CN104481031A - Assembly connection structure and method of coupling beams of shear walls of assembly concrete frame shear structure - Google Patents
Assembly connection structure and method of coupling beams of shear walls of assembly concrete frame shear structure Download PDFInfo
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Abstract
本发明涉及装配式混凝土结构领域，具体为一种装配式混凝土框剪结构剪力墙连梁的拼装连接结构及拼装连接方法。在预制连梁和预制剪力墙之间或带有半跨连梁的剪力墙的连梁之间设置灌浆缝、等效钢筋进行梁墙或梁梁连接。预制连梁、预制剪力墙或带有半跨连梁的剪力墙的连梁预留孔洞，孔洞周围预先布置螺旋箍筋，等效钢筋贯穿于上述预留孔洞，通过灌注微膨胀砂浆填满上述预留水平孔洞及梁墙或梁梁之间的灌浆缝，使预制连梁、预制剪力墙及等效钢筋或带有半跨连梁的剪力墙连梁及等效钢筋固结为一体，实现预制连梁和预制剪力墙或带有半跨连梁的剪力墙连梁的连接。本发明在很大程度上降低工程造价，同时在很大程度上减少现场浇注混凝土湿作业。
The invention relates to the field of assembled concrete structures, in particular to an assembled connection structure and an assembled connection method of a shear wall connecting beam of an assembled concrete frame-shear structure. Set grouting joints and equivalent steel bars between prefabricated coupling beams and prefabricated shear walls or between coupling beams of shear walls with half-span coupling beams for beam-to-wall or beam-to-beam connection. Prefabricated coupling beams, prefabricated shear walls or shear walls with half-span coupling beams have holes reserved in coupling beams, spiral stirrups are pre-arranged around the holes, equivalent steel bars run through the above-mentioned reserved holes, and are filled with micro-expansion mortar. Fill the above-mentioned reserved horizontal holes and grouting joints between beams, walls or beams to consolidate prefabricated coupling beams, prefabricated shear walls and equivalent steel bars or shear wall coupling beams with half-span coupling beams and equivalent steel bars As a whole, it realizes the connection of prefabricated coupling beams and prefabricated shear walls or shear wall coupling beams with half-span coupling beams. The invention greatly reduces the engineering cost and at the same time greatly reduces the wet work of pouring concrete on site.
Description
【技术领域】【Technical field】
本发明涉及装配式混凝土结构领域，具体为一种装配式混凝土框剪结构剪力墙连梁的拼装连接结构及拼装连接方法，特别是由预制连梁、预制墙或预制预制带梁墙构成的装配式混凝土框剪结构中带连梁剪力墙的拆分拼装体系，构件连接构造，由这种拼装体系和连接构造建造的结构物，以及拼装连接方法。The invention relates to the field of prefabricated concrete structures, in particular to an assembling connection structure and an assembling connection method of a shear wall connecting beam of a prefabricated concrete frame-shear structure, especially a prefabricated connecting beam, a prefabricated wall or a prefabricated prefabricated wall with beams The disassembly and assembly system of the shear wall with coupling beams in the prefabricated concrete frame-shear structure, the component connection structure, the structures built by this assembly system and connection structure, and the assembly connection method.
【背景技术】【Background technique】
框架-剪力墙结构，简称为框剪结构，主要结构是框架和剪力墙，其中框架由梁柱构成，剪力墙布置于部分框架内，剪力墙用于增加整体结构的抗水平荷载能力。框剪结构适用于平面或竖向布置繁杂、水平荷载大的高层建筑。装配式混凝土结构的现有技术多限于纯框架结构和纯剪力墙结构，装配式混凝土框剪结构的技术较少，仅有的专利“装配式混凝土框架-剪力墙拼装连接结构及拼装连接方法”，也未涉及其中剪力墙连梁的结构拆分拼装构造及连接方法。Frame-shear wall structure, referred to as frame-shear structure, the main structure is frame and shear wall, in which the frame is composed of beams and columns, and the shear wall is arranged in part of the frame, and the shear wall is used to increase the horizontal load resistance of the overall structure ability. The frame-shear structure is suitable for high-rise buildings with complex plane or vertical layout and large horizontal load. The existing technologies of prefabricated concrete structures are mostly limited to pure frame structures and pure shear wall structures, and there are few technologies for prefabricated concrete frame and shear structures. The only patent "fabricated concrete frame-shear wall assembly connection structure and assembly connection method", and did not involve the structural disassembly and assembly construction and connection method of the shear wall coupling beam.
由于框剪结构中剪力墙的连梁厚度较小，与剪力墙同厚，没有足够的截面面积放置套筒，同时由于框剪结构中框架梁、框架柱及剪力墙的存在，剪力墙连梁的装配空间十分有限，因此适用于框架梁柱和梁梁连接的套筒连接方法、适用于框架梁与剪力墙连接的插筋连接方法，适用于上下层剪力墙与剪力墙连接的套筒连接方法等都不适用于该种连接。迄今，对于框剪结构中剪力墙中连梁的拼装连接结构及拼装连接方法尚无行之有效的解决方法，混凝土框剪结构中剪力墙的连梁主要是靠全现浇工法来建造。现浇的工法，混凝土湿作业量大，建筑质量难以保证，工期长，不利于实现节能减排。Because the thickness of the connecting beam of the shear wall in the frame-shear structure is small, which is the same thickness as the shear wall, there is not enough cross-sectional area to place the sleeve. The assembly space of the force wall coupling beam is very limited, so it is suitable for the sleeve connection method of frame beam-column and beam-beam connection, the insertion bar connection method for frame beam and shear wall connection, and the upper and lower layer shear wall and shear wall connection method. The sleeve connection method of the force wall connection is not suitable for this kind of connection. So far, there is no effective solution for the assembled connection structure and assembled connection method of the shear wall in the frame-shear structure. The connection beam of the shear wall in the concrete frame-shear structure is mainly constructed by the all-in-situ construction method . The cast-in-place construction method requires a large amount of concrete wet work, it is difficult to guarantee the construction quality, and the construction period is long, which is not conducive to realizing energy saving and emission reduction.
