TW202417712A - Architecture system and method for constructing the same - Google Patents

Abstract

The instant disclosure provides an architecture system which includes an exterior system and an interior system surrounded by the exterior system. The exterior system includes a number of precast columns, and a number of precast connection structures provided on the precast columns, a precast beam structure and an on-site connection structure. The precast connection structures each includes a precast joint and two beam structures extending from the precast joint. The beam structure of one of the precast connection structure is directly coupled to the beam structure of another neighboring precast connection structure, or is coupled to the beam structure of another neighboring precast connection structure via the precast beam structure and an on-site connection structure. The interior system includes a number of interior column structures and a number of interior beam structures. The interior beam structures connect two neighboring interior column structures or one of the interior column structures and a precast joint of one of the precast connection structures.

Description

Building system and construction method thereof

Embodiments of the present invention provide a building system and a construction method thereof.

Common construction methods include RC (reinforced concrete) structure, SC (concrete coated on the outside of steel beams and columns for fireproofing) structure and SRC (reinforced concrete) structure. RC (reinforced concrete) structure can be divided into the traditional on-site casting method of pouring concrete on site and the precast method developed in recent years with advantages such as excellent structural quality, safe and rapid construction, and economical and reasonable construction cost. The precast method is to construct the steel structure and pour concrete in a precast factory or around the construction site with standardized operation processes and modular molds, and quickly mass-produce precise precast components such as columns, beams, and plates. Through precise transportation management and assembly operations, the precast components produced in the precast factory or around the construction site are assembled on site. In this way, the workload on the construction site can be reduced, manpower and construction time can be reduced, thereby effectively shortening the construction period and ensuring the construction quality. In addition, the precast construction method can also reduce or avoid construction on the external wall scaffolding, greatly improving construction safety.

Since each construction method has its own advantages and disadvantages, mixed construction methods are gradually being adopted. For example, the combination of precast column construction method and traditional field casting construction method in residential construction projects can give play to their respective advantages and disadvantages. The use of precast column construction method to construct the main beam and column structure of the building's periphery, supplemented by the traditional field casting method to construct the more intricate construction details of the building's interior, can usually achieve the best cost-effectiveness in terms of quality, labor time, and finished products. In view of the development of such buildings, how to use the least construction steps to achieve the maximum output and provide the best quality of the manufacturing method of such beam and column structure, and the beam and column structure manufactured by this method are what the industry is looking forward to.

One embodiment of the present invention provides a building system, which includes: an outer building system located at the outer periphery of the building system and an inner building system surrounded by the outer building system. The outer building system includes a plurality of precast corner columns, which are arranged at a plurality of corners of the outer building system; a plurality of precast side columns, which are arranged on the sides of the outer building system and are located between two of the precast corner columns; a plurality of precast connection structures, each including a precast connection head fixed to one of the precast corner columns or one of the precast side columns, and two beam structures extending horizontally from two sides of the precast connection head; a precast beam structure; and a field-cast connection structure connected to one end of the precast beam structure. The beam structure of one of the precast connection structures is directly coupled to the beam structure of another of the adjacent precast connection structures, or is connected via the precast beam structure and the field-cast connection structure. The internal construction system includes: a plurality of internal column structures; and a plurality of internal beam structures connected between two of the internal column structures or between one of the internal column structures and the precast connection head of one of the precast connection structures.

Another embodiment of the present invention provides a construction method of a building system, which includes: a construction method of a building system, including: constructing an external structural unit of the building system, including: providing a plurality of precast corner columns, the precast corner columns are located at a plurality of corners of the peripheral building system; providing a plurality of precast side columns, the precast side columns are arranged on the side of the peripheral building system and are located between two of the precast corner columns; hanging a plurality of precast connection structures on one of the precast corner columns or one of the precast side columns, and fixing a precast connection head of the precast connection structures on one of the precast corner columns or one of the precast side columns; and connecting two adjacent beam structures horizontally extending from each of the precast connection heads in the precast connection structures, wherein at least two of the beam structures are connected by a precast beam structure and a field-cast connection structure; and constructing an internal building system surrounded by the external structural unit in the building system, including: manufacturing a plurality of internal column structures by field casting; and manufacturing a plurality of internal beam structures by field casting to connect between two of the internal column structures or between one of the internal column structures and the precast connection head of one of the precast connection structures.

In order to better understand the features, contents and advantages of this invention and the effects it can achieve, this invention is described in detail as follows with accompanying drawings and in the form of embodiments. The drawings used therein are only for illustration and auxiliary description. Therefore, the proportions and configurations of the attached drawings should not be interpreted to limit the scope of the patent application of this invention.

The terms "a" or "an" in this disclosure are used to describe the elements and components of this invention. This term is only for the convenience of description and to give the basic concept of this invention. This description should be understood to include one or at least one, and unless otherwise clearly indicated, the singular also includes the plural. When used with the word "including" in the scope of the patent application, the term "a" can mean one or more than one. In addition, the term "or" in this disclosure means "and/or".

Unless otherwise specified, spatial descriptions such as "above", "below", "upward", "left", "right", "downward", "body", "base", "vertical", "horizontal", "side", "higher", "lower", "upper", "above", "below" and the like are indicated with respect to the directions shown in the figures. It should be understood that the spatial descriptions used in the present disclosure are for illustrative purposes only, and the actual implementation of the structures described in the present disclosure can be spatially arranged in any relative direction, and this limitation does not change the advantages of the embodiments of the present invention. For example, in the description of some embodiments, providing an element “on” another element may cover the situation where the former element is directly on the latter element (e.g., physically in contact with the latter element) and the situation where one or more intervening elements are located between the former element and the latter element.

As used in this disclosure, the terms "substantially," "substantial," "substantial," and "approximately" are used to describe and take into account minor variations. When used in conjunction with an event or circumstance, these terms may mean both the situation where the event or circumstance definitely occurred and the situation where the event or circumstance closely approximates to occurring.

In the following contents of this disclosure, the names of components including "precast" (e.g., precast corner columns, precast side columns, precast connection structures, precast beam structures, etc.) correspond to building structures manufactured using the "precast method", which is to construct steel structures such as steel cages, build templates and pour concrete in a precast factory or around the construction site with standardized operation processes and modular molds, and quickly mass-produce high-precision and high-quality uniformity columns, beams, plates, etc. Structure components. Subsequently, the completed structural components are assembled on the construction site through precise transportation management and assembly operations. On the other hand, the names of components that include "site cast" (for example: site cast joint structure, etc.) correspond to structures that use the traditional "site cast method" to build structures. They are structures that are completed on site by constructing steel structures, building formwork, and pouring concrete.

