Fabricated main control building structure with high-performance connection

Abstract

The utility model discloses a high-performance connected assembly type main control building structure, which is characterized in that U-shaped and L-shaped shear walls are arranged on the outer side of a main control building, and frame columns are arranged on the inner side of the main control building to form an outer shear inner frame structure system. The lateral stiffness of the main control building is improved through the outer side shear wall, the number of internal frame columns is reduced, and the building function with few columns and large space is achieved. Main control building walls, columns, beams and plate components are all prefabricated in a factory, a high-performance connecting technology is applied to assembly nodes, component node connecting steel bars do not need to be in direct contact and can be staggered, UHPC is poured in a node post-pouring area, short anchoring, lap joint free and high fault tolerance are achieved, and the field wet operation engineering amount is greatly reduced. By arranging the mounting fixing pieces at the bottoms of the columns / shear walls and arranging the hidden brackets for mounting at the beam-column joints, support-free and die-less construction of the fabricated main control building structure is achieved; according to the utility model, the assembly rate and the mechanical construction rate are improved, and the requirements of on-site support-free and few-mold installation and few-wet-node operation are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power engineering assembly type building, and specifically relates to a kind of assembly monolithic main control building structure. BACKGROUND

[0002] In recent years, with the continuous deepening of the construction of new power system, substation engineering is advancing in uninhabited areas, and is gradually tending to the construction of special environmental conditions such as northwest sand desert and Tibet high altitude, which brings about significant reduction in labor efficiency, transportation difficulties in remote areas, and seriously restricts the quality and efficiency of on-site construction, and there is an urgent need for lightweight assembly technology to effectively reduce transportation costs, improve engineering quality through on-site construction mechanization, and effectively reduce construction period.

[0003] The main control building of the substation is an indispensable part of the power system, which belongs to the category of industrial buildings and plays a key role. As the core of the substation, the main control building integrates monitoring, control, dispatching and other functions, which is crucial to the stable operation of the power system.

[0004] The main control building of substation engineering mainly uses cast-in-place reinforced concrete structure + masonry infilled wall, which requires a large amount of manual template erection and support work, frequent on-site wet work, resulting in long construction period, low standardization and industrialization degree, and low construction efficiency. Although some projects try to use steel structure to improve efficiency, the steel structure scheme brings problems such as poor sound insulation, waterproofing, fireproofing, corrosion resistance and thermal insulation performance, and its construction cost and maintenance cost are also relatively high.

[0005] The main control building of substation engineering has the following characteristics: complex process layout, large load, and large space required for some computer rooms and communication rooms and other functional rooms. At present, cast-in-place reinforced concrete frame structure is mainly used, the frame beam and column section are large, the space utilization rate is not high, and the adaptability is poor in high seismic intensity areas. UTILITY MODEL CONTENTS

[0006] The utility model aims at the defects of the prior art, and provides a new type of assembly monolithic main control building structure and construction method by comprehensively applying high-performance connection technology and external shear internal frame structure form, to solve the problems of flexible layout, few column large space functional room, improve assembly rate and mechanization construction rate.

[0007] To achieve the above purpose, the utility model technical scheme is as follows:

[0008] The application discloses a high-performance connected assembly type main control building structure, which comprises U-shaped shear walls, L-shaped shear walls and frame columns, the U-shaped shear walls and the L-shaped shear walls are arranged on the outside of the main control building, two L-shaped shear walls are connected together through a second connecting beam to form a U-shaped shear wall, the second connecting beam is in the same horizontal plane with a floor slab, the U-shaped shear walls, the L-shaped shear walls and the frame columns form a lateral force resisting structure of the main control building and form a frame-shear wall structure, the U-shaped shear walls, the L-shaped shear walls and the connecting beams arranged on the outside of the main control building form a cylindrical structure, a U-shaped shear wall is arranged at the middle axis of the outside of the main control building, and an L-shaped shear wall is arranged at the edge axis of the outside of the main control building, the wall limbs of the U-shaped shear walls and the L-shaped shear walls are arranged towards the outside of the main control building, and air conditioners and rain pipes are arranged between the grooves on the outside of the U-shaped shear walls.

[0009] Further, the L-shaped shear walls are arranged at the corners of the floor slabs of each floor, the floor slabs of each floor are in the shape of a rectangle as a whole, the L-shaped shear walls are arranged at the four corners of the rectangle, and the U-shaped shear walls are arranged on the side lengths of the rectangle; the U-shaped shear walls are located between the two adjacent L-shaped shear walls, one or multiple U-shaped shear walls are arranged at intervals between the two adjacent L-shaped shear walls, the U-shaped shear walls of the upper and lower floors are assembled together, the L-shaped shear walls of the upper and lower floors are assembled together, and the multiple U-shaped shear walls and the L-shaped shear walls jointly bear the floor slabs.