【发明内容】【Content of invention】
本发明的目的在于提供一种装配式混凝土框剪结构剪力墙连梁的拼装连接结构及拼装连接方法，通过采用合理有效的拆分拼装体系和构件连接方式，在很大程度上降低工程造价，减少现场浇注混凝土湿作业，提高建筑质量，缩短工期，实现节能减排。The purpose of the present invention is to provide an assembled connection structure and an assembled connection method for a shear wall coupling beam of a prefabricated concrete frame-shear structure. By adopting a reasonable and effective disassembly and assembly system and component connection methods, the construction cost can be reduced to a large extent , reduce the wet work of pouring concrete on site, improve the quality of the building, shorten the construction period, and achieve energy saving and emission reduction.
本发明的技术方案：Technical scheme of the present invention:
一种装配式混凝土框剪结构剪力墙连梁的拼装连接结构，由预制剪力墙中连梁、预制剪力墙或带有半跨连梁的剪力墙的连梁构成结构拆分拼装体系，其中：预制剪力墙中连梁，以下简称预制连梁；预制剪力墙，以下简称预制墙；预制带有半跨连梁的剪力墙，以下简称预制带梁墙；该拼装连接结构为以下两种结构形式之一：An assembled connection structure for shear wall coupling beams of prefabricated concrete frame-shear structures, which is composed of prefabricated shear wall mid-coupling beams, prefabricated shear walls or shear wall coupling beams with half-span coupling beams. system, in which: prefabricated shear wall middle coupling beam, hereinafter referred to as prefabricated coupling beam; prefabricated shear wall, hereinafter referred to as precast wall; prefabricated shear wall with half-span coupling beam, hereinafter referred to as prefabricated beam wall; The structure is one of the following two structural forms:
(1)在连梁的两端与剪力墙连接位置拆分，分别制作预制连梁和与预制连梁梁端连接的预制墙，与一根连梁连接的预制墙共两片；预制连梁和预制墙构件内预留孔洞，孔洞周围设置螺旋箍筋，孔洞内设置等效钢筋，通过向预制连梁和预制墙预留孔洞及灌浆缝内灌注微膨胀砂浆，使预制连梁、预制墙及等效钢筋连接为整体；(1) Separate the two ends of the coupling beam from the connection position of the shear wall, and make the prefabricated coupling beam and the prefabricated wall connected to the beam end of the prefabricated coupling beam respectively. There are two prefabricated walls connected with a coupling beam; the prefabricated coupling beam Holes are reserved in beams and prefabricated wall components, spiral stirrups are set around the holes, and equivalent steel bars are set in the holes. The wall and equivalent steel bars are connected as a whole;
(2)在连梁的跨中位置拆分，拆分后形成两片预制带有半跨连梁的剪力墙，即预制带梁墙；预制带梁墙中，连梁内预留孔洞，孔洞周围设置螺旋箍筋，孔洞内设置等效钢筋，通过向预制带梁墙中预留孔洞及灌浆缝内灌注微膨胀砂浆，使预制带梁墙连接为整体。(2) Split at the mid-span position of the coupling beam, and form two prefabricated shear walls with half-span coupling beams after splitting, that is, the prefabricated belt beam wall; in the prefabricated belt beam wall, holes are reserved in the coupling beam, Spiral stirrups are set around the hole, and equivalent steel bars are set in the hole. Micro-expansion mortar is poured into the reserved holes and grouting joints in the prefabricated beam wall to make the prefabricated beam wall connected as a whole.
所述的装配式混凝土框剪结构剪力墙连梁的拼装连接结构，预制连梁、预制墙和预制带梁墙的连梁中预留孔洞，预制连梁和一片预制带梁墙中孔洞的长度大于钢筋锚固长度的2倍且小于钢筋锚固长度加灌浆缝长度，孔洞周围布有螺旋箍筋，孔洞用于放置等效钢筋，螺旋箍筋用于支撑孔洞并约束内部灌注的微膨胀砂浆。The assembled connection structure of the shear wall coupling beam of the prefabricated concrete frame-shear structure, holes reserved in the coupling beams of the prefabricated coupling beams, prefabricated walls and prefabricated beam walls, and holes in the prefabricated coupling beams and a prefabricated beam wall The length is greater than twice the anchorage length of the steel bar and less than the anchorage length of the steel bar plus the length of the grouting joint. There are spiral stirrups around the hole. The hole is used to place equivalent steel bars. The spiral stirrup is used to support the hole and restrain the micro-expansion mortar poured inside.
所述的装配式混凝土框剪结构剪力墙连梁的拼装连接结构，等效钢筋端部焊有半螺帽，半螺帽保证灌注微膨胀砂浆时，与半螺帽连接的钢筋位于孔洞中心，同时半螺帽使等效钢筋更好的锚固于预制构件中。In the assembled connection structure of the shear wall coupling beam of the prefabricated concrete frame-shear structure, the end of the equivalent steel bar is welded with a half nut, and the half nut ensures that when the micro-expansion mortar is poured, the steel bar connected with the half nut is located in the center of the hole , at the same time, the half nut makes the equivalent reinforcement better anchored in the prefabricated components.
的所述装配式混凝土框剪结构剪力墙连梁的拼装连接结构，等效钢筋端部半螺帽的直径要小于孔洞的直径，以保证等效钢筋在孔洞内自由移动，其中半螺帽为整个螺帽沿直径方向切开，对称焊接于等效钢筋的端部，灌注微膨胀砂浆时，微膨胀砂浆流过半螺帽，充满全部孔洞。In the assembled connection structure of the prefabricated concrete frame-shear structure shear wall coupling beam, the diameter of the half nut at the end of the equivalent steel bar is smaller than the diameter of the hole, so as to ensure that the equivalent steel bar can move freely in the hole, and the half nut at the end The entire nut is cut along the diameter direction and welded symmetrically to the end of the equivalent steel bar. When the micro-expansion mortar is poured, the micro-expansion mortar flows through the half nut and fills all the holes.
所述的装配式混凝土框剪结构剪力墙连梁的拼装连接结构，在所述预制连梁梁端及预制墙处设置横向拆分，并在该处通过等效钢筋对二者进行连接，通过在灌浆缝及预制连梁和预制墙预留孔洞内灌注微膨胀砂浆，使预制连梁和预制墙连接为整体。In the assembled connection structure of the shear wall coupling beam of the prefabricated concrete frame-shear structure, horizontal splitting is arranged at the beam end of the prefabricated coupling beam and the prefabricated wall, and the two are connected by equivalent steel bars at this place, The prefabricated coupling beam and the prefabricated wall are connected as a whole by pouring micro-expansion mortar into the grouting joints and the reserved holes of the prefabricated coupling beam and the prefabricated wall.