According to one embodiment of the present invention, the outer perimeter construction system of a single floor of the construction system of the present invention adopts a precast beam-column structure, and part of the structure of the inner perimeter construction system can adopt a precast beam-column structure or be manufactured by a traditional field casting method. The outer perimeter construction system includes a plurality of precast corner columns, a plurality of precast side columns, a plurality of precast connection structures, at least one precast beam structure, and at least one field cast connection structure. The inner perimeter construction system can optionally include one or more precast beam-column structures and manufacture the remaining beam-column structures by a traditional field casting method, or all beam-column structures are manufactured by a traditional field casting method.

FIG1 shows a schematic diagram of a building system 1 in an embodiment of the present invention. The outer peripheral building system 10 of a single floor of the building system 1 includes four precast corner columns 11, eight precast side columns 13, four first precast connection structures 15, eight second precast connection structures 17, two precast beam structures 20, and two field-cast connection structures 30. The inner building system 40 of the building system 1 is partially precast beam-column structures, and the remaining beam-column structures are manufactured by conventional field-casting methods, including two field-cast column structures 41, a plurality of field-cast beam structures 42, two inner precast column structures 43, and two inner precast connection structures 44, 45.

According to some embodiments of the present disclosure, the construction method of the building system 1 is described as follows:

The construction method of the building system 1 includes positioning the precast column structure of the peripheral building system 10 and the precast column structure of the internal building system 40. For example, in the embodiment shown in FIG. 1 , when constructing each floor of the building system 1, firstly, four precast corner columns 11 of the peripheral building system 10 of the floor are placed at the corners of the building system 1, and two precast side columns 13 of the peripheral building system 10 of the floor are placed between every two precast corner columns 11. In addition, two internal precast column structures 43 of the internal building system 40 of the floor are arranged in the area surrounded by the precast corner columns 11 and the precast side columns 13. The precast corner columns 11, precast side columns 13, and the internal precast column structure 43 can each have a height of a single floor of the building system 1, and can be vertically suspended on the construction site by a crane (not shown). In other embodiments, the precast corner columns 11, precast side columns 13, and the internal precast column structure 43 can be positioned on the precast connection structure of the completed lower floor. For the connection method of the precast corner columns, precast side columns, and the internal precast column structure with the precast connection structure, please refer to the Republic of China invention patent application No. 111139260 filed on October 17, 2022, the entire contents of which are incorporated by reference into this disclosure.

As shown in FIG. 2 , the precast corner column 11 includes a plurality of tubular connecting structures 112 vertically embedded therein. One end of the connecting structure 112 is exposed to the top surface 111 of the precast corner column 11 and is configured to allow the vertical steel bar 9 to be inserted therein and engaged therewith. Similarly, the precast side column 13 includes a plurality of tubular connecting structures 132 vertically embedded therein. One end of the connecting structure 132 is exposed to the top surface 131 of the precast side column 13 and is configured to allow the vertical steel bar 9 (not shown in FIG. 2 ) to be inserted therein and engaged therewith.

After the precast column structure is positioned, the construction method of the building system 1 further includes fixing the precast connection structure on the corresponding precast column structure and coupling the precast connection structure in the horizontal direction. For example, as shown in FIG3 , the first precast connection structure 15 among the precast connection structures is suspended on the precast corner column 11 by a crane (not shown). The first precast connection structure 15 includes a first precast connection head 150 and two first beam structures 151, 152 that are substantially perpendicular to each other. The first precast connection head 150 is disposed above the precast corner column 11 and is configured to be connected to the precast corner column 11 at its bottom and to be connected to the two first beam structures 151, 152 that are substantially perpendicular to each other at its two adjacent sides. A plurality of through holes 155 are vertically formed through the first precast connection head 150. When the first precast connection head 150 is suspended on the precast corner column 11, as shown in FIG. 3, the vertical steel bar 9 passes through the through holes 155 and protrudes upward from the top surface 1503 of the first precast connection head 150.

As shown in FIG2 , the vertical steel bars 9 are pre-fixed on the precast corner column 11 before the first precast connection structure 15 is suspended on the precast corner column 11, and the plurality of vertical steel bars 9 are respectively penetrated by the plurality of through holes 155 during the lowering process of the first precast connection head 150. In some embodiments, the vertical steel bars 9 are inserted into the through holes 155 and connected with the connecting structure 132 in the precast corner column 11 after the first precast connection structure 15 is suspended on the precast corner column 11. In some embodiments, as shown in FIG3A , the first precast connection head 150 includes a plurality of stirrups 156 for enclosing the vertical steel bars disposed in the through holes 155.

As shown in FIG4 , the two first beam structures 151, 152 are respectively connected to two mutually perpendicular side surfaces 1501, 1502 of the first precast connection head 150. In other words, the two first beam structures 151, 152 extend outward from the two mutually perpendicular side surfaces 1501, 1502 of the first precast connection head 150. As shown in FIG3A , each of the first beam structures 151, 152 has a plurality of beam steel bars 153, 154, one end of which is disposed in the first precast connection head 150 and extends outward from the first precast connection head 150 in a horizontal direction. The ends of the plurality of beam steel bars 153, 154 located in the first precast connection head 150 include anchor heads 1532, 1542 with a larger width. The anchor heads 1532 and 1542 can increase the connection strength between the beam steel bars 153 and 154 and the first precast joint 150. The beam steel bars 153 and 154 of the first beam structures 151 and 152 are located at different heights in the first precast joint 150 and do not interfere with each other.

As shown in FIG3A , a plurality of rebar connectors 60 are pre-embedded in one end face 1511 of the first beam structure 151. The rebar connector 60 is tubular and has a first opening 61 and a second opening 62, which are located at two opposite ends of the rebar connector 60 and communicate with the hollow passage inside the rebar connector 60. The second opening 62 is fixedly connected to the end 1531 of the beam rebar 153. The first opening 61 is exposed to the end face 1511 of the first beam structure 151 and is configured to allow the beam rebar (not shown in FIG3A ) of another beam structure to be inserted therein and joined thereto. As shown in Figures 7E to 7H, a first through hole 63 and a second through hole 64 respectively penetrate the wall of the rebar connector 60 adjacent to the first opening 61 and the second opening 62, and are configured to connect to a slurry pipeline for conveying mortar material. The supply method of the slurry pipeline will be described in detail in the description of Figures 7D to 7I below.