[0010] Further, the U-shaped shear walls and the L-shaped shear walls are connected through first connecting beams, the two adjacent U-shaped shear walls are connected through the first connecting beams, the first connecting beams between the adjacent U-shaped shear walls and the L-shaped shear walls and the first connecting beams between the two adjacent U-shaped shear walls form a rectangular frame, frame beams and secondary beams are arranged in the rectangular frame, the frame beams and the secondary beams are arranged in a crisscross manner in the rectangular frame, the frame beams and the secondary beams are perpendicular to each other and are arranged in a cross manner, the two ends of the frame beams are connected with the two opposite sides of the rectangular frame respectively, the two ends of the secondary beams are connected with the other two opposite sides of the rectangular frame respectively, one or multiple frame beams and secondary beams are arranged in the rectangular frame at intervals, the multiple frame beams are arranged in parallel to each other, the multiple secondary beams are arranged in parallel to each other, and each frame beam and each secondary beam are arranged in a cross manner.

[0011] Further, the frame columns are vertically arranged at the intersection points of the frame beams and the secondary beams, the frame columns are arranged between two floor slabs, the top end of the frame column is arranged at the intersection point of the frame beams and the secondary beams of the upper floor slab, the bottom end of the frame column is arranged at the intersection point of the frame beams and the secondary beams of the lower floor slab, and the frame column supports the floor slabs.

[0012] Further, the frame column and the frame beam are prefabricated parts, the frame column is reserved with prefabricated column reserved steel bars at the connection node position with the frame beam, the frame beam is reserved with prefabricated beam reserved steel bars at the corresponding position of the two connection nodes, the prefabricated column reserved steel bars and the prefabricated beam reserved steel bars are arranged staggeredly at the two connection nodes, the prefabricated column reserved steel bars extend into the gap between the adjacent prefabricated beam reserved steel bars, the area where the prefabricated column reserved steel bars and the prefabricated beam reserved steel bars are arranged staggeredly is a beam-column node post-poured area, and the beam-column node post-poured area is covered with UHPC ultra-high performance concrete.

[0013] Further, the U-shaped shear wall and the L-shaped shear wall are prefabricated parts, the current layer of shear wall is reserved with current layer of shear wall reserved steel bars at the wall-wall connection node position, the previous layer of shear wall is reserved with previous layer of shear wall reserved steel bars at the wall-wall connection node position, the current layer of shear wall reserved steel bars and the previous layer of shear wall reserved steel bars are arranged staggeredly, the current layer of shear wall reserved steel bars extend into the gap between the adjacent previous layer of shear wall reserved steel bars, the area where the current layer of shear wall reserved steel bars and the previous layer of shear wall reserved steel bars are arranged staggeredly is a wall-wall node post-poured area, and the wall-wall node post-poured area is covered with UHPC ultra-high performance concrete.

[0014] Further, the frame column is a prefabricated part, the current layer of frame column is reserved with current layer of frame column reserved steel bars at the column-column connection node position, the previous layer of frame column is reserved with previous layer of frame column reserved steel bars at the column-column connection node position, the current layer of frame column reserved steel bars and the previous layer of frame column reserved steel bars are arranged staggeredly, the current layer of frame column reserved steel bars extend into the gap between the adjacent previous layer of frame column reserved steel bars, the area where the current layer of frame column reserved steel bars and the previous layer of frame column reserved steel bars are arranged staggeredly is a column-column node post-poured area, and the column-column node post-poured area is covered with UHPC ultra-high performance concrete.

[0015] Further, the U-shaped shear wall, the L-shaped shear wall and the frame column of the bottom layer are installed on the foundation, and installation fixing parts are pre-buried at the bottom of the U-shaped shear wall, the L-shaped shear wall and the frame column, the installation fixing part is cross-shaped, a fixing part bottom plate is arranged at the bottom of the installation fixing part, the fixing part bottom plate is a flat plate, and the fixing part bottom plate and foundation top reserved anchor bolts are fixed together through bolts.

[0016] Further, the top end of the current layer of frame column is pre-buried with an anchor bolt, the bottom of the frame column of the upper layer is pre-buried with an installation fixing part, a fixing part bottom plate is arranged at the bottom of the installation fixing part, the fixing part bottom plate is a flat plate, and the frame column of the upper layer and the frame column of the current layer are installed together through anchor bolts.

[0017] Further, the first installation hidden corbels are embedded at the connection nodes of the frame columns and the frame beams, the second installation hidden corbels are embedded at the connection nodes of the frame beams and the frame columns, the first installation hidden corbels and the second installation hidden corbels are in the shape of cuboids, the first installation hidden corbels and the second installation hidden corbels are placed in an up-down manner, and the first installation hidden corbels and the second installation hidden corbels are fixed through installation fixing bolts.

[0018] The utility model has the advantages of:

[0019] 1. High assembly rate and high mechanized construction rate. According to the Calculation of the Evaluation Standard of Fabricated Buildings (GB / T51129), the assembly rate of the whole assembly type main control building structure with the outer shear and inner frame is 82.6%. The advanced UHPC super high performance concrete steel bar staggered connection technology is introduced. The high performance connection refers to that the reserved steel bars are arranged at the connection nodes of the adjacent two components, and the reserved steel bars of the two components are placed in a staggered manner at the connection nodes. The reserved steel bars of the two components do not need to be accurately positioned during factory production, thereby improving the fault tolerance rate of on-site construction.