所述的装配式混凝土框剪结构剪力墙连梁的拼装连接结构，在所述预制带梁墙的连梁处设置横向拆分，并在该处通过等效钢筋对二者进行连接，通过在灌浆缝及预制带梁墙的连梁孔洞内灌注微膨胀砂浆，使两片预制带梁墙连接为整体。In the assembled connection structure of the prefabricated concrete frame-shear structure shear wall connecting beam, a horizontal split is set at the connecting beam of the prefabricated beam wall, and the two are connected by equivalent steel bars at this place. The micro-expansion mortar is poured into the grouting joints and the connecting beam holes of the prefabricated beam wall, so that the two prefabricated beam walls are connected as a whole.
所述的装配式混凝土框剪结构剪力墙连梁的拼装连接结构，预留孔洞的孔直径大于等效钢筋直径，以保证在孔洞内灌注足够的微膨胀砂浆，使其有效的粘接等效钢筋和孔洞壁。In the assembled connection structure of the prefabricated concrete frame-shear structure shear wall coupling beam, the hole diameter of the reserved hole is larger than the equivalent steel bar diameter, so as to ensure that enough micro-expansion mortar is poured into the hole, so that it can be effectively bonded, etc. effective reinforcement and hole walls.
使用任何一项上述的装配式混凝土框剪结构剪力墙连梁的拼装连接结构的框架-剪力墙结构物。A frame-shear wall structure of an assembled connection structure using any one of the above-mentioned prefabricated concrete frame-shear structure shear wall coupling beams.
一种装配式混凝土框剪结构剪力墙连梁的拼装连接方法，包括如下步骤：A method for assembling and connecting shear wall coupling beams of a prefabricated concrete frame-shear structure, comprising the following steps:
第一步，选用外直径大于等效钢筋直径的成孔钢管，在成孔钢管壁缠绕螺旋箍筋，然后将缠有螺旋箍筋的成孔钢管预埋于预制连梁、预制墙或预制带梁墙连梁的预定位置；The first step is to select a hole-forming steel pipe with an outer diameter larger than the equivalent steel bar diameter, wrap spiral stirrups on the wall of the hole-forming steel pipe, and then pre-embed the hole-forming steel pipe wrapped with spiral stirrups in prefabricated connecting beams, prefabricated walls or prefabricated belts Predetermined positions of beams, walls and beams;
第二步，浇筑预制连梁、预制墙或预制带梁墙，待混凝土刚刚凝固后，拔出成孔钢管，形成带孔洞并且孔洞周围留有螺旋箍筋的预制连梁、预制墙或预制带梁墙；The second step is to pour prefabricated coupling beams, prefabricated walls or prefabricated belt beam walls. After the concrete has just solidified, pull out the hole-forming steel pipes to form prefabricated coupling beams, prefabricated walls or prefabricated belts with holes and spiral stirrups around the holes. beam wall;
第三步，预制连梁和预制墙的拼接，将等效钢筋放入预制连梁的孔洞，将预制连梁和预制墙的孔洞对位，预制连梁梁端和预制墙间留有灌浆缝，对位完成后，将等效钢筋拔出，并伸入对应预制墙中预留孔洞内，然后在灌浆缝的周围布置U型模板，U型模板周围通过玻璃胶，与预制连梁和预制墙密封；The third step is the splicing of prefabricated coupling beams and prefabricated walls. Put equivalent steel bars into the holes of prefabricated coupling beams, align the holes of prefabricated coupling beams and prefabricated walls, and leave grouting joints between the beam ends of prefabricated coupling beams and prefabricated walls. , after the alignment is completed, pull out the equivalent steel bars and extend them into the reserved holes in the corresponding prefabricated walls, then arrange U-shaped formwork around the grouting joints, and pass glass glue around the U-shaped formwork to connect with prefabricated connecting beams and prefabricated wall seal;
预制带梁墙连梁和预制带梁墙连梁的拼接方法与预制连梁和预制墙的拼接方法相同；The splicing method of prefabricated wall coupling beams with beams and prefabricated wall coupling beams with beams is the same as the splicing method of prefabricated coupling beams and prefabricated walls;
第四步，同时从预制连梁和预制墙，或预制带梁墙两侧的注浆管内灌注微膨胀砂浆，直至微膨胀砂浆充满预制构件的预留孔洞及灌浆缝的U型模板；The fourth step is to pour micro-expansion mortar into the grouting pipes on both sides of the prefabricated connecting beam and prefabricated wall, or the prefabricated beam wall at the same time, until the micro-expansion mortar fills the reserved holes of the prefabricated components and the U-shaped formwork of the grouting joint;
第五步，待微膨胀砂浆凝固后，拆除U型模板，完成预制连梁与预制墙或预制带梁墙与预制带梁墙的拼接；The fifth step is to remove the U-shaped formwork after the micro-expansion mortar is solidified, and complete the splicing of prefabricated coupling beams and prefabricated walls or prefabricated beam walls and prefabricated beam walls;
重复上述五个步骤，完成装配式混凝土框剪结构中剪力墙连梁的拼装连接。Repeat the above five steps to complete the assembly connection of the shear wall coupling beam in the prefabricated concrete frame-shear structure.
所述的装配式混凝土框剪结构剪力墙连梁的拼装连接方法，在进行预制连梁和预制墙的拼接或预制带梁墙和预制带梁墙的拼接时，在所述的第三至四步先将等效钢筋放入预制连梁或预制带梁墙的的孔洞，并在孔端留出不小于2cm的端头，然后将预制连梁和预制墙的孔洞对位，预制连梁梁端和预制墙间留有灌浆缝，对位完成后，将等效钢筋拔出，并伸入对应的预制墙或预制带梁墙的预留孔洞内，然后在灌浆缝周围布置U型模板，U型模板周围通过玻璃胶，与预制连梁和预制墙或预制带梁墙的连梁密封，最后在孔洞和U型模板内灌注微膨胀砂浆。In the method for assembling and connecting the shear wall coupling beams of the prefabricated concrete frame-shear structure, when splicing the prefabricated coupling beams and the prefabricated walls or the prefabricated beam walls and the prefabricated beam walls, in the third to Four steps: put the equivalent steel bar into the hole of the prefabricated coupling beam or the prefabricated beam wall, and leave an end of not less than 2cm at the end of the hole, and then align the holes of the prefabricated coupling beam and the prefabricated wall, and prefabricated the coupling beam There is a grouting joint between the beam end and the prefabricated wall. After the alignment is completed, pull out the equivalent steel bar and extend it into the corresponding prefabricated wall or the prefabricated beam wall. Then arrange U-shaped formwork around the grouting joint , the U-shaped formwork is sealed with glass glue around the prefabricated connecting beams and prefabricated walls or the connecting beams of prefabricated beam walls, and finally micro-expansion mortar is poured into the holes and U-shaped formwork.