Continuing to refer to FIG. 4 , after the positioning construction of the first precast connection structure 15 is completed, the positioning construction of the second precast connection structure 17 is continued. In one embodiment, the second precast connection structure 17 includes a second precast connection head 170 and two second beam structures 171, 172. The second precast connection head 170 is disposed above the precast side column 13, and is configured to connect the precast side column 13 with its bottom and to connect with two second beam structures 171, 172 that are substantially parallel and aligned with each other at its two opposite sides. In other words, the two second beam structures 171, 172 extend outward from two opposite side surfaces 1701, 1702 of the second precast connection head 170, respectively. Similar to the first beam structures 151 and 152, the second beam structures 171 and 172 also have a plurality of beam steel bars (FIG. 4 only shows the beam steel bar 174 of the second beam structure 172), one end of which is disposed in the second precast connection head 170 and extends outwardly from the second precast connection head 170 in a horizontal direction. The end of the beam steel bar of the second beam structure 171 is fixed in the steel bar connector 60 located at the end surface 1711, and the end of the beam steel bar 174 of the second beam structure 172 extends out from the end surface 1721 of the second beam structure 172. A plurality of through holes 175 are vertically penetrated through the second precast connection head 170. The through hole 175 is configured to allow vertical steel bars (not shown in FIG. 4 ) to pass through, thereby fixing the second precast connection head 170 to the precast side column 13. The second precast connection structure 17 further includes a plurality of beam steel bars 179, one end of which is disposed in the second precast connection head 170 and extends horizontally outward from the side surface 1703 of the second precast connection head 170. The side surface 1703 of the second precast connection head 170 faces the interior of the building and is located between the side surfaces 1701 and 1702. The beam steel bars 179 are configured to connect the field-cast beam structure 42 (see FIG. 1 ).

Referring to Figures 4-6, the construction steps of positioning the second precast connection structure 17 with the precast side column 13 and docking with the first precast connection structure 15 are described as follows: First, the second precast connection structure 17 is suspended to an offset position above the top surface 130 of the precast side column 13. As shown in Figure 4, at this offset position, the end surface 1721 of the second beam structure 172 is spaced a predetermined distance from the end surface 1511 of the first beam structure 151, and the second precast connection head 170 is offset from the top surface 130 of the precast side column 13, so that the second precast connection head 170 does not completely cover the top surface 130 of the precast side column 13. Then, along the direction indicated by the arrow in Figure 4, a lateral movement construction is performed on the second precast connection structure 17. During the lateral movement construction, the second precast connection structure 17 moves toward the first precast connection structure 15, so that the steel bar connector 60 fixed in the first beam structure 151 is sleeved with the beam steel bar 174 of the second beam structure 172, and the end surface 1721 of the second beam structure 172 is arranged adjacent to the end surface 1511 of the first beam structure 151. After the above-mentioned lateral movement construction is completed, as shown in FIG. 5, the second precast connection head 170 is aligned with the top surface 130 of the precast side column 13, and the second precast connection head 170 completely covers the top surface 130 of the precast side column 13. Next, as shown in FIG. 6 , after the second precast connection head 170 is aligned with the top surface 130 of the precast side column 13 , the vertical steel bar 9 is inserted into the through hole 175 on the second precast connection head 170 and engaged with the connecting structure 132 (see FIG. 3 ) in the precast side column 13 .

In one embodiment, mortar material (not shown) is filled between the precast connection head (e.g., the first precast connection structure 15, the second precast connection structure 17) and the precast column (e.g., the precast corner column 11, the precast side column 13) and filled in part of the space of the through hole 5 through which the vertical steel bar 9 is penetrated to fix the precast connection head, the precast column and the vertical steel bar. For the connection method of the precast connection head, the precast column and the vertical steel bar, please refer to the Republic of China invention patent application No. 111124472 filed on June 30, 2022, the entire contents of which are incorporated into this disclosure by reference.

In one embodiment, the method of connecting adjacent precast beam structures is described below with reference to FIGS. 7A-7C. As shown in FIGS. 7A-7C, a plurality of slurry pipelines 70 are buried in the area adjacent to the proximal end surface 1511 of the first beam structure 151, and are configured to supply mortar material to the steel bar connector 60 buried inside the first beam structure 151, or are configured to allow a small amount of excess mortar material to flow out of the steel bar connector 60 buried inside the first beam structure 151. As shown in FIG. 7B, each slurry pipeline 70 has a first end 71 and a second end 72. The first end 71 of the slurry pipeline 70 is connected to the steel bar connector 60. 7A, the second end 72 of the slurry pipeline 70 is exposed on the side surface 1512 and the upper surface 1513 of the first beam structure 151 to allow a transmission pipe to be connected or to allow a small amount of excess mortar material from the rebar connector 60 to be discharged to the outside.

In some embodiments, as shown in FIG. 7C , in an embodiment where the rebar connector 60 has a first through hole 63 and a second through hole 64, each of the first through hole 63 and the second through hole 64 of the rebar connector 60 is fluidly connected to a slurry pipeline 70 to receive mortar material from the slurry pipeline 70 or to discharge mortar material from the inside thereof to the slurry pipeline 70. Therefore, the number of the plurality of slurry pipelines 70 is the sum of the number of the first through hole 63 and the second through hole 64 of the rebar connector 60. The slurry pipeline 70 may be made of a material having a certain hardness to prevent deformation due to compression during the concrete setting period of the first beam structure 151 but allowing bending at the same time. For example, the slurry pipeline 70 may be formed by overlapping multiple layers of PVC plastic hoses.

7D-7I show schematic diagrams of a method for connecting the first beam structure 151 of the first precast connection structure 15 and the second beam structure 172 of the second precast connection structure 17 of the building system 1. As shown in FIG7D , the method for connecting the first beam structure 151 and the second beam structure 172 includes placing the end surface 1511 of the first beam structure 151 adjacent to the end surface 1721 of the second beam structure 172 to define a gap G therebetween.

Next, as shown in FIG. 7D , the left and right sides and the bottom of the gap G are sealed with a sealing element 92. In this embodiment, the sealing element 92 is a plate mold, which is attached to the side surface and the bottom surface of the first beam structure 151 and the second beam structure 172 to partially seal the gap G. In another embodiment, the sealing element 92 is a sealing film pneumatic tire. The sealing film pneumatic tire can be placed around the gap G in an uninflated state, and then gas is filled into the sealing film pneumatic tire to partially seal the gap G. In another embodiment, the top of the gap G is not covered by the sealing element 92.