[0020] 2. Fewer formworks and free support installation. In the utility model, the installation hidden corbels are arranged at the connection nodes of the frame columns and the frame beams, and the installation hidden corbels are placed in an up-down manner, and then the installation hidden corbels placed in an up-down manner are fixed through bolts. Through the installation hidden corbels, the two ends of the frame beam are lapped on the first installation hidden corbels on the adjacent frame columns, and the frame beam is supported by the first installation hidden corbels on the adjacent frame columns. During the connection process of the column and the beam, the frame beam does not need to be additionally supported, thereby realizing the few formworks and free support installation of the frame columns and the frame beams on site, greatly improving the mechanized construction rate on site, and effectively reducing the construction period of the main control building.

[0021] 3. Flexible layout and large space. The utility model adopts the whole assembly type main control building structure with the outer shear and inner frame. Since the wall limbs of the shear walls are arranged on the outer side of the main control building, the wall limbs do not occupy the indoor space, and the number of internal frame columns of the main control building is greatly reduced, thereby realizing the flexible layout of the main control building and the few column and large space layout of the partial process rooms such as the computer room and the communication room.

[0022] 4. Reducing the arrangement of indoor frame columns. In the traditional building design, multiple rows of frame columns are arranged indoors to bear the horizontal resistance. In the utility model, multiple U-shaped and L-shaped shear walls are arranged on the outer side of the building, the X-direction and Y-direction resistance is borne by the U-shaped and L-shaped shear walls, and thus the arrangement of indoor frame columns can be reduced, thereby increasing the indoor space.

[0023] 5. The utility model discloses an integrated pipeline arrangement. The utility model discloses the U-shaped shear wall opening arrangement is towards the outside of main control building, utilizes the slot inside of U-shaped shear wall, and integrative arrangement air conditioner partition, drain pipeline, realizes air conditioner, pipeline integration design, can match a variety of building outer wall finish materials, makes the appearance modeling of outer facade beautiful.

[0024] 6. Good anti-seismic performance. The utility model discloses traditional frame structure system main control building can only be applied to 8 degrees and below earthquake area, adopts the structure of outer shear and inner frame assembly integral type main control building, because of the addition of shear wall, greatly improves the lateral force of main control building structure, and after calculation, can be applied to 8 degrees half and 9 degrees earthquake area, and the anti-seismic performance is better than traditional frame structure system. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the three-dimensional structure schematic view of the utility model outer shear and inner frame structure main control building.

[0026] Figure 2 It is the plane structure schematic view of the utility model outer shear and inner frame structure main control building.

[0027] Figure 3 It is the plane structure schematic view of the utility model one layer of outer shear and inner frame structure main control building.

[0028] Figure 4 It is the plane structure schematic view of the utility model two layers of outer shear and inner frame structure main control building.

[0029] Figure 5 It is the utility model beam-column joint steel bar staggered connection schematic view.

[0030] Figure 6 It is the utility model wall-wall joint steel bar staggered connection schematic view.

[0031] Figure 7 It is the utility model column-column joint steel bar staggered connection schematic view.

[0032] Figure 8 It is the utility model column-column joint steel bar staggered connection schematic view.

[0033] Figure 9 It is the utility model column / shear wall-base, column-column, shear wall-shear wall node construction method schematic view.

[0034] Figure 10 It is the utility model column / shear wall-base node installation fixed part method schematic view.

[0035] Figure 11 It is the utility model beam-column joint construction method schematic view.

[0036] Figure 12 It is the embodiment of the utility model beam-column joint installation hidden bracket method schematic diagram.

[0037] The drawing reference: U-shaped shear wall 1;L-shaped shear wall 2;Frame column 3;First diaphragm 11;Second diaphragm 12;Frame beam 13;Secondary beam 14;Floor slab 21;Prefabricated column reserved reinforcement 31;Prefabricated beam reserved reinforcement 32;This layer shear wall reserved reinforcement 33;Last layer shear wall reserved reinforcement 34;This layer frame column reserved reinforcement 35;Last layer frame column reserved reinforcement 36;Foundation reserved reinforcement 37;Foundation embedded anchor bolt 38;Pre-buried nail 39;Beam-column joint post-pouring area 41;Wall-wall node post-pouring area 42;Column-column node post-pouring area 43;Column / shear wall-foundation node post-pouring area 44;Installation fixing part 51;Fixing part bottom plate 52;Installation hidden bracket 53;Installation hidden bracket 54;Installation fixed bolt 55. DETAILED DESCRIPTION

[0038] In order to make the technical problem to be solved in the application, technical scheme and beneficial effects more clearly, the application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and not to limit the application.

[0039] The utility model shear wall, frame column and other vertical components, diaphragm, frame beam and other horizontal components, and floor slab together form frame-shear wall structural system. Since the shear wall is arranged on the outside of the main control building, and the frame column is arranged on the inside of the main control building, it is called "outer shear inner frame" structural system.