本发明的优点及有益效果是：Advantage of the present invention and beneficial effect are:
本发明由预制连梁，预制墙或预制带梁墙构成装配式混凝土框剪结构中，带连梁剪力墙中连梁结构的拆分拼装体系。预制连梁，预制墙或预制带梁墙中带有孔洞，孔洞周围布置有螺旋箍筋。当装配式混凝土框剪结构中剪力墙的连梁较长时，在连梁的两端与剪力墙连接位置拆分，分别制作预制连梁和与预制连梁梁端连接的预制墙(两片)，构件连接方法是：在预制连梁的预留孔洞中置入等效钢筋，并在孔端留出不小于2cm的端头，将预制连梁和预制墙的孔洞对位，预制连梁梁端和预制墙间留有灌浆缝，将等效钢筋拔出，并伸入对应的预制墙的预留孔洞内，然后在灌浆缝的周围布置U型模板，U型模板周围通过玻璃胶，与预制连梁和预制墙密封，最后在孔洞和U型模板内灌注微膨胀砂浆，待膨胀砂浆固结后，拆除U型模板，使预制连梁和预制墙连接为整体。当装配式混凝土框剪结构中剪力墙的连梁较短时，在连梁的跨中位置拆分，拆分后形成两片预制带梁墙，其连接方法同上。The invention comprises a prefabricated connecting beam, a prefabricated wall or a prefabricated wall with a beam to form a dismantling and assembling system of the connecting beam structure in the shear wall with the connecting beam in the prefabricated concrete frame-shear structure. There are holes in the prefabricated connecting beams, prefabricated walls or prefabricated beam walls, and spiral stirrups are arranged around the holes. When the coupling beam of the shear wall in the prefabricated concrete frame-shear structure is long, the two ends of the coupling beam are split at the connection position with the shear wall, and the prefabricated coupling beam and the prefabricated wall connected with the beam end of the prefabricated coupling beam are respectively made ( Two pieces), the component connection method is: put equivalent steel bars in the reserved holes of the prefabricated coupling beams, and leave no less than 2cm ends at the ends of the holes, align the holes of the prefabricated coupling beams and prefabricated walls, and prefabricated There is a grouting joint between the beam end of the coupling beam and the prefabricated wall, pull out the equivalent steel bar, and extend it into the corresponding reserved hole of the prefabricated wall, and then arrange a U-shaped formwork around the grouting joint, and pass the glass around the U-shaped formwork Glue, seal with prefabricated coupling beams and prefabricated walls, and finally pour micro-expansion mortar into holes and U-shaped formwork. After the expansion mortar is solidified, remove U-shaped formwork to connect prefabricated coupling beams and prefabricated walls as a whole. When the coupling beam of the shear wall in the prefabricated concrete frame-shear structure is short, it is split at the mid-span position of the coupling beam, and after splitting, two prefabricated beam walls are formed, and the connection method is the same as above.
本发明提出的拆分拼装结构和构件连接方法具有以下特点：The disassembly and assembly structure and component connection method proposed by the present invention have the following characteristics:
①各构件拆分位置合理，便于构件制作和运输；②构件对称或接近对称，重量合理，便于吊装安装；③等效钢筋可预先至于预制连梁或预制带梁墙的预留孔洞中，最大限度的减少了装配空间；④等效钢筋端部焊有半螺母，预留孔洞周围布有螺旋箍筋，二者间隙及灌浆缝采用微膨胀砂浆，保证了连接的可靠；⑤灌浆可在楼板上操作，操作方便，连接效率高；⑥将连梁中按计算配置钢筋面积集中为单根粗直径钢筋配置在连梁中线上，即满足规范构造要求，又减少钢筋接头，便于施工；⑦预制构件中预留孔洞周围布置螺旋箍筋而非套筒，在很大程度上降低了装配成本；⑧预制构件间的灌浆缝很小，现场湿作业少，装配率高。①The dismantling position of each component is reasonable, which is convenient for component fabrication and transportation; ②The components are symmetrical or close to symmetrical, and the weight is reasonable, which is convenient for hoisting and installation; The assembly space is reduced to a minimum; ④ half nuts are welded at the end of the equivalent steel bars, and spiral stirrups are arranged around the reserved holes. It is easy to operate and high in connection efficiency; ⑥ Concentrate the area of steel bars configured according to the calculation in the coupling beam into a single thick-diameter steel bar and arrange it on the center line of the coupling beam, which not only meets the structural requirements of the code, but also reduces the number of steel joints, which is convenient for construction; ⑦Prefabricated Arrange spiral stirrups instead of sleeves around the reserved holes in the components, which greatly reduces the assembly cost; ⑧The grouting joints between prefabricated components are small, there is less wet work on site, and the assembly rate is high.
【附图说明】【Description of drawings】
图1A-图1F：本发明装配式混凝土框剪结构中剪力墙连梁的第一种拆分拼装连接(在连梁两端拆分拼装连接)构造图。其中，图1A为拆分的立面主视图；图1B为拼装的立面主视图；图1C为预制墙等轴测三维图；图1D为图1A中Ⅰ-Ⅰ剖面图；图1E为预制连梁等轴测三维图；图1F为图1A中Ⅱ-Ⅱ剖面图。Fig. 1A-Fig. 1F: Structural diagrams of the first split and assembled connection of the shear wall coupling beam in the fabricated concrete frame-shear structure of the present invention (split and assembled connection at both ends of the coupling beam). Among them, Figure 1A is the front view of the split facade; Figure 1B is the front view of the assembled facade; Figure 1C is the isometric three-dimensional view of the prefabricated wall; Isometric three-dimensional view of the connecting beam; Fig. 1F is the section view of II-II in Fig. 1A.