Next, as shown in FIGS. 7D and 7E , a mortar material 93 (e.g., non-shrinkage mortar) is filled into the gap G through the grouting pipe 70. The mortar material 93 may be supplied by a transmission pipe 95, wherein the transmission pipe 95 may be connected to the mortar pipeline 70 arranged at the bottom on the side surface 1512 of the first beam structure 151, so as to supply the mortar material 93 to the inside of the steel bar connector 60 arranged at the bottom of the first beam structure 151 and adjacent to the side surface 1512. Furthermore, as shown in FIG. 7E , the mortar pipeline 70 connected to the transmission pipe 95 is fluidically connected to the second through hole 64 of the steel bar connector 60. That is, the transmission pipe 95 is connected to a side of the rebar connector 60 that is farther from the gap G. For clarity, the following content refers to the rebar connector 60' that is connected to the fluid transmission pipe 95 and is arranged at the bottom of the first beam structure 151 and close to the side surface 1512 (see FIG. 7B ).

As shown in Fig. 7E, when the transmission pipe 95 supplies the mortar material 93, the mortar material 93 enters the interior of the upstream steel bar connector 60' through the second through hole 64 of the upstream steel bar connector 60' from the mortar pipeline 70. As the mortar material 93 is continuously supplied, the mortar material 93 flows upward in the gap between the upstream steel bar connector 60' and the beam steel bar 153, and flows in the gap between the upstream steel bar connector 60' and the beam steel bar 174, thereby filling the interior of the upstream steel bar connector 60'. When the interior of the upstream rebar connector 60' is filled with the mortar material 93, a small amount of the mortar material 93 is discharged from the mortar pipeline 70 connected to the first through hole 63 of the upstream rebar connector 60', and the remaining mortar material 93 flows out of the upstream rebar connector 60' through the first opening 61 connected to the gap G.

As shown in FIG. 7F , as the mortar material 93 is continuously supplied from the transmission pipe 95 to the upstream rebar connector 60′ and flows toward the gap G, since the gap G is partially closed by the sealing element 92, the mortar material 93 will enter each rebar connector 60 through the first opening 61 of the remaining rebar connectors 60, and flow upward in the gaps between the rebar connectors 60 and the beam rebar 153, and flow upward in the gaps between the rebar connectors 60 and the beam rebar 174. Furthermore, as shown in FIG. 7G , when the individual rebar connectors 60 are fully filled with the mortar material 93, the mortar material 93 in the rebar connector 60 will be discharged from the second end 72 of the mortar pipeline 70 connected to the corresponding rebar connector 60 to the outside of the first beam structure 151. In this embodiment, the transmission pipe 95 only supplies the mortar material through a single mortar pipeline 70, so the construction personnel can confirm the filling status of the mortar material in the rebar connector 60 by observing the mortar material flowing out from each mortar pipeline 70. For example, as shown by the arrows shown above in FIGS. 7F and 7G , when the mortar material flows out from the second end 72 of the mortar pipeline 70 connected to the rebar connector 60 located above the first beam structure 151 , it means that the interior of the rebar connector 60 located at the top of the first beam structure 151 has been fully filled with the mortar material.

In one embodiment, as mortar material is sequentially discharged from the mortar pipelines 70 connected to different rebar connectors 60, if no mortar material is discharged from the second ends 72 of one or more mortar pipelines 70, it can be determined that the rebar connectors 60 connected to the mortar pipelines 70 from which no mortar material is discharged are not fully filled with mortar material. At this time, the construction personnel can further insert the transmission pipe 95 into the mortar pipelines 70 from which no mortar material is discharged, and supply mortar material to the rebar connectors 60 that may not be fully filled with mortar material one by one. In the embodiment where the rebar connector 60 has the first through hole 63 and the second through hole 64, the construction personnel can judge whether the rebar connector 60 is fully filled with mortar material by observing whether the mortar material is discharged from another mortar pipeline 70 connected to the same rebar connector 60.

7H , after the filling process of the mortar material is completed, the method of connecting the first beam structure 151 and the second beam structure 172 further includes inserting a plurality of plugs 94 into the second end 72 of the mortar pipeline 70 exposed to the surface of the first beam structure 151 to prevent the mortar material from flowing out of the rebar connector 60 before solidification. In one embodiment, the plug 94 is inserted into one end of the mortar pipeline 70 after all the rebar connectors 60 are fully filled with the mortar material. In another embodiment, the plug 94 is inserted into the second end 72 of the mortar pipeline 70 connecting the rebar connector 60 when it is confirmed that the individual rebar connector 60 has been fully filled with the mortar material.

As shown in FIG. 7H , the center of the end surface 1511 of the first beam structure 151 further includes a plurality of grooves 157 (see FIG. 3 ) formed thereon. During the process of the mortar material 93 filling the gap G, part of the mortar material 93 will flow into the groove 157. After the mortar material 93 solidifies, the mortar material 93 in the groove 157 forms a plurality of joint structures extending toward the inside of the first beam structure 151, which further enhances the joint strength between the first beam structure 151 and the second beam structure 172.

After the mortar material is fully filled in the steel bar connector, the method of connecting the first beam structure 151 and the second beam structure 172 further includes removing the plug 94 and attaching a decorative panel 91 (e.g., stone) on the outer surface of the first beam structure 151 and the second beam structure 172. The decorative panel 91 is arranged at the outermost periphery of the building system and is used to decorate the appearance of the building system. In one embodiment, as shown in FIG. 7A, before the first beam structure 151 and the second beam structure 172 are filled with mortar material, the decorative panel 91 is pre-attached to a portion of the upper surface 1513 of the first beam structure 151 and the upper surface 1723 of the second beam structure 172, but the decorative panel 91 does not cover the area where the second end 72 of the slurry pipeline 70 is arranged. Furthermore, as shown in FIG. 7I , after the mortar material is filled between the first beam structure 151 and the second beam structure 172 and the adjacent areas, the area on the upper surface 1513 of the first beam structure 151 or the upper surface 1723 of the second beam structure 172 where the second end 72 of the mortar pipeline 70 is disposed is further covered with the decorative panel 91. The decorative panel 91 can be attached to the first beam structure 151 or the second beam structure 172 using a material such as an adhesive. By attaching most of the decorative panel 91 to the precast structure in advance and only attaching the decorative panel 91 in a part of the area on the construction site, the construction time on the construction site can be effectively shortened.