[0040] As Figure 1 The embodiment provides a high-performance connected assembly type main control building structure, which comprises U-shaped shear wall 1, L-shaped shear wall 2, frame column 3, first diaphragm 11, second diaphragm 12, frame beam 13, secondary beam 14 and floor slab 21. U-shaped shear wall 1, L-shaped shear wall 2, frame column 3, first diaphragm 11, second diaphragm 12, frame beam 13, secondary beam 14 and floor slab 21 are all prefabricated reinforced concrete structures. Figure 1 In the embodiment, the upper and lower U-shaped shear walls 1 are connected and assembled together, and the upper and lower L-shaped shear walls 2 are connected and assembled together.

[0041] Two L-shaped shear walls 2 are connected together through second diaphragm 12 to form a U-shaped shear wall 1, and second diaphragm 12 is in the same horizontal plane as floor slab 21.

[0042] As Figure 2As shown, the U-shaped shear walls 1 and the L-shaped shear walls 2 are arranged outside the main control building, and the frame columns 3 are arranged inside the main control building, to jointly form a lateral force resisting structure of the main control building, forming a frame-shear wall structure system. In a specific embodiment, the floor slab 21 of each floor is in the shape of a rectangle as a whole, and the L-shaped shear walls 2 are arranged at the corners of the floor slab 21 of each floor, i.e. at the four corners of the rectangle. The U-shaped shear walls 1 are arranged along the edges of the floor slab 21 of each floor, i.e. the U-shaped shear walls 1 are arranged along the side length of the rectangle. The U-shaped shear walls 1 are located between two adjacent L-shaped shear walls 2, and according to the length of the floor slab 21, multiple U-shaped shear walls 1 can be arranged between the two adjacent L-shaped shear walls 2, and the multiple U-shaped shear walls 1 are arranged uniformly spaced between the two adjacent L-shaped shear walls 2. The U-shaped shear walls 1 of the upper and lower floors are assembled together, and the L-shaped shear walls 2 of the upper and lower floors are assembled together. The multiple U-shaped shear walls 1 and the L-shaped shear walls 2 jointly bear the floor slab 21. As shown, Figure 1 In a specific embodiment, three U-shaped shear walls 1 are arranged uniformly spaced along the length direction of the floor slab 21, and one U-shaped shear wall 1 is arranged along the width direction of the floor slab 21.

[0043] The first coupling beams 11 are arranged between the adjacent U-shaped shear walls 1 and the L-shaped shear walls 2, and also between the two adjacent U-shaped shear walls 1. The first coupling beams 11 between the adjacent U-shaped shear walls 1 and the L-shaped shear walls 2, and the first coupling beams 11 between the two adjacent U-shaped shear walls 1 form a rectangular frame, and the frame beams 13 and the secondary beams 14 are arranged in the rectangular frame. In a specific embodiment, the frame beams 13 and the secondary beams 14 are perpendicular to each other and cross each other. The two ends of the frame beam 13 are connected to the two opposite sides of the rectangular frame, and the two ends of the secondary beam 14 are connected to the other two opposite sides of the rectangular frame. The rectangular frame can serve as the edge of the floor slab 21. According to the length or width of the floor slab 21, one or multiple frame beams 13 and secondary beams 14 can be arranged uniformly spaced. The multiple frame beams 13 are arranged parallel to each other, and the multiple secondary beams 14 are arranged parallel to each other. Each frame beam 13 and secondary beam 14 are arranged perpendicular to each other. As shown, Figure 1 In a specific embodiment, one frame beam 13 is arranged along the length direction of the floor slab 21, and six secondary beams 14 are arranged along the width direction of the floor slab 21.

[0044] Frame column 3 is vertically positioned at the intersection of frame beam 13 and secondary beam 14, and is located between two floor slabs 21. The top of frame column 3 is located at the intersection of frame beam 13 and secondary beam 14 on the upper floor slab, and the bottom of frame column 3 is located at the intersection of frame beam 13 and secondary beam 14 on the lower floor slab, to provide support for floor slab 21; alternatively, frame column 3 may be vertically positioned between floor slab 21 and the roof to provide support for the roof. Figure 1 As shown, in a specific embodiment, frame columns 3 are provided at three intersections of the frame beam 13 and the secondary beam 14.

[0045] To meet the seismic resistance requirements of high-intensity seismic zones, traditional frame structures typically require multiple rows of frame columns horizontally. This invention incorporates multiple U-shaped and L-shaped shear walls on the exterior of the building. These shear walls bear the resistance in both the X and Y directions, thus reducing the number of interior frame columns and increasing interior space. Figure 3 and Figure 4 The diagram shows the plan layout of shear walls and frame columns in the external shear and internal frame structure system of this embodiment. In this embodiment, through optimization, U-shaped shear walls 1 and L-shaped shear walls 2 are reasonably arranged on the outside of the main control building, and the arrangement of the outer wing walls of the main control building in the traditional frame structure scheme is adjusted. The wing walls are mainly used for the centralized arrangement of the exterior air conditioning in the traditional frame structure scheme. U-shaped shear walls 1 are used to replace the outer wing walls of the main control building in the traditional frame structure scheme, and the exterior air conditioning and rainwater pipes are centrally arranged in the outer groove of U-shaped shear walls 1.

