CN104405082A - Steel rib-steel pipe regenerated-concrete combined column with cross-shaped section - Google Patents
Steel rib-steel pipe regenerated-concrete combined column with cross-shaped section Download PDFInfo
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- CN104405082A CN104405082A CN201410613170.7A CN201410613170A CN104405082A CN 104405082 A CN104405082 A CN 104405082A CN 201410613170 A CN201410613170 A CN 201410613170A CN 104405082 A CN104405082 A CN 104405082A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 71
- 239000010959 steel Substances 0.000 title claims abstract description 71
- 239000004567 concrete Substances 0.000 title claims abstract description 48
- 230000002787 reinforcement Effects 0.000 claims abstract description 4
- 230000008929 regeneration Effects 0.000 claims 5
- 238000011069 regeneration method Methods 0.000 claims 5
- 230000003014 reinforcing effect Effects 0.000 claims 4
- 239000002131 composite material Substances 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 description 13
- 238000010276 construction Methods 0.000 description 7
- 239000011150 reinforced concrete Substances 0.000 description 7
- 238000011161 development Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明涉及一种钢骨-钢管再生混凝土十字形截面组合柱,由钢骨、钢管、钢筋骨架和混凝土组成,钢骨由钢板焊接而成,钢骨位于箍筋围成的十字形柱的肢上,钢管位于十字形柱的核心,混凝土是再生混凝土,再生混凝土位于钢管的内外、箍筋围成的十字形柱内。钢骨由钢板焊接成T形。箍筋围成的十字形柱的角上装有纵向钢筋。再生混凝土位于钢管内外,做到了节约资源,保护环境;钢筋骨架对混凝土起到了约束作用,增强了柱子的承载能力。本发明是高层和大跨度建筑物中框架结构的主要构件,具有承载力高,刚度大、重量轻,塑性、韧性好,抗冲击和抗疲劳性能好,抗震性能佳,具有良好的耐久性,节能环保等特点。
The invention relates to a steel frame-steel pipe recycled concrete cross-section composite column, which is composed of steel frame, steel pipe, steel bar skeleton and concrete, the steel frame is welded by steel plates, and the steel frame is located at the limb of the cross-shaped column surrounded by stirrups. Above, the steel pipe is located at the core of the cross-shaped column, the concrete is recycled concrete, and the recycled concrete is located inside and outside the steel pipe and inside the cross-shaped column surrounded by stirrups. The steel frame is welded into a T shape by steel plates. The corners of the cross-shaped column surrounded by stirrups are equipped with longitudinal reinforcement. Recycled concrete is located inside and outside the steel pipes, which saves resources and protects the environment; the steel skeleton acts as a constraint on the concrete and enhances the bearing capacity of the columns. The invention is the main component of the frame structure in high-rise and long-span buildings, which has high bearing capacity, high rigidity, light weight, good plasticity and toughness, good impact resistance and fatigue resistance, good earthquake resistance, and good durability. Features such as energy saving and environmental protection.
Description
技术领域 technical field
本发明涉及了一种混凝土构件,特别是涉及一种用于土木工程中的混凝土十字形柱,是一种新型的十字形截面组合柱。 The invention relates to a concrete component, in particular to a concrete cross-shaped column used in civil engineering, which is a novel cross-section composite column.
背景技术 Background technique
当前社会,随着经济的发展和居民生活水平的提升,人们对住宅的要求越来越高,尤其是对房屋结构和居室布局越来越重视。由于普通混凝土柱的截面尺寸往往大于墙体的厚度,影响了室内空间的使用,难以满足建筑美观的要求。为了解决这一问题,出现了钢筋混凝土十字形柱的结构形式。钢筋混凝土十字形柱结构体系的优点比较突出,国内外的学者、专家对此进行了广泛、深入的研究。钢筋混凝土十字形柱的理论体系已基本形成,比如天津、沈阳、广东、山西等省市已经完成了地方规程的编写,并指导于工程实践,建筑面积达数千万平方米。 In the current society, with the development of the economy and the improvement of residents' living standards, people have higher and higher requirements for housing, especially for housing structure and living room layout. Because the cross-sectional size of ordinary concrete columns is often larger than the thickness of the wall, it affects the use of indoor space, and it is difficult to meet the requirements of architectural beauty. In order to solve this problem, the structural form of reinforced concrete cross-shaped column appeared. The advantages of the reinforced concrete cross-shaped column structure system are more prominent, and scholars and experts at home and abroad have conducted extensive and in-depth research on it. The theoretical system of reinforced concrete cross-shaped columns has been basically formed. For example, Tianjin, Shenyang, Guangdong, Shanxi and other provinces and cities have completed the compilation of local regulations and guided them in engineering practice. The construction area reaches tens of millions of square meters.
