CN204983143U - End muscle precast concrete frame construction excels in - Google Patents
End muscle precast concrete frame construction excels in Download PDFInfo
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- CN204983143U CN204983143U CN201520724176.1U CN201520724176U CN204983143U CN 204983143 U CN204983143 U CN 204983143U CN 201520724176 U CN201520724176 U CN 201520724176U CN 204983143 U CN204983143 U CN 204983143U
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- 239000011178 precast concrete Substances 0.000 title claims description 18
- 238000010276 construction Methods 0.000 title description 7
- 210000003205 muscle Anatomy 0.000 title 1
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 50
- 239000010959 steel Substances 0.000 claims abstract description 50
- 239000004567 concrete Substances 0.000 claims abstract description 33
- 230000002787 reinforcement Effects 0.000 claims abstract description 16
- 239000011241 protective layer Substances 0.000 claims description 4
- 230000002500 effect on skin Effects 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000004215 skin function Effects 0.000 description 1
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Abstract
本实用新型公开了一种高强底筋预制混凝土框架结构,包括预制混凝土柱、预制混凝土梁、梁底部受力钢筋、U形键槽、芯梁架立筋、矩形密闭箍筋、芯梁和梁顶普通钢筋;所述预制混凝土梁的梁端留有U形键槽且梁底部受力钢筋采用高强钢筋,所述梁底部受力钢筋上方U形键槽范围内设置有芯梁架立筋,通过芯梁架立筋在U形键槽内增设环绕梁底部受力钢筋的矩形密闭箍筋,形成芯梁;所述梁底部受力钢筋伸出梁端,并向上弯起形成弯钩,伸出部分侧弯避开预制混凝土柱主筋,锚固于梁柱连接节点核心区内。本实用新型结构增强预制装配框架结构抗震性能,提高构件生产及现场节点安装的普适性,并且符合推广使用高强钢筋的大趋势。
The utility model discloses a prefabricated concrete frame structure with high-strength bottom reinforcement, which comprises a prefabricated concrete column, a prefabricated concrete beam, a stressed steel bar at the bottom of the beam, a U-shaped key groove, a core beam frame vertical reinforcement, a rectangular airtight stirrup, a core beam and a beam top Ordinary steel bar; the beam end of the prefabricated concrete beam has a U-shaped keyway and the stressed steel bar at the bottom of the beam adopts high-strength steel bars, and a core beam frame vertical bar is arranged within the range of the U-shaped keyway above the stressed steel bar at the bottom of the beam. In the U-shaped keyway, add rectangular closed stirrups around the stressed steel bar at the bottom of the beam to form a core beam; the stressed steel bar at the bottom of the beam protrudes from the end of the beam and bends upward to form a hook, and the protruding part bends sideways Avoid the main reinforcement of the prefabricated concrete column, and anchor in the core area of the beam-column connection node. The structure of the utility model enhances the anti-seismic performance of the prefabricated assembly frame structure, improves the universality of component production and on-site node installation, and conforms to the general trend of popularizing the use of high-strength steel bars.
Description
技术领域technical field
本实用新型涉及一种高强底筋预制混凝土框架结构,属于建筑工程混凝土框架结构技术领域。The utility model relates to a prefabricated concrete frame structure with high-strength bottom bars, belonging to the technical field of concrete frame structures in construction engineering.
背景技术Background technique
预制混凝土结构能大幅提高建造能力和建造速度,节省大量劳动力,保障了建造质量,并且有利于达到“四节一环保”的要求,在国家加大力度推行“建筑工业化、住宅产业化”,推广绿色建筑和绿色施工的背景下具有良好的发展前景。目前能够付诸应用的预制装配框架结构体系普遍存在着精度加工要求高、适用性不足、施工建造不便等问题,这使得预制装配框架结构应用优势并不明显。Prefabricated concrete structure can greatly improve the construction capacity and construction speed, save a lot of labor, ensure the construction quality, and help meet the requirements of "four festivals and one environmental protection". It has good development prospects in the context of green building and green construction. At present, the prefabricated assembly frame structure system that can be put into application generally has problems such as high precision processing requirements, insufficient applicability, and inconvenient construction, which makes the application advantages of prefabricated assembly frame structure not obvious.