图2A-图2F：本发明装配式混凝土框剪结构中剪力墙连梁第二种拆分拼装连接(在连梁跨中拆分拼装连接)构造图。其中，图2A为拆分的立面主视图；图2B为拼装的立面主视图；图2C为预制带梁墙Ⅰ等轴测三维图；图2D为图2A中Ⅰ-Ⅰ剖面图；图2E为预制带梁墙Ⅱ等轴测三维图；图2F为图2A中Ⅱ-Ⅱ剖面图。Fig. 2A-Fig. 2F: Structural diagrams of the second split and assembled connection of the shear wall coupling beam in the fabricated concrete frame-shear structure of the present invention (split and assembled connection in the mid-span of the coupling beam). Among them, Figure 2A is the front view of the split facade; Figure 2B is the front view of the assembled facade; Figure 2C is the isometric three-dimensional view of the prefabricated beam wall I; Figure 2D is the section view of I-I in Figure 2A; 2E is an isometric three-dimensional view of prefabricated beam wall II; FIG. 2F is a cross-sectional view of II-II in FIG. 2A.
图3(a)-(b)：图1A和图2A中的等效钢筋三维图立体图。其中，(a)图为半螺帽；(b)图为等效钢筋与半螺帽组合。Figure 3(a)-(b): Three-dimensional perspective view of the equivalent steel bar in Figure 1A and Figure 2A. Among them, (a) picture shows half nut; (b) picture shows the combination of equivalent steel bar and half nut.
图4(a)-(c)：施工中用于成孔的钢管及绕在钢管上的螺旋箍筋三维立体图。其中，(a)图为成孔钢管与螺旋箍筋组合；(b)图为成孔钢管；(c)图为螺旋箍筋。Figure 4(a)-(c): Three-dimensional views of the steel pipe used for forming holes and the spiral stirrup wound on the steel pipe during construction. Among them, (a) picture shows the combination of perforated steel pipe and spiral stirrup; (b) picture shows perforated steel tube; (c) picture shows spiral stirrup.
图5：用于浇筑灌浆缝的U型模板三维立体图。Figure 5: A three-dimensional perspective view of a U-shaped formwork used for pouring grouting joints.
图中：In the picture:
①框剪结构中预制剪力墙(简称预制墙)；②框剪结构中预制剪力墙中的连梁(简称预制连梁)；③灌浆缝；④在连梁跨中拆分的带半跨连梁的剪力墙Ⅰ(简称预制带梁墙Ⅰ)；⑤在连梁跨中拆分的带半跨连梁的剪力墙Ⅱ(简称预制带梁墙Ⅱ)；⑥U型模板。①The prefabricated shear wall in the frame-shear structure (referred to as the prefabricated wall); ②The coupling beam in the prefabricated shear wall in the frame-shear structure (abbreviated as the prefabricated coupling beam); ③The grouting joint; Shear wall Ⅰ with span coupling beam (referred to as prefabricated beam wall Ⅰ); ⑤ shear wall Ⅱ with half-span coupling beam split in the middle of coupling beam span (abbreviated as prefabricated beam wall Ⅱ); ⑥ U-shaped formwork.
1螺旋箍筋；2注浆管；3预制墙中预留孔洞；4预制连梁中预留孔洞；5等效钢筋；6半螺帽；7微膨胀砂浆；8预制带梁墙Ⅰ中预留孔洞；9预制带梁墙Ⅱ中预留孔洞；10成孔钢管。1 Spiral stirrup; 2 Grouting pipe; 3 Reserved holes in prefabricated walls; 4 Reserved holes in prefabricated coupling beams; 5 Equivalent steel bars; 6 Half nuts; Holes are reserved; 9. Holes are reserved in the prefabricated beam wall II; 10. Hole-forming steel pipes.
【具体实施方式】【Detailed ways】
本发明装配式混凝土框剪结构中剪力墙中连梁的拼装连接结构及拼装连接方法，是中国发明专利申请(装配式混凝土框架-剪力墙拆分拼装结构和拼装连接方法，公开号CN 102900168A)的补充。在预制连梁和预制剪力墙之间(适用于连梁较长，在梁端部拆分拼装的工况)或带有半跨连梁的剪力墙的连梁之间(适用于连梁较短，在连梁跨中拆分拼装的工况)设置灌浆缝、等效钢筋进行梁墙或梁梁连接。预制连梁、预制剪力墙或带有半跨连梁的剪力墙的连梁预留孔洞，孔洞周围预先布置螺旋箍筋，等效钢筋贯穿于上述预留孔洞，通过灌注微膨胀砂浆(保证等效钢筋与预留孔洞之间紧密接触)填满上述预留水平孔洞及梁墙或梁梁之间的灌浆缝，使预制连梁、预制剪力墙及等效钢筋或带有半跨连梁的剪力墙连梁及等效钢筋固结为一体，实现预制连梁和预制剪力墙或带有半跨连梁的剪力墙连梁的连接。本发明预留孔洞周围采用螺旋箍筋而非套筒，在很大程度上降低了工程造价，同时本发明也在很大程度上减少现场浇注混凝土湿作业，提高建筑质量，缩短工期，实现节能减排。The assembly connection structure and assembly connection method of the connecting beam in the shear wall in the prefabricated concrete frame-shear structure of the present invention is a Chinese invention patent application (prefabricated concrete frame-shear wall disassembly and assembly structure and assembly connection method, publication number CN 102900168A) supplement. Between the prefabricated connecting beam and the prefabricated shear wall (applicable to the condition that the connecting beam is long and assembled at the end of the beam) or between the connecting beam of the shear wall with a half-span connecting beam (applicable to the connecting beam The beam is short, and the working condition of disassembling and assembling in the connecting beam span) set grouting joints and equivalent steel bars for beam-wall or beam-beam connection. Prefabricated coupling beams, prefabricated shear walls, or coupling beams with half-span coupling beams have holes reserved, and spiral stirrups are pre-arranged around the holes, and equivalent steel bars run through the above-mentioned reserved holes. Micro-expansion mortar ( Ensure the close contact between the equivalent reinforcement and the reserved holes) fill the above-mentioned reserved horizontal holes and the grouting joints between beams, walls or beams, so that prefabricated coupling beams, prefabricated shear walls and equivalent reinforcements or with half-span The shear wall coupling beam of the coupling beam and the equivalent steel bar are consolidated into one, realizing the connection of the prefabricated coupling beam and the prefabricated shear wall or the shear wall coupling beam with a half-span coupling beam. The present invention adopts spiral stirrups instead of sleeves around the reserved holes, which greatly reduces the construction cost. At the same time, the present invention also greatly reduces the wet operation of pouring concrete on site, improves the construction quality, shortens the construction period, and realizes energy saving. emission reduction.