但是,随着超高层和大跨度建筑结构的不断发展,纯粹的钢筋混凝土十字形柱的缺点越来越突出。如受到轴压比的限制,较大荷载下如果仍然采用普通钢筋混凝土十字形柱,将会导致柱的截面尺寸非常大;十字形柱的肢长不可以太长,柱肢过长后会容易产生剪力滞后现象,因此通常将十字形柱的肢长与肢宽限制在一定的比例范围内;十字形柱由于截面形式发生了改变,导致其力学特性也发生了变化,与普通矩形柱相比,承载能力和延性都有所下降,抗震性能并不理想。 However, with the continuous development of super high-rise and long-span building structures, the disadvantages of pure reinforced concrete cross-shaped columns are becoming more and more prominent. If limited by the axial compression ratio, if ordinary reinforced concrete cross-shaped columns are still used under heavy loads, the section size of the columns will be very large; the leg length of the cross-shaped columns should not be too long, otherwise it will easily produce Shear lag phenomenon, so the leg length and leg width of the cross-shaped column are usually limited within a certain range of proportions; the cross-shaped column has changed its mechanical properties due to the change of the cross-sectional form, compared with the ordinary rectangular column , the bearing capacity and ductility have decreased, and the seismic performance is not ideal.
同时,在目前情况下,全国每年从旧建筑物上拆下来的建筑垃圾中的废混凝土就有1360万吨,加上每年新建房屋产生4000万吨的建筑垃圾所产生的废混凝土,其巨大处理费用和由此引发的环境问题也十分突出。为了最大限度的减少对自然资源的开采,必须最大限度的增加对建筑垃圾再生利用。因此建筑垃圾的处理及应用技术的研究和应用推广势在必行。然而,目前由于再生骨料的内在损伤和由于其表面吸附了一层老砂浆而导致的吸水率大,致使其所配成的再生混凝土的强度、收缩性能及耐久性能等较普通混凝土差,极大地限制了其使用范围。 At the same time, under the current situation, there are 13.6 million tons of waste concrete in the construction waste demolished from old buildings every year in the country, plus the waste concrete produced by the 40 million tons of construction waste generated by new houses every year. Costs and the resulting environmental concerns are also prominent. In order to minimize the exploitation of natural resources, it is necessary to maximize the recycling of construction waste. Therefore, the research and application promotion of construction waste treatment and application technology is imperative. However, at present, due to the inherent damage of recycled aggregate and the high water absorption rate caused by the adsorption of a layer of old mortar on its surface, the strength, shrinkage and durability of recycled concrete are poorer than ordinary concrete. The earth limits its scope of use.
因此,本文在上述背景下,为了推广再生混凝土的利用,通过分析前期的研究成果,提出了一种新型的钢骨-钢管再生混凝土十字形截面组合柱,该种组合柱综合了钢筋混凝土十字形柱、钢管混凝土柱、钢骨混凝土柱、再生混凝土柱的优点,减轻了资源压力和环境负担,大大的拓宽了混凝土十字形柱的应用和发展空间,具有十分重要的研究意义。 Therefore, under the above background, in order to promote the utilization of recycled concrete, this paper proposes a new type of steel frame-steel tube recycled concrete cross-section composite column by analyzing the previous research results. The advantages of concrete-filled steel pipe columns, steel-reinforced concrete columns, and recycled concrete columns reduce resource pressure and environmental burden, and greatly broaden the application and development space of concrete cross-shaped columns, which has very important research significance.
发明内容 Contents of the invention
本发明的目的是提供一种钢骨-钢管再生混凝土十字形截面组合柱,这种新型组合柱不仅改善了普通钢筋混凝土十字形柱的受力性能,而且充分利用了废弃混凝土,做到了废物的有效利用,节约了资源,保护了环境。本发明通过以下技术方案实现:钢骨-钢管再生混凝土十字形截面组合柱的T形钢骨由钢板焊接而成,位于十字形柱的肢上,钢管位于柱的中心,试件制作时先将钢骨和钢管通过焊接或螺栓连接固定,然后绑扎钢筋骨架,支模,浇筑再生混凝土。其特征在于:位于十字形柱肢上的钢骨改善了肢部的受力性能;位于核心处的钢管提高了十字形柱的承载能力和延性;充分利用废弃建筑垃圾,形成再生混凝土,做到废物利用,节约能源、绿色环保。 The purpose of the present invention is to provide a steel frame-steel tube recycled concrete cross-section composite column. This new type of composite column not only improves the mechanical performance of ordinary reinforced concrete cross-shaped columns, but also makes full use of waste concrete, so as to achieve waste recycling. Effective use saves resources and protects the environment. The present invention is realized through the following technical solutions: the T-shaped steel frame of the steel frame-steel tube recycled concrete cross-section composite column is welded by steel plates, located on the limbs of the cross-shaped column, and the steel tube is located at the center of the column. The steel frame and steel pipe are fixed by welding or bolting, and then the steel frame is bound, the formwork is set up, and recycled concrete is poured. It is characterized in that: the steel frame on the cross-shaped column improves the mechanical performance of the limb; the steel pipe at the core improves the bearing capacity and ductility of the cross-shaped column; fully utilizes the waste construction waste to form recycled concrete, and achieves Waste utilization, energy saving, green environmental protection.
