC hollow column using prefabricated assembly technology simplifies the construction process and reduces the construction difficulty. The column has significant advantages in terms of mechanical performance, durability, fire resistance and economic performance. It can be widely used in various reinforced concrete and steel structures, especially for heavy loads, long-span or complex and irregular high-rise buildings. buildings and super high-rise buildings. Therefore, it has far-reaching engineering practical significance to carry out in-depth research on PSRC hollow 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空心柱的结构示意图1。Fig. 1 is a schematic structural view 1 of a prefabricated steel concrete hollow column of the present invention.
图2是本发明预制装配型钢混凝土空心柱的骨架示意图2。Fig. 2 is a skeleton schematic diagram 2 of the prefabricated steel concrete hollow column of the present invention.
图3是本发明预制装配型钢混凝土空心柱的横截面示意图1。Fig. 3 is a schematic cross-sectional view 1 of a prefabricated steel concrete hollow column of the present invention.
图4是本发明预制装配型钢混凝土空心柱的横截面示意图2。Fig. 4 is a schematic cross-sectional view 2 of the prefabricated steel concrete hollow column of the present invention.
图5是本发明预制装配型钢混凝土空心柱的施工示意图。Fig. 5 is a construction schematic diagram of the prefabricated steel concrete hollow column of the present invention.
具体实施方式Detailed ways
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.
本发明预制装配型钢混凝土空心柱，如图1、图2、图3和图4所示，包括：The prefabricated steel concrete hollow column of the present invention, as shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, comprises:
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，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上的钢板4，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5，其中纵筋2和型钢3均位于箍筋5的包围之中，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，钢板4通过焊缝连接方式沿柱长方向布置在型钢3上，形成环形蜂窝状空心结构。箍筋5为焊接复合箍筋或连续螺旋高强箍筋。Prefabricated high-performance concrete hollow column 1, longitudinal reinforcement 2 arranged in the prefabricated high-performance concrete hollow column 1 along the column length direction, section steel 3 arranged in the prefabricated high-performance concrete hollow column 1 along the column length direction, arranged along the column length direction The steel plate 4 on the section steel 3 in the prefabricated high-performance concrete hollow column 1 is equidistantly laid on the stirrups 5 on the cross-section of the prefabricated high-performance concrete hollow column 1, wherein the longitudinal reinforcement 2 and the section steel 3 are located around the stirrup 5 Among them, the section steel 3 is composed of two I-beams interlaced in a cross shape. The section steel 3 protrudes from both ends of the prefabricated high-performance concrete hollow column 1 in the column length direction, and the steel plates 4 are arranged in the column length direction through welding On the section steel 3, an annular honeycomb hollow structure is formed. The stirrup 5 is a welded composite stirrup or a continuous spiral high-strength stirrup.
本发明预制高性能混凝土空心柱1、纵筋2、型钢3、钢板4和箍筋5在工厂一次性预制成型，得到预制装配型钢混凝土空心柱，如图2所示。将成型的预制装配型钢混凝土空心柱运送至施工现场与梁、柱等拼接。本发明采用预制装配的思想，可获得更好的整体性能。The prefabricated high-performance concrete hollow column 1, longitudinal reinforcement 2, section steel 3, steel plate 4 and stirrup 5 of the present invention are prefabricated in a factory at one time to obtain a prefabricated assembled steel concrete hollow column, as shown in Fig. 2 . The formed prefabricated steel concrete hollow columns are transported to the construction site and spliced with beams and columns. The invention adopts the idea of prefabrication and assembly, which can obtain better overall performance.
其中：in:
1)高性能混凝土空心柱1所基于的高性能混凝土，可提高预制装配型钢混凝土空心柱的抗裂性能、耐久性能和耐火性能。1) The high-performance concrete based on the high-performance concrete hollow column 1 can improve the crack resistance, durability and fire resistance of the prefabricated steel concrete hollow column.
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梁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梁连接。2) In the prefabricated steel skeleton part, a small section of section steel is used to connect with the prefabricated beam extension section steel with high-strength bolts during construction and installation, which can facilitate the connection of prefabricated steel concrete columns and beams.
参考图5，本发明具体施工方法为：With reference to Fig. 5, concrete construction method of the present invention is:
1)在工厂，将钢板4通过焊缝连接方式沿柱长方向布置在型钢3上，形成矩形环状空心结构。1) In the factory, the steel plate 4 is arranged on the section steel 3 along the column length direction through welding seam connection, forming a rectangular annular hollow structure.
2)在工厂，向钢板4与型钢3形成的矩形环状空心结构中浇筑高性能混凝土(用内模板置于型钢与钢板结合面，预留出空心部分)，并置入纵筋2和箍筋5，完成预制部分；2) In the factory, pour high-performance concrete into the rectangular ring-shaped hollow structure formed by the steel plate 4 and the section steel 3 (use the inner formwork to place the section steel and the steel plate on the joint surface, and reserve a hollow part), and place the longitudinal reinforcement 2 and hoop Rib 5, complete the prefabricated part;
3)在现场，安装带有纵筋2、型钢3、钢板4和箍筋5的预制高性能混凝土空心柱1；3) On site, install a prefabricated high-performance concrete hollow column 1 with longitudinal reinforcement 2, section steel 3, steel plate 4 and stirrup 5;
4)在现场，将型钢3和钢板4通过开孔钢板焊缝连接和高强螺栓连接与组合柱或钢柱直接连接，或与混凝土柱过渡连接；通过外伸钢梁与梁进行连接。4) On site, the section steel 3 and the steel plate 4 are directly connected to the composite column or steel column through perforated steel plate weld connection and high-strength bolt connection, or transitionally connected to the concrete column; they are connected to the beam through the extended steel beam.
综上，本发明预制装配空腹型钢混凝土空心柱采用高性能混凝土，有较好的耐久性和延性，预制高性能混凝土空心柱可对内部型钢产生环向约束力，提高其承载能力，同时型钢对预制高性能混凝土空心柱部分提供一定的防止侧向破坏的作用。In summary, the prefabricated and assembled hollow steel concrete hollow column with hollow section of the present invention adopts high-performance concrete, which has good durability and ductility. The prefabricated high-performance concrete hollow column part provides a certain protection against lateral damage.
本发明内部型钢与钢板焊接形成矩形环状空心结构，有效减轻结构自重，并改善了构件在运输与吊装过程中的变形，降低了吊装难度，实现预制型钢混凝土构件受力性能和使用性能全面增强，是一种新型高效的预制装配型钢混凝土空心柱技术。本发明所提出的部分预制型钢混凝土空心柱技术具有施工方便、适用性广、结构自重轻、抗震性能好等诸多显著性能优势，可以广泛应用建筑、厂房、桥梁等各种钢筋混凝土工程结构，应用前景广泛，具有重要的工程实践意义和社会经济效益。In the present invention, the internal section steel and the steel plate are welded to form a rectangular ring-shaped hollow structure, which effectively reduces the weight of the structure, improves the deformation of the component during transportation and hoisting, reduces the difficulty of hoisting, and realizes the overall enhancement of the mechanical performance and serviceability of the prefabricated steel concrete component , is a new type of high-efficiency prefabricated steel concrete hollow column technology. The partly prefabricated steel concrete hollow column technology proposed by the present invention has many significant performance advantages such as convenient construction, wide applicability, light structure weight, and good seismic performance, and can be widely used in various reinforced concrete engineering structures such as buildings, workshops, and bridges. It has broad prospects and has important engineering practical significance and social and economic benefits.
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Application publication date: 20181106 |