[0046] The exterior air conditioning unit is located within the groove of the U-shaped shear wall 1; the rainwater pipe is also located within the groove of the U-shaped shear wall 1, arranged along the vertical surface of the U-shaped groove. Simultaneously, shading materials such as louvers or perforated aluminum panels can be installed on the outside of the U-shaped shear wall to close the U-shaped groove and improve the air conditioning heat exchange efficiency. This utility model arranges the opening of the U-shaped shear wall facing the outside of the main control building, integrating air conditioning partitions and drainage pipes within the groove of the U-shaped shear wall, achieving integrated design of air conditioning and piping. It can be combined with various building exterior wall cladding materials, making the facade aesthetically pleasing; at the same time, shading materials such as louvers or perforated aluminum panels can be installed on the outside of the U-shaped shear wall to close the U-shaped groove, improving the air conditioning heat exchange efficiency and achieving energy saving and consumption reduction.

[0047] This utility model uses U-shaped and L-shaped shear walls to bear the resistance in the X and Y directions, thus reducing the number of indoor frame columns. This embodiment reasonably eliminates some of the frame columns inside the main control building in the traditional frame structure scheme. In this utility model embodiment, only one row of columns is needed inside the main control building to meet the seismic resistance requirements of high intensity zones.

[0048] Due to the reduction of internal frame columns in the main control building, and the outward arrangement of the outer shear walls (i.e., the U-shaped and L-shaped shear walls are arranged facing outwards from the main control building), the walls are prevented from occupying interior space, resulting in a larger usable building space inside the main control building and enabling a flexible layout within the main control building.

[0049] For process rooms such as computer rooms and communication rooms in the main control building, which often require more space due to the large number of electrical equipment, the process professionals need to minimize or eliminate structural columns in these rooms. This embodiment achieves a layout with fewer columns and larger spaces in process rooms such as computer rooms and communication rooms in the main control building by adopting an external shear frame structure system.

[0050] like Figure 5 As shown, both frame columns 3 and frame beams 13 are prefabricated in the factory. Prefabricated column reinforcement 31 is reserved at the connection node between frame column 3 and frame beam 13, and prefabricated beam reinforcement 32 is reserved at the corresponding node position in frame beam 13. High-performance connection technology is applied, so the prefabricated column reinforcement 31 and prefabricated beam reinforcement 32 do not need to be in direct contact. The prefabricated column reinforcement 31 and prefabricated beam reinforcement 32 are staggered, with the prefabricated column reinforcement 31 extending into the gap between adjacent prefabricated beam reinforcement 32. The frame column 3 and frame beam 13 are connected in a prefabricated manner. When beam 13 is manufactured in the factory, it is not necessary to accurately position the precast column reserved steel bars 31 and the precast beam reserved steel bars 32, thereby improving the error tolerance rate of on-site construction. The post-cast area 41 of the beam-column joint refers to the area where the precast column reserved steel bars 31 and the precast beam reserved steel bars 32 are placed alternately. In the post-cast area 41 of the beam-column joint, UHPC ultra-high performance concrete is used for pouring. Since UHPC has high tensile strength, it can achieve short anchorage of steel bars, no lap splicing, and high error tolerance, which greatly reduces the amount of wet work on site.

[0051] like Figure 6As shown, both the shear wall of this floor and the shear wall of the floor above are prefabricated in the factory. The shear wall of this floor has pre-reserved reinforcing bars 33 at the wall-to-wall connection nodes, and the shear wall of the floor above has pre-reserved reinforcing bars 34 at the wall-to-wall connection nodes. Using high-performance connection technology, the pre-reserved reinforcing bars 33 and 34 of the shear wall of this floor do not need to be in direct contact; they are staggered and extend into the gaps between adjacent pre-reserved reinforcing bars 34 of the shear wall of the floor above. When the shear wall 2 of the first floor and the shear wall 2 of the next floor are manufactured in the factory, it is not necessary to accurately position the reserved steel bars 33 of the shear wall of this floor and the reserved steel bars 34 of the shear wall of the next floor, thereby improving the error tolerance rate of on-site construction. The post-cast area 42 of the wall-to-wall node refers to the area where the reserved steel bars 33 of the shear wall of this floor and the reserved steel bars 34 of the shear wall of the next floor are placed alternately. In the post-cast area 42 of the wall-to-wall node, UHPC ultra-high performance concrete is used for pouring. Since UHPC has high tensile strength, it can achieve short anchorage of steel bars, no lap splicing, and high error tolerance, which greatly reduces the amount of wet work on site.

[0052] like Figure 7 and Figure 8 As shown, both the current-floor frame column 3 and the upper-floor frame column 3 are prefabricated in the factory. The current-floor frame column 3 has pre-reserved reinforcing bars 35 at the column-to-column connection points, and the upper-floor frame column 3 has pre-reserved reinforcing bars 36 at the column-to-column connection points. Using high-performance connection technology, the pre-reserved reinforcing bars 35 and 36 of the current-floor frame column do not need to be in direct contact; they are staggered and extend into the gaps between adjacent pre-reserved reinforcing bars 36 of the upper-floor frame column. When the frame columns 3 of this floor and the frame columns 3 of the previous floor are manufactured in the factory, it is not necessary to accurately position the reserved steel bars 35 of the frame columns of this floor and the reserved steel bars 36 of the frame columns of the previous floor, thereby improving the error tolerance rate of on-site construction. The post-cast area 43 of the column-column joint refers to the area where the reserved steel bars 35 of the frame columns of this floor and the reserved steel bars 36 of the frame columns of the previous floor are placed alternately. In the post-cast area 43 of the column-column joint, UHPC ultra-high performance concrete is used for pouring. Since UHPC has high tensile strength, it can achieve short anchorage of steel bars, no lap splicing, and high error tolerance, which greatly reduces the amount of wet work on site.