It should be understood that in the above-mentioned embodiments, the steel bar connectors and the beam steel bars used to connect the beam structures can be interchanged with each other and are not limited to the forms described in the above-mentioned embodiments. For example, the end surface 1511 of the first beam structure 151 may include a plurality of beam steel bars extending outward in the horizontal direction, and the end surface 1721 of the second beam structure 172 may include a plurality of pre-set steel bar connectors. When the first beam structure 151 and the second beam structure 172 are butt-joined, the steel bar connector of the second beam structure 172 is sleeved with the beam steel bars of the first beam structure 151, and mortar material is filled in the manner as shown in Figures 7A-7I to fix the first beam structure 151 and the second beam structure 172.

Continuing with reference to FIG8 , the first precast connection structure 15 and the second precast connection structure 17 located at the bottom of FIG1 are respectively positioned on the precast corner column 11 and the precast side column 13 using the method described in the embodiment of FIGS. 2-6 , and are connected to each other using the method described in the embodiment of FIGS. 7D-7I , thereby forming the building structure of FIG9 . As shown in Fig. 9, since the first precast connection structure 15 located on a single side of the building system is first positioned on the precast corner column 11, and then the two second precast connection structures 17 are positioned on the precast side column 13, there is a buffer space between the two second precast connection structures 17 to allow the second precast connection structure 17 on the right side shown in Fig. 9 to be pre-moved horizontally as shown in Fig. 4. Then, as shown in Fig. 10, the building system 1 further includes a precast beam structure 20 and a field-cast connecting structure 30 to connect the beam structure of the two adjacent precast connection structures (e.g., the two second precast connection structures 17).

Referring to FIG. 10 , it is an exploded view of a structure in which a precast beam structure 20 and a field-cast connecting structure 30 are placed between two second precast connecting structures 17, and shows a method of connecting two adjacent precast connecting structures 17 by means of the precast beam structure 20 and the field-cast connecting structure 30. The precast beam structure 20 is generally in an elongated shape, has a first end 201 and a second end 202 opposite to each other, and includes a plurality of beam steel bars 21 embedded therein (see FIG. 12 ). The beam steel bars 21 extend along the length direction of the precast beam structure 20, and one end thereof extends outward from the second end 202 of the precast beam structure 20. The first end 201 of the precast beam structure 20 is pre-embedded with a plurality of steel bar connectors 60. The steel bar connector 60 is configured to connect the beam steel bar 173 extending outwardly in the horizontal direction from the second beam structure 171 of the second precast connection structure 17 to the beam steel bar 21 in the precast beam structure 20. For the purpose of clear description, the beam steel bar 21 is referred to as the "first beam steel bar" and the beam steel bar 173 is referred to as the "second beam steel bar" in the following description. In one embodiment, the length L2 of the body of the precast beam structure 205 is less than the spacing distance L1 between the end faces of the two adjacent precast connection structures to be connected. The length L2 of the body of the precast beam structure 205 refers to the distance from the first end 201 of the precast beam structure 205 to the free end of the first beam steel bar 21.

The method of connecting the precast beam structure 20 with the first of the two adjacent precast connection structures 17 (the second precast connection structure 17 on the right side of FIG. 10 ) is described as follows: First, the precast beam structure 20 is suspended between the two second beam structures 171 of the two second precast connection structures 17. Then, the precast beam structure 20 is subjected to a lateral movement operation. During the lateral movement, the precast beam structure 20 moves toward the first precast connection structure 17 (right side of FIG. 10 ), so that the steel bar connector 60 in the precast beam structure 20 is sleeved on the second beam steel bar 173 of the first precast connection structure 17 (right side of FIG. 10 ), and the end face 173 of the second beam structure 171 is adjacent to the first end 201 of the precast beam structure 20, as shown in FIG. 11 . Then, a method similar to the above-mentioned method of connecting two beam structures described in FIGS. 7D-7I is performed to complete the butt connection construction between the first precast connection structure 17 (right side of FIG. 10 ) and the precast beam structure 20.

As shown in FIG12 , the field-cast connecting structure 30 is configured to connect the precast beam structure 20 with the second of the precast connecting structures 17 (the second precast connecting structure 17 on the left side of FIG10 ). In one embodiment, the field-cast connecting structure 30 includes a plurality of fixed steel bar connectors 31, a plurality of connecting steel bars 32, a plurality of stirrups 34, and a plurality of movable steel bar connectors 35. The fixed steel bar connector 31 is pre-embedded in the end surface of the second of the second precast connecting structure 17 (the left side of FIG10 ). The inner wall surface of the fixed steel bar connector 31 may include a threaded structure, and the connecting steel bar 32 is connected to the fixed steel bar connector 31 via the threaded structure. The movable steel bar connector 35 is tubular and is configured to be movably mounted on the first beam steel bar 21 and the connecting steel bar 32. A plurality of stirrups 34 are mounted on the second beam steel bar 21 of the precast beam structure 20 and the outer side of the movable steel bar connector 35 to enclose the second beam steel bar 21.

The method of connecting the precast beam structure 20 with the second precast connection structure 17 (left side of FIG. 10) via the field-cast connection structure 30 is described as follows: First, the movable steel bar connector 35 and the stirrup 34 of the field-cast connection structure 30 are sleeved on the first beam steel bar 21. As shown in FIG. 10, the movable steel bar connector 35 and the stirrup 34 of the field-cast connection structure 30 are pre-set on the first beam steel bar 21 of the precast beam structure 20, and are hoisted together with the precast beam structure 20 between two adjacent second precast connection structures 17. Next, as shown in FIG12, after the precast beam structure 20 and the first of the two adjacent second precast connection structures 17 (the right side of FIG10) are connected, the connection steel bar 32 is connected to the fixed steel bar connector 31 of the second of the second precast connection structure 17 (the left side of FIG10). Next, as shown in FIG13, the movable steel bar connector 35 is moved so that the opening at one end is sleeved on the first beam steel bar 21, and the opening at the other end is sleeved on the connection steel bar 32. Next, mortar material is supplied to the movable steel bar connector 35 so that the movable steel bar connector 35 is fixedly connected to the first beam steel bar 21 and the connection steel bar 32. Next, as shown in FIG14 , stirrups 34 are moved so that stirrups 34 are evenly distributed between the second precast connection structure 17 and the precast beam structure 20. Finally, the field-cast connection structure 30 is surrounded by a template and concrete is poured therein to form a concrete structure covering the field-cast connection structure 30 including stirrups 34. The concrete structure can cover the field-cast connection structure 30 after all the precast connection structures of the current floor are connected. Alternatively, the concrete structure can be constructed immediately after the stirrups 34 are moved. The detailed method for forming the concrete structure will be further described later with respect to the embodiment of FIG19 .