实用新型内容Utility model content
本实用新型的目的在于克服现有预制混凝土框架结构规模化应用的瓶颈,提供一种高强底筋预制混凝土框架结构,该结构可降低对预制构件制造中梁内受力钢筋布置的精度要求,提高预制装配框架结构构件生产及现场节点安装的普适性,有效解决上述问题。The purpose of the utility model is to overcome the bottleneck of large-scale application of the existing precast concrete frame structure, and provide a precast concrete frame structure with high-strength bottom bars, which can reduce the precision requirements for the layout of the stressed steel bars in the beam in the manufacture of prefabricated components, and improve The universality of the production of prefabricated frame structural components and the installation of on-site nodes can effectively solve the above problems.
本实用新型采用的技术方案为:一种高强底筋预制混凝土框架结构,包括预制混凝土柱、预制混凝土梁、梁底部受力钢筋、U形键槽、芯梁架立筋、矩形密闭箍筋、芯梁和梁顶普通钢筋;The technical scheme adopted by the utility model is: a prefabricated concrete frame structure with high-strength bottom bars, including precast concrete columns, precast concrete beams, reinforced steel bars at the bottom of the beams, U-shaped key grooves, core beam frame vertical bars, rectangular airtight stirrups, core Ordinary reinforcement for beams and beam tops;
所述预制混凝土柱配置有竖向钢筋,所述预制混凝土梁搁置在预制混凝土柱的混凝土保护层上,形成梁柱连接节点;The precast concrete column is configured with vertical steel bars, and the precast concrete beam is placed on the concrete protective layer of the precast concrete column to form a beam-column connection node;
所述预制混凝土梁的梁端留有U形键槽且梁底部受力钢筋采用高强钢筋,所述梁端底部受力钢筋上方U形键槽范围内设置有芯梁架立筋,通过芯梁架立筋在U形键槽内增设环绕梁底部受力钢筋的矩形密闭箍筋,形成芯梁;The beam end of the prefabricated concrete beam has a U-shaped keyway and the stressed steel bar at the bottom of the beam adopts high-strength steel bars, and a core beam frame vertical bar is arranged in the range of the U-shaped keyway above the stressed steel bar at the bottom of the beam end, and the core beam is erected through the core beam. In the U-shaped keyway, a rectangular airtight stirrup surrounding the stressed steel bar at the bottom of the beam is added to form a core beam;
所述梁底部受力钢筋伸出梁端,并向上弯起形成弯钩,伸出部分侧弯避开预制混凝土柱主筋,锚固于梁柱连接节点核心区内;The stressed steel bar at the bottom of the beam protrudes from the beam end, and bends upward to form a hook, and the protruding part bends sideways to avoid the main reinforcement of the precast concrete column, and is anchored in the core area of the beam-column connection node;
所述预制混凝土梁安装梁顶普通钢筋,并连同整个梁柱连接节点区域现浇混凝土,形成装配整体式连接节点。The prefabricated concrete beam is installed with ordinary steel bars on the top of the beam, and cast-in-situ concrete together with the entire beam-column connection node area to form an assembled integral connection node.
作为优选,所述梁底部受力钢筋采用600MPa级高强钢筋,直径采取12mm到16mm,高强钢筋从槽底板上方伸出梁端一定长度,端部向上弯起形成弯钩,梁端高强钢筋可利用其柔软性从U形槽起始点开始作灵活弯曲,在节点安装过程可顺利避开柱筋锚入节点区内,方便了梁的预制和现场节点安装。As a preference, the stressed steel bar at the bottom of the beam adopts 600MPa grade high-strength steel bar, with a diameter of 12mm to 16mm. The high-strength steel bar extends from the top of the groove bottom plate to a certain length at the beam end, and the end is bent upward to form a hook. The high-strength steel bar at the beam end can be used Its softness starts to flexibly bend from the starting point of the U-shaped groove. During the node installation process, it can smoothly avoid the column reinforcement and anchor into the node area, which facilitates the prefabrication of the beam and the on-site node installation.
作为优选,所述梁底部受力钢筋至构件表皮之间的混凝土保护层内布置具有蒙皮作用的钢筋焊网,改善跨中裂缝开展状况。Preferably, a welded steel mesh with a skin effect is arranged in the concrete protection layer between the stressed steel bar at the bottom of the beam and the component skin, so as to improve the development of cracks in the mid-span.