[0053] In this utility model, in order to reduce project costs, all prefabricated components processed in the factory, such as U-shaped shear wall 1, L-shaped shear wall 2, frame column 3, first connecting beam 11, second connecting beam 12, frame beam 13, secondary beam 14, floor slab 21, etc., are made of ordinary concrete. The post-cast joints poured during on-site installation, such as the post-cast area 41 of beam-column joint, the post-cast area 42 of wall-wall joint, and the post-cast area 43 of column-column joint, are made of UHPC ultra-high performance concrete.

[0054] The construction method for the prefabricated main control building with high-performance connection of this utility model includes the following steps:

[0055] Step 1: First install the U-shaped shear wall 1, L-shaped shear wall 2, and frame column 3 on this floor;

[0056] Regarding the installation of U-shaped shear wall 1, L-shaped shear wall 2, and frame column 3 on this floor, as follows: Figure 9 and Figure 10 As shown, the bottommost U-shaped shear wall 1, L-shaped shear wall 2, and frame column 3 are installed on the foundation.

[0057] Step 2: Install the connecting beams 11 and 12 and the frame beam 13 on this floor. The shear wall, frame column 3, connecting beams and frame beam 13 on this floor together form an integral frame-shear wall structure.

[0058] Connecting beams 11 are installed between adjacent U-shaped shear walls 1, and between adjacent U-shaped shear walls 1 and L-shaped shear walls 2.

[0059] Step 3: Install secondary beam 14, followed by floor slab 21;

[0060] Frame beam 13 and secondary beam 14 are set perpendicularly and intersecting. Frame column 3 is located at the intersection of frame beam 13 and secondary beam 14. After the floor slab 21 of this floor is installed, the next floor U-shaped shear wall 1, L-shaped shear wall 2 and frame column 3 are installed in the order of steps one to three. The connecting beams and frame beams are installed in sequence to form the second floor overall structure until the construction of the prefabricated main control building structure is completed.

[0061] (1) Construction methods for precast columns, shear walls and foundation joints, and construction methods for U-shaped shear wall 1 and L-shaped shear wall 2.

[0062] Step 1: During the production of prefabricated vertical components in the factory, fasteners 51 are pre-embedded at the bottom of the U-shaped shear wall 1, L-shaped shear wall 2, and frame column 3. A fastener base plate 52 is provided at the bottom of each fastener 51. Simultaneously, pre-reserved reinforcing bars 33 for the shear wall 1 and L-shaped shear wall 2 are pre-reserved at the bottom of the frame column 3, and pre-reserved reinforcing bars 35 for the frame column 3 are pre-reserved at the bottom of the frame column 3. The fastener 51 is cross-shaped, and the fastener base plate 52 is a flat plate at the bottom of each fastener 51.

[0063] Step Two: During on-site foundation construction, anchor bolts 38 are pre-embedded at the center of the frame columns and shear walls at the top of the foundation. Fixing measures are taken to calibrate and secure the anchor bolts. The base plate 52 of the fixing component is fixed to the pre-embedded anchor bolts 38 at the top of the foundation using bolts. Simultaneously, foundation reinforcement bars 37 are pre-embedded at the top of the foundation for subsequent high-performance connections with the upper frame columns and shear walls.

[0064] Step 3: On-site mechanical hoisting of frame columns and shear walls. After positioning, the anchor bolts 38 pre-embedded in the foundation are connected to the installation fasteners 51 and fixed by anchor bolts; the positioning of frame columns and shear walls is calibrated by means of laser positioning and other methods.

[0065] Step 4: After the installation of multiple frame columns and shear walls is completed, check the positions of the reserved foundation reinforcement 37, shear wall reinforcement 33, and frame column reinforcement 35 at the top of the foundation. The reserved shear wall reinforcement 33 at the bottom of U-shaped shear wall 1 and L-shaped shear wall 2 extends into the gap between the adjacent foundation reinforcement 37. The reserved frame column reinforcement 35 at the bottom of frame column 3 extends into the gap between the adjacent foundation reinforcement 37. In this step, the area where the foundation reinforcement 37, shear wall reinforcement 33, and frame column reinforcement 35 are staggered is the post-cast area 44 of the column / shear wall-foundation node. UHPC ultra-high performance concrete is used to pour the post-cast area 44 of the column / shear wall-foundation node, connecting the frame columns, shear walls, and foundation into a whole through high-performance connection.

