TW202409384A - Architecture structure unit and basement outer wall structure - Google Patents

Abstract

The present application relates to an architecture structure unit and a basement outer wall structure as well as utilizing a plurality of the architecture structure units to construct the basement outer wall structure. The architecture structure unit comprises a precast column, a first wall, a second wall and an enhanced structure. One end of the first wall is connected to a first side face of the precast column. A first interface is defined between the end of the first wall and the first side face of the precast column. One end of the second wall is connected to a second side face of the precast column. A second interface is defined between the end of the second wall and the second side face of the precast column. The enhanced structure extends along and is connected to a side face of the first wall, at least a portion of the precast column, a side face of the second wall. The enhanced structure covers a side of the first interface and a side of the second interface.

Description

Building structural units and basement exterior wall structures

The invention relates to a building structural unit and a basement exterior wall structure composed of a plurality of the building structural units.

Common basement exterior wall structures include columns on the periphery of the basement and walls connected between the columns. However, since there may be groundwater outside the basement exterior wall structure, and it is difficult for conventional basement exterior wall structures to achieve a completely tight connection between the wall and the column, there is often a problem of water seepage at the interface between the wall and the column.

Therefore, how to effectively solve the problem of leakage of basement exterior wall structures without significantly increasing construction costs and construction complexity is what the industry is looking forward to.

Therefore, in order to achieve the above-mentioned purpose, one aspect of the present invention is related to a building structure unit, including a precast column, a first wall, a second wall and an additional structure. One end of the first wall is connected to a first side of the precast column. A first interface is defined between the end of the first wall and the first side of the precast column. One end of the second wall is connected to a second side of the precast column. A second interface is defined between the end of the second wall and the second side of the precast column. The additional structure extends and connects along a side of the first wall, at least a first portion of the precast column, and a side of the second wall. The additional structure covers one side of the first interface and one side of the second interface.

Another aspect of the present invention relates to a basement exterior wall structure, which is a closed structure composed of a plurality of building structural units as described above.

The building structure unit provided by the present invention and the basement outer wall structure composed of the building structure unit can effectively prevent the problem of water leakage of the basement outer wall structure without affecting the appearance of the basement. In addition, the additional structure provided by the present invention can also increase the structural strength and stability between the walls and columns of the basement outer wall structure.

In order to have a clearer understanding of the characteristics, content, advantages and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and in the form of embodiments. The drawings used are only for their main purpose. The proportions and arrangement relationships of the attached drawings are for illustration and auxiliary description purposes, and should not be interpreted to limit the patentable scope of the present invention.

Please refer to FIG. 1 and FIG. 2, wherein FIG. 2 shows a perspective structural diagram of a first embodiment of a building structure unit 11 used to construct the basement exterior wall structure 1 of FIG. 1 of the present disclosure. The building structure unit 11 has a precast column 111 that supports the upper and lower floors and beams (not shown) of the basement. The precast column 111 is pre-embedded with a plurality of steel bar connectors 1115 along its height during the precasting process. Each of the plurality of steel bar connectors 1115 includes a connecting joint 1117 and an anchoring steel bar 1114 extending from the connecting joint 1117 to the inside of the precast column 111. The connecting joint 1117 is exposed at a first side surface 1111 of the pre-cast column 111 and a second side surface 1112 opposite to the first side surface 1111.

In the first embodiment, the corresponding joints at the same height on the first side 1111 and the second side 1112 of the precast column 111 can also share an anchoring steel bar 1114. That is, during the precasting process of the precast column 111, a plurality of steel bar connectors 1115 extending horizontally from one side of the precast column 111 to the other opposite side are pre-embedded along its height. Each steel bar connector 1115 includes a joint 1117 exposed on two opposite sides of the precast column 111, and an anchoring steel bar 1114 connecting the two joints 1117.

In the first embodiment, during construction, main bars and stirrups for constructing the first wall 112 and the second wall 113 which are substantially parallel to each other are respectively arranged on the first side surface 1111 of the precast column 111 and the second side surface 1112 opposite to the first side surface 1111, and a plurality of transverse steel bars 1122 and 1132 extending horizontally out of one end of the wall are additionally arranged along the height of the wall. The number of the plurality of transverse steel bars 1122 and 1132 of the wall is the same as the number of the steel bar connectors 1115 on the corresponding side surface of the precast column 111. One end of the first wall 112 is connected to the first side surface 1111 of the pre-cast column 111 ; one end of the second wall 113 is connected to the second side surface 1112 of the pre-cast column 111 .

In the first embodiment, the continuing joints 1117 of the steel bar connector 1115 are used to respectively continue with a plurality of transverse steel bars 1122 and 1132 extending from the end of the first wall 112 and the end of the second wall 113, whereby the steel bars The transverse steel bars 1122 of the first wall 112 corresponding to the connector 1115 are connected to the transverse steel bars 1132 of the second wall 113, so that the shear force experienced by the wall can be effectively transmitted to the prefabricated wall through the transverse steel bars 1122, 1132 and the steel bar connector 1115. Cast columns 111 are used to increase the shear strength of the building structural unit 11.