After the precast connection structure on one side of the building system 1 is positioned and connected, the remaining precast connection structure of the floor is then positioned and connected through a similar construction method. As shown in Figure 16, the precast beam structure 20 and the field-cast connection structure 30 are formed on the opposite sides (hereinafter referred to as the left side and the right side) of the building system 1. The other two sides of the building system 1 that are perpendicular to the left side and the right side (hereinafter referred to as the front side and the rear side) do not have the precast beam structure 20 and the field-cast connection structure 30 set. In one embodiment, during the construction of the left and right sides of the building system 1, the two first precast connection structures 15 located on the two precast corner columns 11 are constructed earlier than the two second precast connection structures 17 located on the two precast side columns 13, and the works that need to be constructed on site, such as a balcony, are constructed between the two second precast connection structures 17, and then the precast beam structure 20 and the on-site cast connecting structure 30 are further used to connect the two second precast connection structures 17. In contrast, during the construction of the front and rear sides of the building system 1, the precast beam structure 20 and the on-site cast connecting structure 30 are omitted.

However, it should be understood that the present disclosure is not limited to the above-mentioned embodiments, and the peripheral building system may be provided with a precast beam structure 20 and a field-cast connecting structure 30 on a single side, and the remaining sides are not provided with a precast beam structure 20 and a field-cast connecting structure 30. In other embodiments, after the first precast connecting structure 15 and the second precast connecting structure 17 on the left side as shown in FIG6 are connected, the remaining precast connecting structures are connected in sequence along a clockwise direction, and finally the peripheral building system 10 is completed through the precast beam structure 20 and the field-cast connecting structure 30 as shown in FIG10.

In one embodiment, two adjacent precast connection structures (e.g., two second precast connection structures 17) connected via a precast beam structure 20 and a field-cast connection structure 30 have two beam structures (e.g., second beam structures 171, 172) of different lengths. For example, as shown in FIG. 11, the length of one of the adjacent precast beam structures 20 or field-cast connection structures 30 (e.g., second beam structure 171) of the two second beam structures is shorter than the length of the other (e.g., second beam structure 172). By reducing the length of the precast connection structure, it is convenient to transport the precast connection structure and reduce the weight of the precast connection structure.

After completing the construction step of the outer building system 10 of the building system 1, the construction method of the building system 1 further includes constructing two field-cast column structures 41 of the inner building system 40. In one embodiment, the two field-cast column structures 41 are arranged on the two field-cast column structures (not shown) of the next floor. In one embodiment, the field-cast column structures 41 are field-cast on site at the construction site before, after or during the hanging operation of the precast corner columns 11, the precast side columns 13 and the inner precast column structures 43.

As shown in FIG17 , the construction method of the building system 1 further includes positioning two internal precast connection structures 44 and 45 on two internal precast column structures 43, wherein the internal precast connection structure 44 is positioned on the internal precast column structure 43 before the internal precast connection structure 45. As shown in FIG16 , a plurality of vertical steel bars 9 are pre-fixed on the internal precast column structure 43 before the internal precast connection structure 44 is suspended on the internal precast column structure 43, and during the lowering process of the internal precast connection structure 44 through the lifting, the plurality of vertical steel bars 9 pass through the plurality of through holes inside the internal precast connection structure 44. Furthermore, after the internal precast connection structure 44 is suspended on the internal precast column structure 43, the lateral movement construction as shown in FIG. 4 is performed to position the internal precast connection structure 45 on another internal precast column structure 43 and connect it with the internal precast connection structure 44, as shown in FIG. 17 .

As shown in FIG. 17 , the internal precast connection structure 44 includes an internal precast connection head 440 and two internal precast beam structures 441, 442. The internal precast connection head 440 is disposed above the internal precast column structure 43. The two internal precast beam structures 441, 442 are disposed on two vertical adjacent side surfaces of the internal precast connection head 440. A plurality of beam steel bars extend outward in a horizontal direction from the side surface of the internal precast connection head 440 where the internal precast beam structure is not disposed. The internal precast connection structure 45 includes an internal precast connection head 450 and an internal precast beam structure. The internal precast connection head 450 is disposed above another precast column structure 43. The internal precast beam structure 451 is disposed on the side surface of the internal precast connection head 450 adjacent to the beam structure 441. A plurality of beam steel bars extend outward in a horizontal direction from the side surface of the internal precast connection head 450 where the internal precast beam structure is not disposed.

As shown in FIG. 18 , after the positioning of the internal precast connection head 440 of the building system 1 is completed, the internal beam structure 42 of the internal building system 40 is constructed. The internal beam structure 42 is connected between two adjacent internal column structures 41. Alternatively, the internal beam structure 42 is connected between the internal column structure 41 and the precast connection heads 440, 450. Alternatively, the internal beam structure 42 is connected between the internal precast connection structures 44, 45 and the second precast connection structure 17 of the peripheral building system 10.

The outer building system 10 of the building system 1 is completed first before the inner building system 40 is constructed, and the inner beam structure 42 in the inner building system 40 is constructed by on-site casting. This construction method does not require the construction scaffolding to be set up outside the building system 1 and can reduce the construction cost of the building system and increase the flexibility of the construction process.

Referring to FIG. 19 , a plan view of a floor of the building system 1 is shown. In one embodiment, the site-cast joint structure 30 is provided on a platform 46 adjacent to the building system 1 that is open to the outside and extends outward. When the site-cast joint structure 30 is constructed, the construction personnel can stand on the platform 46 to move and position the movable steel bar connector 35 ( FIG. 14 ) and form a concrete structure 36 by setting a template and pouring concrete therein so as to cover the site-cast joint structure 30. Since the construction personnel are not exposed to the risk of the outside of the building system 1, there is no need to set up an additional construction frame. In addition, as shown in FIG. 19 , the building system 1 includes two patios 48 and 49, wherein the area of the patio 48 is larger than the area of the patio 49. Since the internal building system 40 of the adjacent patio 48 includes a part of the precast beam structure (e.g., the internal precast beam structures 441, 442, 451 shown in FIG. 17), and the internal beam structures 42 located on both sides of the patio 48 that need to be constructed by on-site casting are provided on a platform 47 of the adjacent building system 1 that is open to the outside and extends outward, it is not necessary to set up a construction frame in the patio 48. On the other hand, since the internal beam structures 42 located on both sides of the patio 49 that need to be constructed by on-site casting are provided on a platform 47 of the adjacent building system 1 that is open to the outside, it is not necessary to set up a construction frame in the patio 49.