如图1至图5所示，本发明装配式混凝土框剪结构剪力墙连梁拆分拼装连接构造及拼装连接方法，包括两种具体实施方式，具体如下：As shown in Figures 1 to 5, the split and assembled connection structure and assembled connection method of the shear wall coupling beam of the assembled concrete frame-shear structure of the present invention include two specific implementation modes, which are as follows:
(一)当装配式混凝土框剪结构中剪力墙的连梁较长(连梁长度大于等效钢筋锚固长度的2倍)时，在连梁的两端与剪力墙连接位置拆分，形成由两片预制剪力墙(以下简称预制墙①)和一根预制剪力墙连梁(以下简称预制连梁②)构成的结构拆分拼装体系。为了实现预制墙①和预制连梁②的连接，在预制墙①和预制连梁②内设有预留孔洞，预制连梁②孔洞内首先放入等效钢筋5，等效钢筋5端头露出预制连梁②(图1A)，预制墙①和预制连梁②对位后，将预制连梁②内的等效钢筋5拔出插入预制墙①内，通过向预制连梁②和预制墙①预留孔洞及灌浆缝③灌注微膨胀砂浆7，使预制连梁②、预制墙①及等效钢筋5连接为整体(图1B)。(1) When the coupling beam of the shear wall in the prefabricated concrete frame-shear structure is longer (the length of the coupling beam is greater than twice the anchorage length of the equivalent steel bar), split at the two ends of the coupling beam and the connection position of the shear wall, Form a structural disassembly and assembly system consisting of two prefabricated shear walls (hereinafter referred to as prefabricated walls ①) and a prefabricated shear wall coupling beam (hereinafter referred to as prefabricated coupling beam ②). In order to realize the connection of the prefabricated wall ① and the prefabricated coupling beam ②, there are reserved holes in the prefabricated wall ① and the prefabricated coupling beam ②, and the equivalent steel bar 5 is first put into the hole of the prefabricated coupling beam ②, and the end of the equivalent steel bar 5 is exposed After the prefabricated coupling beam ② (Fig. 1A), the prefabricated wall ① and the prefabricated coupling beam ② are aligned, the equivalent steel bar 5 in the prefabricated coupling beam ② is inserted into the prefabricated wall ①, and the prefabricated coupling beam ② and the prefabricated wall ① Reserve holes and grouting joints ③ and pour micro-expansion mortar 7, so that prefabricated coupling beams ②, prefabricated walls ① and equivalent steel bars 5 are connected as a whole (Fig. 1B).
其中，in,
(1)预制连梁②和预制墙①的成孔方法：可选用外直径大于等效钢筋5直径的成孔钢管10，在成孔钢管10壁缠绕螺旋箍筋1，然后将缠有螺旋箍筋1的成孔钢管10预埋于预制连梁②和预制墙①的预定位置，浇筑预制连梁②、预制墙①，待混凝土凝固后，拔出成孔钢管10，形成带孔洞并且孔洞周围留有螺旋箍筋1的预制连梁②和预制墙①(图4)。(1) Hole-forming method of prefabricated connecting beam ② and prefabricated wall ①: can choose the hole-forming steel pipe 10 whose outer diameter is greater than the diameter of equivalent steel bar 5, wind the spiral stirrup 1 on the wall of the hole-forming steel pipe 10, and then wrap the spiral hoop The hole-forming steel pipe 10 of the rib 1 is pre-embedded in the predetermined position of the prefabricated connecting beam ② and the prefabricated wall ①, and the prefabricated connecting beam ② and the prefabricated wall ① are poured. After the concrete is solidified, the hole-forming steel pipe 10 is pulled out to form holes and Prefabricated coupling beams ② and prefabricated walls ① with spiral stirrups 1 left (Fig. 4).
(2)预制连梁②和预制墙①的拼接，将等效钢筋5放入预制连梁②的孔洞，并在孔端留不小于2cm的端头，将预制连梁②和预制墙①的孔洞对位，预制连梁②梁端和预制墙①间留有灌浆缝③，对位完成后，将等效钢筋5拔出，并伸入对应预制墙①的预留孔洞。然后在灌浆缝的周围布置U型模板⑥，U型模板⑥周围通过玻璃胶，与预制连梁②和预制墙①密封。同时从预制连梁②和预制墙①的灌注浆管2灌注微膨胀砂浆7，直至微膨胀砂浆7充满预制构件的孔洞预制墙中预留孔洞3、预制连梁中预留孔洞4和灌浆缝③的U型模板⑥。待微膨胀砂浆7凝固后，拆除U型模板⑥，完成预制连梁②和预制墙①的拼接(图5)。(2) Splicing of the prefabricated coupling beam ② and the prefabricated wall ①, put the equivalent steel bar 5 into the hole of the prefabricated coupling beam ②, and leave an end of not less than 2 cm at the end of the hole, and connect the prefabricated coupling beam ② and the prefabricated wall ① The hole is aligned, and there is a grouting joint ③ between the beam end of the prefabricated connecting beam ② and the prefabricated wall ①. After the alignment is completed, the equivalent steel bar 5 is pulled out and inserted into the reserved hole corresponding to the prefabricated wall ①. Then U-shaped formwork ⑥ is arranged around the grouting joint, and glass glue is used around the U-shaped formwork ⑥ to seal with prefabricated connecting beam ② and prefabricated wall ①. At the same time, micro-expansion mortar 7 is poured from the grouting pipe 2 of the prefabricated coupling beam ② and the prefabricated wall ① until the micro-expansion mortar 7 fills the holes of the prefabricated components. U-shaped template ⑥ for seam ③. After the micro-expansion mortar 7 is solidified, the U-shaped formwork ⑥ is removed to complete the splicing of the prefabricated coupling beam ② and the prefabricated wall ① (Fig. 5).