[0066] Step 5: After the bottom shear wall is installed, the upper shear wall is installed on the bottom shear wall. Regarding the installation of the shear wall of this layer and the upper shear wall, anchor bolts 38 are pre-embedded at the top of the frame column of this layer and fixed to the upper frame column installation fastener 51 through the anchor bolts. The reserved steel bars at the top of the shear wall of this layer and the reserved steel bars at the bottom of the upper shear wall are placed alternately.

[0067] Through the above construction methods and high-performance connection node design, precast columns and shear walls can be installed quickly, efficiently, and with minimal formwork and no need for support.

[0068] (2) Construction method of the joint between the frame column of this floor and the frame column of the upper floor

[0069] The construction method for the connection node between the frame column of this layer and the frame column of the upper layer is basically the same as the construction method of the precast column, shear wall and foundation. Anchor bolts 38 are pre-embedded at the top of the frame column of this layer and fixed to the installation fastener 51 of the upper frame column by means of anchor bolts; other steps and construction methods are the same as construction method (1).

[0070] (3) Construction method of frame column and frame beam joint

[0071] Step 1: As Figure 11 and Figure 12 As shown, when producing precast components in the factory, a first hidden bracket 53 for installation is pre-embedded at the corresponding position of the frame column 3, and a second hidden bracket 54 for installation is pre-embedded at the corresponding position of the frame beam 13; at the same time, precast column connecting steel bars 31 and precast beam connecting steel bars 32 are pre-reserved respectively.

[0072] Step 2: During on-site assembly installation, after the frame column 3 is hoisted, the frame beam 13 is hoisted on-site using machinery. The two ends of the frame beam 13 are placed on the first mounting bracket 53 of the frame column 3, and the mounting bolts 55 are tightened. Elliptical bolt holes are made on the first mounting bracket 53 at the corresponding positions of the mounting bolts 55 to facilitate the adjustment and calibration of manufacturing errors of prefabricated components and on-site installation errors.

[0073] In this utility model, both the first mounting bracket 53 and the second mounting bracket 54 are rectangular parallelepipeds. The first mounting bracket 53 and the second mounting bracket 54 are placed one above the other and fixed by mounting bolts 55.

[0074] This utility model, by installing concealed corbels, eliminates the need for support between columns and beams during the connection process, achieving on-site installation with less formwork and no support required, thus improving construction efficiency.

[0075] Step 3: After all 13 frame beams of this floor have been hoisted, the positioning of the frame columns and shear walls will be calibrated using laser positioning and other methods.

[0076] Step 4: High-performance connection of beam-column joint. Check the position of the precast column reserved steel bar 31 and the precast beam reserved steel bar 32; use UHPC ultra-high performance concrete to pour the post-cast area 41 of the beam-column joint, and form a whole with the frame column and frame beam through high-performance connection.

[0077] Through the above construction methods and high-performance connection node design, precast columns and beams can be installed quickly, efficiently, and with minimal formwork and no need for support.

[0078] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A high-performance connected prefabricated main control building structure, comprising a U-shaped shear wall (1), an L-shaped shear wall (2), and frame columns (3), characterized in that: U-shaped shear walls (1) and L-shaped shear walls (2) are arranged on the outside of the main control building. The two L-shaped shear walls (2) are connected together by a second connecting beam (12) to form a U-shaped shear wall (1). The second connecting beam (12) and the floor slab (21) are on the same horizontal plane. The U-shaped shear walls (1), L-shaped shear walls (2) and frame columns (3) constitute the lateral force resisting structure of the main control building, forming a frame-shear wall structure. The U-shaped shear walls (1) on the outside of the main control building The U-shaped shear walls (1), L-shaped shear walls (2) are connected to each other by connecting beams. The U-shaped shear walls (1), L-shaped shear walls (2) and connecting beams are arranged on the outside of the main control building to form a cylindrical structure. The U-shaped shear wall (1) is arranged at the middle axis of the outside of the main control building, and the L-shaped shear wall (2) is arranged at the edge axis of the outside of the main control building. The wall segments of the U-shaped shear walls (1) and L-shaped shear walls (2) are arranged facing the outside of the main control building. Air conditioning and rainwater pipes are arranged in the grooves outside the U-shaped shear walls (1) of the main control building.

2. The prefabricated main control building structure with high-performance connection according to claim 1, characterized in that: The L-shaped shear walls (2) are arranged at the corners of the floor slabs (21) of each floor. The floor slabs (21) of each floor are rectangular in shape. The L-shaped shear walls (2) are arranged at the four corners of the rectangle, and the U-shaped shear walls (1) are arranged on the sides of the rectangle. The U-shaped shear walls (1) are located between two adjacent L-shaped shear walls (2). One or multiple U-shaped shear walls (1) are set between two adjacent L-shaped shear walls (2) at equal intervals. The U-shaped shear walls (1) of the upper and lower floors are assembled together, and the L-shaped shear walls (2) of the upper and lower floors are assembled together. The multiple U-shaped shear walls (1) and L-shaped shear walls (2) together support the floor slabs (21).