By means of the above configuration, the building system 1 can reduce the usage of the construction scaffolding to a minimum during the construction process, thereby reducing the construction cost of the building system 1 and avoiding the generation of unnecessary construction waste.

Referring to FIG. 20 , a plan view of one floor of the building system 1′ is shown. The same or similar elements of the building system 1 and the building system 1′ are represented by the same symbols, and their structural features will not be described again. The difference between the building system 1 and the building system 1′ is that the structures of the peripheral building systems of the two are slightly different. As shown in FIG. 19 and FIG. 20 , the building system 1′ replaces the precast connection structures 15 and 17 of the building system 1 with different structures with precast connection structures 15′, 17′, and 19, and the building system 1′ further includes a plurality of precast beam structures 25. The precast connection structure 15′ is connected to the precast connection structure 17′ or the precast connection structure 19 through the precast beam structure 25. The two precast connection structures 17' are connected via the precast beam structure 20 and the field cast connection structure 30. The two precast connection structures 19 are directly coupled to each other. In one embodiment, the precast connection structures 15', 17', 19 and the precast beam structure 25 are connected to each other in a manner similar to that disclosed in Figures 2-6 and 7A-7I, and the precast connection structure 17' is connected in a manner similar to that disclosed in Figures 10-14, which will not be repeated here for simplicity of description.

In one embodiment, the length of the horizontally extending beam structure on the precast connection structure 15', 17', 19 of the building system 1' is shorter than the length of the horizontally extending beam structure on the precast connection structure 15, 17 of the building system 1, thereby increasing the convenience of transportation of the precast connection structure 15', 17', 19. In one embodiment, the beam structures 151', 152' of the precast connection structure 15' of the building system 1' have lengths L3 and L4, respectively. The lengths L3 and L4 are at least greater than 1 meter, so that the connection position of the beam structures 151', 152' and the adjacent structure is located outside the plastic hinge area of the precast connection structure 15', so as to enhance the structural strength of the precast connection structure 15'.

The disclosed embodiments provide a construction method for a building system, which has at least the following technical advantages: (1) by using a precast method to construct most of the structure of the peripheral building system, only using a site-cast connecting structure in some areas, it is helpful to standardize the manufacturing process of the building system, reduce variable factors in the construction process, and thus improve the quality of the building; (2) by using precast structures, the construction speed is increased and the site environment is improved; and (3) by setting the site casting construction site in a balcony or other place, the use of a construction scaffold is avoided, which helps to reduce production costs and reduce environmental impact.

The embodiments described above are only for illustrating the technical ideas and features of the present invention, and their purpose is to enable people familiar with this art to understand the content of the present invention and implement it accordingly. They cannot be used to limit the patent scope of the present invention. Equivalent changes or modifications made according to the spirit revealed by the present invention should still be covered by the patent scope of the present invention.

1: Building system 9: Vertical reinforcement 10: Peripheral building system 11: Precast corner column 13: Precast side column 15: Precast connection structure/first precast connection structure 15’: Precast connection structure 17: Precast connection structure/second precast connection structure 17’: Precast connection structure 19: Precast connection structure 20: Precast beam structure 21: Beam reinforcement/first beam reinforcement 25: Precast beam structure 30: Field cast connection structure 31: Fixed reinforcement connector 32: Connecting reinforcement 34: Stirrups 35: Movable reinforcement connector 40: Internal building system 41: Internal column structure 42: Internal beam structure 43: Internal precast column structure 44: Internal precast connection structure 45: Internal precast connection structure 46: Platform 47: Platform 48: Patio 49: Patio 60: Rebar connector 61: First opening 62: Second opening 63: First through-hole 64: Second through-hole 70: Slurry pipe 71: First end 72: Second end 91: Decorative panel 92: Sealing element 93: Mortar material 94: Plug 111: Top surface 112: Connection structure 131: Top surface 132: Connecting structure 150: First precast joint 151: First beam structure 152: First beam structure 153: Beam reinforcement 154: Beam reinforcement 155: Perforation 157: Groove 170: Second precast joint 171: Second beam structure 172: Second beam structure 173: Beam reinforcement/Second beam reinforcement 174: Beam reinforcement 175: Perforation 179: Beam reinforcement 201: End face 202: End face 440: Internal precast joint 441: Internal precast beam structure 442: Internal precast beam structure 450: Internal precast joint 451: Internal precast beam structure 1501: Side surface 1502: Side surface 1503: Top surface 1511: End surface 1512: Side surface 1513: Top surface 1532: Anchor head 1542: Anchor head 1701: Side surface 1702: Side surface 1703: Side surface 1711: End surface 1721: End surface 1722: Side surface 1723: Top surface 1721: End surface G: Gap L1: Distance L2: Length L3: Length L4: Length

FIG. 1 shows a schematic diagram of a building system in one embodiment of the present invention.

FIG. 2 shows a schematic diagram of the manufacturing method of the building system in the above embodiment of the present invention.

FIG. 3 shows a second schematic diagram of the manufacturing method of the building system in the above embodiment of the present invention.

FIG. 3A is a top view showing a partial structure of the first pre-cast connection structure in the above embodiment of the present invention.

FIG. 4 shows a third schematic diagram of the manufacturing method of the building system in the above embodiment of the present invention.

FIG. 5 shows a fourth schematic diagram of the manufacturing method of the building system in the above-mentioned embodiment of the present invention.

FIG. 6 shows a fifth schematic diagram of the manufacturing method of the building system in the above-mentioned embodiment of the present invention.

FIG. 7A is a schematic diagram showing two butted precast beam structures of the building system in the above-mentioned embodiment of the present invention.

FIG7B shows a cross-sectional view of a precast beam structure of the building system in the above-mentioned embodiment of the present invention in the extension direction perpendicular to the precast beam structure.

FIG. 7C shows a cross-sectional view of two butted precast beam structures of the building system in the above-mentioned embodiment of the present invention in the extension direction parallel to the precast beam structures.

7D-7I are schematic diagrams showing a method for docking two precast beam structures of the building system in the above-mentioned embodiment of the present invention.

FIG8 shows a sixth schematic diagram of the manufacturing method of the building system in the above-mentioned embodiment of the present invention.

FIG. 9 shows a seventh schematic diagram of the manufacturing method of the building system in the above-mentioned embodiment of the present invention.

FIG. 10 is a schematic diagram showing an eighth method for manufacturing the building system in the above-mentioned embodiment of the present invention.

FIG. 11 is a ninth schematic diagram showing a method for manufacturing a building system according to the above-mentioned embodiment of the present invention.

FIG. 12 is a schematic diagram showing a tenth method for manufacturing the building system in the above-mentioned embodiment of the present invention.