本发明的优点与效果是: Advantage and effect of the present invention are:
1.充分利用废弃建筑垃圾,形成再生混凝土,做到废物利用,节约能源、绿色环保; 1. Make full use of abandoned construction waste to form recycled concrete, realize waste utilization, save energy, and be green and environmentally friendly;
2.钢管位于纵横方向混凝土交叉部位的内部,受到外部混凝土的保护,具有良好的耐火、耐腐蚀性能; 2. The steel pipe is located inside the intersection of concrete in the vertical and horizontal directions, protected by the external concrete, and has good fire resistance and corrosion resistance;
3.钢管内混凝土处于三相受压状态,提高了柱子的极限承载力,为高强混凝土的应用提空了空间; 3. The concrete in the steel pipe is in a three-phase compression state, which improves the ultimate bearing capacity of the column and provides space for the application of high-strength concrete;
4.钢骨位于十字形柱的肢部,改善了肢部的受力性能; 4. The steel frame is located at the limb of the cross-shaped column, which improves the mechanical performance of the limb;
5.可以先施工钢骨、钢管,将钢骨、钢管在底部焊接或螺栓连接固定,然后绑扎纵筋和箍筋,形成骨架后浇注再生混凝土,从而形成叠合柱; 5. The steel frame and steel pipe can be constructed first, and the steel frame and steel pipe can be welded or bolted at the bottom, and then the longitudinal bars and stirrups can be tied to form a skeleton and pour recycled concrete to form a laminated column;
7.由于钢骨、钢管的存在改善了柱的延性,提高了柱的极限承载力,有利于地震区抗震设计; 7. Due to the presence of steel frames and steel pipes, the ductility of the column is improved, and the ultimate bearing capacity of the column is increased, which is beneficial to the seismic design of the earthquake zone;
8.拓宽了混凝土十字形柱的应用和发展空间,美化了建筑外观。 8. Broaden the application and development space of concrete cross-shaped columns, and beautify the appearance of the building.
附图说明 Description of drawings
图1是钢骨-钢管再生混凝土十字形截面组合柱的示意图。 Figure 1 is a schematic diagram of a steel frame-steel tube recycled concrete cross-section composite column.
图中:1为纵向钢筋,2为再生混凝土,3为钢管,4为箍筋,5为钢骨。 Among the figure: 1 is longitudinal reinforcement, 2 is recycled concrete, 3 is steel pipe, 4 is stirrup, 5 is steel frame.
具体实施方式 Detailed ways
钢骨-钢管再生混凝土十字形截面组合柱,由钢骨、钢管、钢筋骨架和混凝土组成,钢骨5由钢板焊接而成,钢骨5位于箍筋4围成的十字形柱的肢上,钢管3位于十字形柱的核心,混凝土2是再生混凝土,再生混凝土2位于钢管3的内外、箍4筋围成的十字形柱内。钢骨是由钢板焊接成T形。箍筋4围成的十字形柱的角上装有纵向钢筋1。 Steel frame-steel tube recycled concrete cross-section composite column is composed of steel frame, steel tube, steel frame and concrete. Steel frame 5 is welded by steel plate. The steel pipe 3 is located at the core of the cross-shaped column, the concrete 2 is recycled concrete, and the recycled concrete 2 is located inside and outside the steel pipe 3 and inside the cross-shaped column surrounded by hoops and 4 bars. The steel frame is welded into a T shape by steel plates. The corners of the cross-shaped column surrounded by the stirrups 4 are equipped with longitudinal steel bars 1 .
具体工艺如下: The specific process is as follows:
1. 按照规定将钢板焊接成钢骨; 1. Weld steel plates into steel frames according to regulations;
2. 将钢骨和钢管焊接或螺栓连接固定,并保持垂直或一定角度; 2. Fix the steel frame and steel pipe by welding or bolting, and keep it vertical or at a certain angle;
3. 绑扎钢筋骨架; 3. Binding steel skeleton;
4. 在钢筋骨架外侧支模板; 4. Support formwork on the outer side of the steel skeleton;
5. 将一定比例、一定尺寸的再生混凝土碎块与水泥等充分搅拌,形成再生混凝土; 5. Fully mix a certain proportion and a certain size of recycled concrete fragments with cement to form recycled concrete;
6. 浇注再生混凝土; 6. Pouring recycled concrete;
7. 定期养护; 7. Regular maintenance;
8. 到达规定养护日期后,拆模成型。 8. After the specified maintenance date is reached, the mold is demolished.
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Cited By (3)
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CN105544867A (en) * | 2015-12-21 | 2016-05-04 | 天津大学 | A steel-concrete composite special-shaped column |
WO2018069752A1 (en) | 2016-10-14 | 2018-04-19 | Arcelormittal | Steel reinforced concrete column |
CN114075858A (en) * | 2020-08-17 | 2022-02-22 | 河南理工大学 | A ten-shaped steel tube recycled concrete special-shaped column with perforated T-shaped rib and its method |
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