3. The prefabricated main control building structure with high-performance connection according to claim 1, characterized in that: The U-shaped shear wall (1) and the L-shaped shear wall (2), as well as two adjacent U-shaped shear walls (1), are connected by first connecting beams (11). Multiple first connecting beams (11) are connected to form a rectangular frame. Frame beams (13) and secondary beams (14) are provided in the rectangular frame. The frame beams (13) and secondary beams (14) are arranged in a crisscross pattern in the rectangular frame. The two ends of the frame beams (13) are connected to the two opposite sides of the rectangular frame, and the two ends of the secondary beams (14) are connected to the other two opposite sides of the rectangular frame. One or multiple frame beams (13) and secondary beams (14) are provided in the rectangular frame at even intervals. The multiple frame beams (13) are arranged parallel to each other, and the multiple secondary beams (14) are arranged parallel to each other. Each frame beam (13) and secondary beam (14) is arranged perpendicularly to each other.

4. The prefabricated main control building structure with high-performance connection according to claim 1, characterized in that: The frame column (3) is vertically set at the intersection of the frame beam (13) and the secondary beam (14). The frame column (3) is set between the two floor slabs (21). The top of the frame column (3) is set at the intersection of the frame beam (13) and the secondary beam (14) of the upper floor slab. The bottom of the frame column (3) is set at the intersection of the frame beam (13) and the secondary beam (14) of the lower floor slab to provide support for the floor slab (21). The frame column (3) is also vertically set between the floor slab (21) and the roof to provide support for the roof.

5. The prefabricated main control building structure with high-performance connection according to claim 1, characterized in that: The frame column (3) and frame beam (13) are precast components. The frame column (3) has a precast column reserved steel bar (31) at the connection node with the frame beam (13), and the frame beam (13) has a precast beam reserved steel bar (32) at the corresponding position of the connection node between the two. The precast column reserved steel bar (31) and the precast beam reserved steel bar (32) are staggered at the connection node between the two. The precast column reserved steel bar (31) extends into the gap between the adjacent precast beam reserved steel bar (32). The area where the precast column reserved steel bar (31) and the precast beam reserved steel bar (32) are placed alternately is the beam-column joint post-cast area (41). The beam-column joint post-cast area (41) is covered with UHPC ultra-high performance concrete.

6. The prefabricated main control building structure with high-performance connection according to claim 1, characterized in that: Both the U-shaped shear wall (1) and the L-shaped shear wall (2) are precast components. The shear wall of this layer has a reserved steel bar (33) at the wall-to-wall connection node, and the shear wall of the upper layer has a reserved steel bar (34) at the wall-to-wall connection node. The reserved steel bars (33) of this layer and the reserved steel bars (34) of the upper layer are staggered. The reserved steel bars (33) of this layer extend into the gap between the reserved steel bars (34) of the adjacent upper layer. The area where the reserved steel bars (33) of this layer and the reserved steel bars (34) of the upper layer are staggered is the post-cast area (42) of the wall-to-wall node. The post-cast area (42) of the wall-to-wall node is covered with UHPC ultra-high performance concrete.

7. The prefabricated main control building structure with high-performance connection according to claim 1, characterized in that: The frame column (3) is a precast component. The frame column (3) of this layer has a reserved steel bar (35) at the column-to-column connection node. The frame column (3) of the upper layer has a reserved steel bar (36) at the column-to-column connection node. The reserved steel bar (35) of this layer and the reserved steel bar (36) of the upper layer are staggered. The reserved steel bar (35) of this layer extends into the gap between the reserved steel bars (36) of the adjacent upper layer frame column. The area where the reserved steel bars (35) of this layer and the reserved steel bars (36) of the upper layer frame column are staggered is the post-cast area (43) of the column-to-column node. The post-cast area (43) of the column-to-column node is covered with UHPC ultra-high performance concrete.

8. The prefabricated main control building structure with high-performance connection according to claim 1, characterized in that: The U-shaped shear wall (1), L-shaped shear wall (2), and frame column (3) at the bottom are installed on the foundation. Fixing components (51) are pre-embedded at the bottom of the U-shaped shear wall (1), L-shaped shear wall (2), and frame column (3). The fixing components (51) are cross-shaped. A fixing base plate (52) is set at the bottom of the fixing components (51). The fixing base plate (52) is a flat plate. The fixing base plate (52) is fixed together with the anchor bolts (38) reserved at the top of the foundation by bolts.

9. The prefabricated main control building structure with high-performance connection according to claim 1, characterized in that: Anchor bolts (38) are pre-embedded at the top of the frame column (3) of this layer, and mounting fasteners (51) are pre-embedded at the bottom of the frame column (3) of the upper layer. A fastener base plate (52) is provided at the bottom of the mounting fastener (51). The fastener base plate (52) is a flat plate. The frame column (3) of the upper layer and the frame column (3) of this layer are installed together by anchor bolts (38).

10. The prefabricated main control building structure with high-performance connection according to claim 1, characterized in that: A first mounting bracket (53) is pre-embedded at the connection node between the frame column (3) and the frame beam (13), and a second mounting bracket (54) is pre-embedded at the connection node between the frame beam (13) and the frame column (3). The first mounting bracket (53) and the second mounting bracket (54) are in the shape of a cuboid. The first mounting bracket (53) and the second mounting bracket (54) are placed one above the other. The first mounting bracket (53) and the second mounting bracket (54) are fixed by mounting bolts (55).

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