FIG. 13 is a schematic diagram showing the eleventh method for manufacturing the building system in the above-mentioned embodiment of the present invention.

FIG. 14 is a twelfth schematic diagram showing a method for manufacturing a building system in the above-mentioned embodiment of the present invention.

FIG. 15 is a thirteenth schematic diagram showing a method for manufacturing a building system in the above-mentioned embodiment of the present invention.

FIG. 16 is a schematic diagram showing a fourteenth method for manufacturing the building system in the above-mentioned embodiment of the present invention.

FIG. 17 is a schematic diagram showing the fifteenth method for manufacturing the building system in the above-mentioned embodiment of the present invention.

FIG. 18 is a schematic diagram showing a sixteenth method for manufacturing the building system in the above-mentioned embodiment of the present invention.

FIG. 19 is a schematic plan view showing a building system in another embodiment of the present invention.

FIG. 20 shows a schematic plan view of a building system in another embodiment of the present invention.

1: Building system

10: Peripheral building system

11: Pre-cast corner columns

13: Pre-cast side columns

15: Pre-cast connection structure/first pre-cast connection structure

17: Pre-cast connection structure/second pre-cast connection structure

20: Precast beam structure

30: Field cast connection structure

40: Internal building system

41: Internal column structure

42: Internal beam structure

43: Internal pre-cast column structure

44: Internal pre-cast connection structure

45: Internal pre-cast connection structure

150: First pre-cast connector

151: First beam structure

152: First beam structure

170: Second pre-cast connector

171: Second beam structure

172: Second beam structure

Claims (11)

A building system, comprising: A peripheral building system, located at the periphery of the building system and comprising: A plurality of precast corner columns, arranged at a plurality of corners of the peripheral building system; A plurality of precast side columns, arranged on the side of the peripheral building system and located between two of the precast corner columns; A plurality of precast connecting structures, each comprising a precast connecting head fixed to one of the precast corner columns or one of the precast side columns, and two beam structures extending horizontally from two sides of the precast connecting head; A precast beam structure; and A field-cast connecting structure connected to one end of the precast beam structure; The beam structure of one of the precast connection structures is directly coupled to the beam structure of another of the adjacent precast connection structures, or is connected via the precast beam structure and the field-cast connection structure; and an internal building system surrounded by the external building system and comprising: a plurality of internal column structures; and a plurality of internal beam structures connected between two of the internal column structures or between one of the internal column structures and the precast connection head of one of the precast connection structures. A building system as described in claim 1, wherein the precast connection structures include: A plurality of first precast connection structures, each including a first precast connection head fixed to one of the precast corner columns, and two first beam structures extending horizontally from two adjacent sides of the first precast connection head, the two first beam structures being substantially perpendicular to each other; and A plurality of second precast connection structures, each including a second precast connection head fixed to one of the precast side columns, and two second beam structures extending horizontally from two opposite sides of the second precast connection head, the two second beam structures being substantially parallel to each other. A construction system as described in claim 2, wherein a first end of the precast beam structure is connected to a second beam structure of one of the second precast connecting structures, and a second end of the precast beam structure is connected to a second beam structure of another adjacent one of the second precast connecting structures via the field-cast connecting structure. A construction system as described in claim 3, wherein the first end of the precast beam structure has a plurality of rebar connectors pre-embedded therein, and the second beam structure of one of the second precast connection structures has a plurality of first beam rebars extending from an end face, and the plurality of rebar connectors are sleeved on the plurality of first beam rebars. A construction system as described in claim 4, wherein the precast beam structure includes a plurality of second beam steel bars extending from a second end of the precast beam structure, and the field-cast connection structure includes: A plurality of fixed steel bar connectors pre-embedded in an end face of the second beam structure adjacent to another of the second precast connection structures; A plurality of connecting steel bars connected to the plurality of fixed steel bar connectors; A plurality of stirrups sleeved on the plurality of second beam steel bars of the precast beam structure; A plurality of movable steel bar connectors, each of which has one end connected to a corresponding one of the plurality of connecting steel bars, and each of which has one end connected to a corresponding one of the plurality of second beam steel bars; and A concrete structure enclosing the plurality of stirrups. A building system as described in claim 2, wherein the two second beam structures extending from two opposite sides of the second precast connecting head have different lengths, and the length of one of the two second beam structures adjacent to the precast beam structure or the field-cast connection structure is shorter than the length of the other. A construction system as described in claim 2, wherein one end of a first beam structure of one of the plurality of first precast connection structures has a plurality of steel bar connectors pre-embedded therein, wherein one end of a second beam structure of one of the plurality of second precast connection structures has a plurality of beam steel bars extending from its end surface, and the plurality of steel bar connectors are sleeved on the plurality of beam steel bars, thereby the first beam structure of one of the plurality of first precast connection structures and the second beam structure of one of the plurality of second precast connection structures are coupled to each other. A building system as described in any one of claims 1-5, wherein the cast-in-place connection structure is disposed adjacent to an open platform of the building system. A building system as described in any one of claims 1-5, wherein at least one of the internal column structures is an internal precast column, and the internal building system further comprises: an internal precast connection structure, comprising an internal precast connection head fixed to one of the internal precast columns, and an internal precast beam structure extending horizontally from the side of the internal precast connection head; wherein the building system comprises a patio, one side of which is defined by the internal precast beam structure of the precast connection structure. A construction method for a building system, comprising: Constructing an external structural unit of the building system, comprising: Providing a plurality of precast corner columns, the precast corner columns being located at a plurality of corners of the peripheral building system; Providing a plurality of precast side columns, the precast side columns being arranged on the side of the peripheral building system and being located between two of the precast corner columns; Hanging a plurality of precast connection structures on one of the precast corner columns or one of the precast side columns, and fixing a precast connection head of the precast connection structures on one of the precast corner columns or one of the precast side columns; and Connecting two adjacent beam structures extending horizontally from each of the precast connection heads in the precast connection structures, wherein at least two of the beam structures are connected by a precast beam structure and a field-cast connection structure; and Constructing an internal building system surrounded by the external structural unit in the building system, including: Making a plurality of internal column structures by field casting; and Making a plurality of internal beam structures by field casting to connect between two of the internal column structures or between one of the internal column structures and the precast connection head of one of the precast connection structures. The method as described in claim 10, wherein the steps of constructing the internal building system include: Providing a precast internal column structure; Hanging and fixing a precast internal connection structure on the precast internal column structure; and Connecting the internal precast connection structure to the internal beam structures.

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