(二)当装配式混凝土框剪结构中剪力墙的连梁较短(连梁长度小于或等于等效钢筋锚固长度的2倍)时，在连梁的跨中位置拆分，拆分后形成两片各带一半连梁的剪力墙(简称预制带梁墙)。为了实现预制带梁墙和预制带梁墙的连接，在预制带梁墙内预留孔洞(图2A)。拼装时，首先在预制带梁墙内放入等效钢筋5，等效钢筋5端头露出预制带梁墙不小于2cm，预制带梁墙和预制带梁墙对位后，将等效钢筋5拔出插入另一片预制带梁墙，通过向两片预制带梁墙的预留孔洞及灌浆缝灌注微膨胀砂浆7，使两片预制带梁墙及等效钢筋5连接为整体(图2B)。(2) When the coupling beam of the shear wall in the prefabricated concrete frame-shear structure is short (the length of the coupling beam is less than or equal to twice the anchorage length of the equivalent steel bar), split it at the mid-span position of the coupling beam, and after splitting Form two shear walls with half connecting beams (abbreviated as prefabricated beam walls). In order to realize the connection between the prefabricated beam wall and the prefabricated beam wall, holes are reserved in the prefabricated beam wall (Fig. 2A). When assembling, put the equivalent steel bar 5 into the prefabricated beam wall at first, and the end of the equivalent steel bar 5 is not less than 2cm exposed from the prefabricated belt beam wall. Pull out and insert another prefabricated beam wall, and pour micro-expansion mortar 7 into the reserved holes and grouting joints of the two prefabricated beam walls, so that the two prefabricated beam walls and equivalent steel bars 5 are connected as a whole (Fig. 2B) .
其中，预制带梁墙与预制带梁墙的拼接方法同预制连梁②和预制墙①的拼接方法。Among them, the splicing method of the prefabricated beam wall and the prefabricated beam wall is the same as the splicing method of the prefabricated connecting beam ② and the prefabricated wall ①.
图1A-图1F为在连梁两端拆分拼装预制方式。该方式的混凝土框剪结构中剪力墙的结构主要包括：预制墙①、预制连梁②、灌浆缝③、螺旋箍筋1、注浆管2、预制墙①中预留孔洞3、预制连梁②中预留孔洞4、等效钢筋5、等效钢筋端头半螺帽6、微膨胀砂浆7等，具体结构如下：Figures 1A-1F show the prefabrication method of splitting and assembling at both ends of the coupling beam. The structure of the shear wall in the concrete frame-shear structure of this method mainly includes: prefabricated wall ①, prefabricated connecting beam ②, grouting joint ③, spiral stirrup 1, grouting pipe 2, reserved hole 3 in prefabricated wall ①, prefabricated connecting beam Hole 4, equivalent steel bar 5, equivalent steel bar end half nut 6, micro-expansion mortar 7, etc. are reserved in the beam ②. The specific structure is as follows:
预制连梁②在梁两端与两片预制墙①连接，连接通过灌浆缝③、等效钢筋5和微膨胀砂浆7。在预制墙①中预留孔洞3，在预制连梁②中预留孔洞4，预制墙①中预留孔洞3和预制连梁②中预留孔洞4内壁设有螺旋箍筋1，注浆管2分别与预制墙①中预留孔洞3和预制连梁②中预留孔洞4相连通，在等效钢筋5端头有半螺帽6(图3)。The prefabricated connecting beam ② is connected with two prefabricated walls ① at both ends of the beam, and the connection is through the grouting joint ③, the equivalent steel bar 5 and the micro-expansion mortar 7. A hole 3 is reserved in the prefabricated wall ①, a hole 4 is reserved in the prefabricated coupling beam ②, a hole 3 is reserved in the prefabricated wall ① and a hole 4 is reserved in the prefabricated coupling beam ②. 2 are respectively connected with the reserved hole 3 in the prefabricated wall ① and the reserved hole 4 in the prefabricated connecting beam ②, and there is a half nut 6 at the end of the equivalent steel bar 5 (Fig. 3).
所述预制墙①中预留孔洞3和预制连梁②中预留孔洞4通过等效钢筋5连接，预制墙①和预制连梁②之间为灌浆缝③，预制墙①中预留孔洞3、预制连梁②中预留孔洞4与等效钢筋5之间的间隙为微膨胀砂浆7。The reserved hole 3 in the prefabricated wall ① and the reserved hole 4 in the prefabricated connecting beam ② are connected by equivalent steel bars 5, the grouting joint ③ is between the prefabricated wall ① and the prefabricated connecting beam ②, and the reserved hole 3 in the prefabricated wall ① , The gap between the reserved hole 4 and the equivalent steel bar 5 in the prefabricated coupling beam ② is micro-expansion mortar 7.
其适用于连梁较长的工况(连梁长度大于等效钢筋锚固长度的2倍)。上述拼装结构的传力机理为：以两根面积不小于连梁纵向受力钢筋面积的等效钢筋5，代替连梁的纵向受力钢筋，实现连梁弯矩向剪力墙的传递；以灌浆缝③中微膨胀砂浆7实现连梁剪力向剪力墙的传递；预留孔洞和等效钢筋5间灌有微膨胀砂浆7，实现等效钢筋5与预留孔洞周围混凝土间拉力的传递。采用等效钢筋5的目的是为减少需要连接的钢筋数量，使拼接在施工中简便可行。It is suitable for the working condition of the long connecting beam (the length of the connecting beam is greater than twice the anchorage length of the equivalent steel bar). The force transmission mechanism of the above-mentioned assembled structure is as follows: two equivalent steel bars 5 whose area is not smaller than the area of the longitudinally stressed steel bar of the coupling beam are used to replace the longitudinally stressed steel bars of the coupling beam to realize the transfer of the coupling beam bending moment to the shear wall; Grouting joints ③ The micro-expansion mortar 7 realizes the transfer of the shear force of the coupling beam to the shear wall; the micro-expansion mortar 7 is filled between the reserved hole and the equivalent steel bar 5 to realize the tension between the equivalent steel bar 5 and the concrete around the reserved hole transfer. The purpose of adopting equivalent steel bar 5 is to reduce the number of steel bars that need to be connected, so that splicing is simple and feasible in construction.