作为优选,所述梁柱连接节点两边U形键槽和节点核心区的合理高度上放置附加直钢筋,加强了梁柱拼缝面处梁端的抗弯能力,使其在地震反复荷载下塑性铰实现外移。As a preference, an additional straight steel bar is placed on the reasonable height of the U-shaped keyway on both sides of the beam-column connection node and the core area of the node, which strengthens the bending resistance of the beam end at the joint surface of the beam-column, so that it can realize the plastic hinge under repeated earthquake loads. move out.
有益效果:(1)本实用新型采用高强钢筋作为下部受力钢筋的预制混凝土梁,可降低梁用钢量或减小梁截面,达到节约材料的目的;(2)预制梁端设置一定长度U形凹槽,槽内混凝土与节点混凝土整体浇筑,提高了梁柱接合面的抗剪力。另外,凹槽的设置,可增大高强筋的自由弯曲段长度,方便地利用小规格高强钢筋的柔软性进行空间交错弯折,彻底解决预制梁就位时不同方向梁底钢筋与柱筋易碰撞的施工难题;(3)梁顶钢筋的连续、节点混凝土的整体浇筑、梁键槽内芯梁部分的加强,实现强连接节点,可充分发挥和改善框架结构的抗震能力。Beneficial effects: (1) The utility model uses high-strength steel bars as the prefabricated concrete beams of the lower reinforced steel bars, which can reduce the amount of steel used in the beams or reduce the cross-section of the beams to achieve the purpose of saving materials; The groove, the concrete in the groove and the joint concrete are integrally poured, which improves the shear resistance of the beam-column joint surface. In addition, the setting of the groove can increase the length of the free bending section of the high-strength reinforcement, and it is convenient to use the softness of the small-sized high-strength reinforcement to perform interlaced bending in space. (3) Continuation of steel bars at the top of the beam, integral pouring of joint concrete, and reinforcement of the core beam part in the keyway of the beam, to achieve a strong connection node, which can fully exert and improve the seismic capacity of the frame structure.
附图说明Description of drawings
图1为本实用新型的预制混凝土梁示意图;Fig. 1 is the prefabricated concrete beam schematic diagram of the present utility model;
图2为图1的剖视图;Fig. 2 is the sectional view of Fig. 1;
图3为本实用新型的连接节点示意图;Fig. 3 is the connection node schematic diagram of the present utility model;
图4为图3的剖视图。FIG. 4 is a cross-sectional view of FIG. 3 .
具体实施方式detailed description
下面结合附图对本实用新型作进一步的说明。Below in conjunction with accompanying drawing, the utility model is further described.
如图1和2所示:高强底筋预制混凝土框架结构预制梁,两端设置U型键槽1,梁底部受力钢筋2采用具有一定柔性的12mm、14mm、16mm小规格600MPa级热处理带肋高强钢筋,在梁连接端伸出,向上弯起形成弯钩,在高强筋上部设置芯梁架立筋3,用于形成芯梁,在梁底受力主筋至构件表皮之间的混凝土保护层内布置具有蒙皮作用的钢筋焊网4,改善梁跨中部位开裂状况。As shown in Figures 1 and 2: prefabricated beams with high-strength bottom reinforcement prefabricated concrete frame structure, U-shaped key grooves 1 are arranged at both ends, and the stressed steel bars 2 at the bottom of the beam are made of 600MPa heat-treated ribbed high-strength small-sized 12mm, 14mm, 16mm with certain flexibility The steel bar protrudes from the beam connection end, bends upward to form a hook, and sets the core beam frame vertical bar 3 on the upper part of the high-strength bar to form the core beam, in the concrete protective layer between the stressed main bar at the bottom of the beam and the component skin Welded steel mesh 4 with skin function is arranged to improve the cracking condition in the mid-span of the beam.