In the first embodiment, a first interface 115 is defined between an end of the first wall 112 and the first side surface 1111 of the precast column 111; a second interface 116 is defined between an end of the second wall 113 and the second side surface 1112 of the precast column 111. The first wall 112 and the second wall 113 have a thickness d of 600 mm.

In the first embodiment, the building structure unit 11 is a part of the basement outer wall structure 1, wherein the first wall 112 and the second wall 113 are further provided with a first steel bar 1123 and a second steel bar 1133 substantially perpendicular to the wall surface. The first steel bar 1123 and the second steel bar 1133 extend outward from the corresponding wall and are exposed to the outside of the wall, and a hook is formed at the end of the outside of the wall. In addition, main bars and stirrups for constructing the additional structure 114 and at least one third steel bar 1142 extending horizontally are provided on the outside of the precast column 111, the first wall 112 and the second wall 113. The third steel bar 1142 is substantially perpendicular to the first steel bar 1123 and the second steel bar 1133. The third steel bar 1142 extends inside the reinforced structure 114 along a side surface 1141 of the reinforced structure 114 and has two ends formed with hooks and connected to the hooks of the ends of the first steel bar 1123 and the second steel bar 1133 exposed outside the wall.

During construction, main bars and stirrups are set around the first steel bar 1123, the second steel bar 1133 and the third steel bar 1142, and on the outer side of the Xuan column 111, the first wall 112, the second wall 113, the first steel bar 1123 and the third steel bar 1142. A formwork is set around the space defined by the second steel bar 1133 and the third steel bar 1142 and grouted to form an additional structure 114 . The additional structure 114 integrally and continuously extends and is connected along one side 1121 of the first wall 112 , at least the first part 1113 of the pillar 111 , and one side 1131 of the second wall 113 to cover one of the first interfaces 115 side and one side of the second interface 116, so that the gap in the first interface 115 and the second interface 116 is isolated from the outside of the wall. Furthermore, the reinforcement structure 114 has a thickness t of at least 150 mm, preferably a thickness t of 250 mm.

During the precasting process of the precast column 111 of the first embodiment, a plurality of connecting steel bars 1116 may be pre-buried. As shown in FIG1 , the connecting steel bars 1116 extend outward from the outer side surface of the precast column 111 and are exposed outside the precast column 111, and are covered by concrete during the grouting process together with the first steel bar 1123, the second steel bar 1133, the third steel bar 1142 and the connecting steel bars 1116 to form the additional structure 114. After the grouting is completed, one end of the connecting steel bar 1116 is located in the additional structure 114 and forms a hook, and the other end of the connecting steel bar 1116 is located in the precast column 111 and forms a hook.

The connecting steel bars 1116 can serve as a connecting bridge between the reinforced structure 114 and the precast column 111 to enhance the connection strength between the reinforced structure 114 and the precast column 111.

Please refer to FIG. 1 and FIG. 3, wherein FIG. 3 shows a schematic diagram of the upper perspective structure of the second embodiment of the building structure unit 12 of the basement exterior wall structure 1 of FIG. 1 of the present disclosure. The building structure unit 12 has a precast column 121 that supports the upper and lower floors and beams (not shown) of the basement. The precast column 121 is pre-embedded with a plurality of steel bar connectors 1215 along its height during the precasting process. Each of the plurality of steel bar connectors 1215 includes a connecting joint 1217 and an anchoring steel bar 1214 extending from the connecting joint 1217 to the inside of the precast column 121. The connecting joint 1217 is exposed at the first side surface 1211 of the pre-cast column 121 and the second side surface 1212 adjacent to the first side surface 1211.

In the second embodiment, during construction, main bars and stirrups for constructing the first wall 122 and the second wall 123 which are substantially perpendicular to each other are respectively arranged on the adjacent first side surface 1211 and the second side surface 1212 of the precast column 121, and a plurality of transverse steel bars 1222 and 1232 extending horizontally out of one end of the wall are additionally arranged along the height of the wall. The number of the plurality of transverse steel bars 1222 and 1232 of the wall is the same as the number of the steel bar connectors 1215 on the corresponding side surface of the precast column 121. One end of the first wall 122 is connected to the first side surface 1211 of the pre-cast column 121 ; one end of the second wall 123 is connected to the second side surface 1212 of the pre-cast column 121 .

In the second embodiment, the continuous joints of the steel bar connector 1215 are used to respectively connect the plurality of transverse steel bars 1222 and 1232 extending from the end of the first wall 122 and the end of the second wall 123 to connect the The anchoring steel bars 1214 of the steel bar connector 1215 in the column 121 are connected to the corresponding transverse steel bars 1222 and 1232 of the wall, so that the shear force on the wall can be effectively transmitted to the prefabricated concrete through the transverse steel bars 1222 and 1232 and the anchoring steel bars 1214. Cast columns 121 are used to increase the shear strength of the building structural unit 12.

In the second embodiment, a first interface 125 is defined between the end of the first wall 122 and the first side 1211 of the Xiuxuan column 121; between the end of the second wall 123 and the second side 1212 of the Xiuxuan column 121 Define a second interface 126. The first wall 122 and the second wall 123 have a thickness d of 600 mm.