图2A-图2F为在连梁跨中拆分拼装方式。该方式的混凝土框剪结构中带连梁剪力墙的结构主要包括：灌浆缝③、预制带梁墙Ⅰ④、预制带梁墙Ⅱ⑤、螺旋箍筋1、注浆管2、等效钢筋5、等效钢筋端头半螺帽6、微膨胀砂浆7、预制带梁墙Ⅰ④中预留孔洞8，预制带梁墙Ⅱ⑤中预留孔洞9等，具体结构如下：Fig. 2A-Fig. 2F show the way of disassembling and assembling in the connecting beam span. The structure of the shear wall with coupling beam in the concrete frame-shear structure of this method mainly includes: grouting joint ③, prefabricated beam wall Ⅰ ④, prefabricated beam wall Ⅱ ⑤, spiral stirrup 1, grouting pipe 2, equivalent steel bar 5, Equivalent steel bar end half nut 6, micro-expansion mortar 7, holes 8 reserved in the prefabricated beam wall Ⅰ ④, holes 9 reserved in the prefabricated beam wall Ⅱ ⑤, etc. The specific structure is as follows:
预制带梁墙Ⅰ④和预制带梁墙Ⅱ⑤连接，连接通过灌浆缝③、等效钢筋5和微膨胀砂浆7。在预制带梁墙Ⅰ④留有预留孔洞8，在预制带梁墙Ⅱ⑤留有预留孔洞9，预制带梁墙Ⅰ④中预留孔洞8和预制带梁墙Ⅱ⑤中预留孔洞9内壁设有螺旋箍筋1，注浆管2分别与预制带梁墙Ⅰ④中预留孔洞8和预制带梁墙Ⅱ⑤中预留孔洞9相连通，等效钢筋5端头有半螺帽6(图3)。The prefabricated beam wall Ⅰ④ is connected with the prefabricated beam wall II⑤ through the grouting joint ③, the equivalent steel bar 5 and the micro-expansion mortar 7. There are reserved holes 8 in the prefabricated beam wall Ⅰ④, reserved holes 9 in the prefabricated beam wall Ⅱ⑤, the reserved holes 8 in the prefabricated beam wall Ⅰ④ and the reserved holes 9 in the prefabricated beam wall Ⅱ⑤ The spiral stirrup 1 and the grouting pipe 2 are respectively connected with the reserved holes 8 in the prefabricated beam wall I ④ and the reserved holes 9 in the prefabricated beam wall II ⑤ respectively, and the end of the equivalent steel bar 5 has a half nut 6 (Fig. 3) .
所述预制带梁墙Ⅰ④中预留孔洞8和预制带梁墙Ⅱ⑤中预留孔洞9通过等效钢筋5连接，预制带梁墙Ⅰ④和预制带梁墙Ⅱ⑤之间为灌浆缝③，预制带梁墙Ⅰ④中预留孔洞8、预制带梁墙Ⅱ⑤中预留孔洞9与等效钢筋5之间的间隙为微膨胀砂浆7。The reserved holes 8 in the prefabricated beam wall Ⅰ④ and the reserved holes 9 in the prefabricated beam wall Ⅱ⑤ are connected by equivalent steel bars 5. There is a grouting joint ③ between the prefabricated beam wall Ⅰ④ and the prefabricated beam wall II⑤. The hole 8 reserved in the beam wall I④, the gap between the hole 9 reserved in the prefabricated beam wall II⑤ and the equivalent steel bar 5 is micro-expansion mortar 7.
其适用于连梁较短的工况(连梁长度小于或等于等效钢筋锚固长度的2倍)。上述拼装结构的传力机理为：以两根面积不小于连梁纵向受力钢筋面积的等效钢筋5，代替连梁的纵向受力钢筋，实现拼装处连梁间弯矩的传递；以灌浆缝③中微膨胀砂浆7实现拼装处连梁间剪力的传递；预留孔洞和等效钢筋5间灌有微膨胀砂浆7，实现等效钢筋5与预留孔洞周围混凝土间拉力的传递。采用等效钢筋5的目的是为减少需要连接的钢筋根数，使拼接在施工中简便可行。It is suitable for working conditions where the connecting beam is short (the length of the connecting beam is less than or equal to twice the anchorage length of the equivalent steel bar). The force transmission mechanism of the above-mentioned assembled structure is as follows: use two equivalent steel bars 5 whose area is not smaller than the area of the longitudinally stressed steel bars of the coupling beams to replace the longitudinally stressed steel bars of the coupling beams to realize the transfer of bending moments between the coupling beams at the assembly point; The micro-expansion mortar 7 in the joint ③ realizes the transmission of shear force between the connecting beams at the assembly point; the micro-expansion mortar 7 is filled between the reserved hole and the equivalent steel bar 5 to realize the tension transmission between the equivalent steel bar 5 and the concrete around the reserved hole. The purpose of adopting equivalent steel bar 5 is to reduce the number of steel bars that need to be connected, so that splicing is simple and feasible in construction.
结果表明，本发明将混凝土框剪结构中带连梁的剪力墙，拆分成预制墙、预制连梁或两片预制带梁墙拼装连接结构及提出的拼装连接方法：在力学性能上，能很好的实现拼接预制构件弯矩和剪力的传递，保证连接的可靠；在施工上便于构件制作、运输和吊装安装，在装配时最大限度的减少了装配空间需求及钢筋接头数量，操作方便，连接效率高；在经济上，预制构件中预留孔洞周围布置螺旋箍筋而非套筒，在很大程度上降低了装配成本；预制构件间灌浆缝宽度小，现场湿作业少，装配率高，提高装配化程度，实现节能减排，提高劳动生产率，提高建筑质量，缩短工期。The results show that the present invention splits the shear wall with coupling beams in the concrete frame shear structure into prefabricated walls, prefabricated coupling beams or two prefabricated beam wall assembly connection structures and the proposed assembly connection method: on mechanical properties, It can well realize the transmission of bending moment and shear force of spliced prefabricated components, and ensure the reliability of the connection; it is convenient for component fabrication, transportation and hoisting installation in construction, and it minimizes the assembly space requirements and the number of steel joints during assembly. Convenient and high connection efficiency; economically, spiral stirrups are arranged around the reserved holes in prefabricated components instead of sleeves, which greatly reduces assembly costs; the width of grouting joints between prefabricated components is small, and there is less wet work on site, and assembly High efficiency, improve the degree of assembly, realize energy saving and emission reduction, improve labor productivity, improve construction quality, and shorten construction period.
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Effective date of registration: 20190829 Address after: 322100 Hulian East Street 1189, Changsonggang Functional Zone, Dongyang Economic Development Zone, Jinhua City, Zhejiang Province Patentee after: Zhejiang Construction Technology Co.,Ltd. Address before: 110168 Liaoning province Shenyang Hunnan Hunnan Road No. 9 Patentee before: SHENYANG JIANZHU University |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Assembly connection structure and method of shear wall connecting beams in prefabricated concrete frame shear structure Granted publication date: 20170111 Pledgee: Agricultural Bank of China Limited Dongyang sub branch Pledgor: Zhejiang Construction Technology Co.,Ltd. Registration number: Y2024980040595 |