如图3和4所示:高强底筋预制混凝土框架结构连接节点,配置了竖向钢筋的预制混凝土柱5安装就位后,将预制混凝土梁6吊装并临时搁置在预制混凝土柱5混凝土保护层上,梁端底部受力钢筋2根据现场柱竖向钢筋的实际位置,人工弯折形成交错布置,伸入节点区进行锚固,在梁段键槽内增设环绕高强筋的小型矩形封闭箍筋7,形成芯梁8,再于节点两边U形槽和节点核心区内一定高度上放附加直钢筋9,将梁顶普通钢筋10插入梁箍筋内,并绑扎固定,最后现场浇筑节点区混凝土11,形成预制装配整体式梁柱连接节点。As shown in Figures 3 and 4: the connection node of the precast concrete frame structure with high-strength bottom reinforcement, after the precast concrete column 5 equipped with vertical reinforcement is installed in place, the precast concrete beam 6 is hoisted and temporarily placed on the concrete protection layer of the precast concrete column 5 Above, the reinforced steel bars 2 at the bottom of the beam end are artificially bent to form a staggered arrangement according to the actual position of the vertical steel bars at the site, and extend into the node area for anchoring. A small rectangular closed stirrup 7 surrounding high-strength bars is added in the keyway of the beam section. Form the core beam 8, and then place additional straight steel bars 9 at a certain height in the U-shaped grooves on both sides of the node and in the core area of the node, insert the common steel bars 10 on the top of the beam into the stirrups of the beam, and bind and fix them, and finally pour the concrete 11 in the node area on site, Form prefabricated assembly integral beam-column connection nodes.
以上结合附图对本实用新型的实施方式做出详细说明,但本实用新型不局限于所描述的实施方式。对本领域的普通技术人员而言,在本实用新型的原理和技术思想的范围内,对这些实施方式进行实施方式进行多种变化、修改、替换和变形仍落入本实用新型的保护范围内。The embodiments of the utility model have been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the described embodiments. For those of ordinary skill in the art, within the scope of the principles and technical ideas of the present utility model, various changes, modifications, replacements and deformations of these embodiments still fall within the protection scope of the present utility model.
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105256891A (en) * | 2015-09-17 | 2016-01-20 | 东南大学 | Prefabricated concrete frame structure with high-strength bottom bars |
CN106049675A (en) * | 2016-07-26 | 2016-10-26 | 沈阳建筑大学建筑设计研究院 | Docking connection construction of prefabricated assembly concrete superposed beams |
CN106812244A (en) * | 2017-02-14 | 2017-06-09 | 杨志业 | The preparation method of the continuous superposed floor of precast beam, prefabricated PC and superstructure |
CN108060781A (en) * | 2017-11-24 | 2018-05-22 | 永州远大建筑工业有限公司 | More beam connection structures and its construction method for hanging |
CN108179809A (en) * | 2018-03-15 | 2018-06-19 | 莆田学院 | The connection method of assembled steel tendon concrete frame structure component |
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- 2015-09-17 CN CN201520724176.1U patent/CN204983143U/en not_active Expired - Fee Related
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105256891A (en) * | 2015-09-17 | 2016-01-20 | 东南大学 | Prefabricated concrete frame structure with high-strength bottom bars |
CN105256891B (en) * | 2015-09-17 | 2018-02-06 | 东南大学 | High-strength bottom muscle Precast Concrete Frame |
CN106049675A (en) * | 2016-07-26 | 2016-10-26 | 沈阳建筑大学建筑设计研究院 | Docking connection construction of prefabricated assembly concrete superposed beams |
CN106812244A (en) * | 2017-02-14 | 2017-06-09 | 杨志业 | The preparation method of the continuous superposed floor of precast beam, prefabricated PC and superstructure |
CN108060781A (en) * | 2017-11-24 | 2018-05-22 | 永州远大建筑工业有限公司 | More beam connection structures and its construction method for hanging |
CN108060781B (en) * | 2017-11-24 | 2020-02-04 | 永州远大建筑工业有限公司 | Multi-beam connecting structure and hoisting construction method thereof |
CN108179809A (en) * | 2018-03-15 | 2018-06-19 | 莆田学院 | The connection method of assembled steel tendon concrete frame structure component |
CN108716246A (en) * | 2018-07-06 | 2018-10-30 | 沈阳三建筑设计研究有限公司 | Frame structure system |
CN108999282A (en) * | 2018-09-06 | 2018-12-14 | 苏州古镇联盟建筑设计有限公司 | One kind turning over Cantilever Beams bean column node construction and its construction method |
CN108999282B (en) * | 2018-09-06 | 2020-12-15 | 苏州古镇联盟建筑设计有限公司 | Upturning cantilever beam-column joint structure and construction method thereof |
CN109680807A (en) * | 2019-01-25 | 2019-04-26 | 华汇工程设计集团股份有限公司 | Anchor structure and method of the pre-tensioning system Prefabricated superposed beam steel strand wires in bean column node |
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