The first wall 122 and the second wall 123 of the second embodiment are used as a part of the basement outer wall structure 1, wherein the first wall 122 and the second wall 123 are further provided with a first steel bar 1223 and a second steel bar 1233 substantially perpendicular to the wall surface. The first steel bar 1223 and the second steel bar 1233 extend outward from the corresponding wall and are exposed on the outer side of the wall, and a hook is formed at the end of the outer side of the wall. During construction, main bars and stirrups for constructing the additional structure 124 are provided on the outer side of the precast column 121, the first wall 122 and the second wall 123, and at least one third steel bar 1242 substantially parallel to the corresponding wall and extending horizontally is provided on the outer side of the first wall 122 and the second wall 123. The third steel bar 1242 on the outside of the first wall 122 is substantially perpendicular to the first steel bar 1223; the third steel bar 1242 on the outside of the second wall 123 is substantially perpendicular to the second steel bar 1233. In addition, the third steel bar 1242 on the outside of the first wall 122 and the third steel bar 1242 on the outside of the second wall 123 extend along one side surface 1241 of the added structure 124 in the added structure 124 and form a bend at one end and are connected to each other. Each of the third steel bars 1242 of the first wall 122 and the second wall 123 also forms a bend at the other end and is connected to the bends at the ends of the first steel bar 1223 and the second steel bar 1233 exposed to the outside of the wall.

During construction, main reinforcement and stirrups are arranged around the first reinforcement 1223, the second reinforcement 1233 and the third reinforcement 1242, and formwork is arranged and grouting is poured around the space defined by the outer surface of the precast column 121, the first wall 122, the second wall 123, the first reinforcement 1223, the second reinforcement 1233 and the third reinforcement 1242 to form an enhanced structure 124. The additional structure 124 extends and connects along a side 1221 of the first wall 122, at least a first portion 1213 of the precast column 121, and a side 1231 of the second wall 123 to cover a side of the first interface 125 and a side of the second interface 126, so that the gaps in the first interface 125 and the second interface 126 are isolated from the outer side of the wall. At least the first portion 1213 of the precast column 121 includes two adjacent sides of the precast column 121, which are different from the first side 1211 of the precast column 121 or the second side 1212 of the precast column 121. In addition, the additional structure 124 has a thickness t of at least 150 mm, preferably a thickness t of 250 mm.

In the precasting process of the precast column 121 of the second embodiment, a plurality of connecting steel bars 1216 may be additionally provided. As shown in FIG3 , the connecting steel bars 1216 extend outward from the outer side surfaces of the precast column 121 that are different from the first side surface 1211 and the second side surface 1212 and are exposed to the outside of the precast column 121, and together with the first steel bar 1223, the second steel bar 1233, the third steel bar 1242 and the connecting steel bars 1216, are covered by concrete during the grouting process to form the additional structure 124. After the grouting is completed, one end of the connecting steel bar 1216 is located in the additional structure 124 and forms a hook, and the other end of the connecting steel bar 1216 is located in the precast column 121 and forms a hook. The connecting steel bars 1216 can serve as a connecting bridge between the reinforced structure 124 and the precast column 121 to enhance the connection strength between the reinforced structure 124 and the precast column 121.

Please refer to FIG. 1 and FIG. 4, wherein FIG. 4 shows a schematic diagram of the upper perspective structure of the third embodiment of the building structure unit 13 of the basement exterior wall structure 1 of FIG. 1 of the present disclosure. The building structure unit 13 has a precast column 131 that supports the upper and lower floors and beams (not shown) of the basement. The precast column 131 is pre-embedded with a plurality of steel bar connectors 1315 along its height during the precasting process. Each of the plurality of steel bar connectors 1315 includes a connecting joint 1317 and an anchoring steel bar 1314 extending from the connecting joint 1317 to the inside of the precast column 131. The connecting joint 1317 is exposed at the first side surface 1311 of the pre-cast column 131 and the second side surface 1312 adjacent to the first side surface 1311.

In the third embodiment, during construction, main bars and hoops for constructing the first wall 132 and the second wall 133 that are substantially perpendicular to each other are respectively provided on the adjacent first side 1311 and the second side 1312 of the Xiuxuan column 131 . bars, and a plurality of additional transverse steel bars 1322, 1332 extending out of one end of the wall in the horizontal direction are provided along the height of the wall. The number of transverse steel bars 1322 and 1332 of the wall is the same as the number of steel bar connectors 1315 on the corresponding sides of the columns 131. One end of the first wall 132 is connected to the first side 1311 of the pillar 131; one end of the second wall 133 is connected to the second side 1312 of the pillar 131. As shown in FIG. 4 , the first wall 132 and the second wall 133 are respectively disposed adjacent to the corner edges where the first side 1311 and the second side 1312 of the pillar 131 intersect, so that the pillar 131 , the first wall 132 and The second wall 133 is generally L-shaped. The first wall 132 and the second wall 133 can also be respectively provided at other positions on the first side 1311 and the adjacent second side 1312 of the pillar 131 .

In the third embodiment, the continuous joints 1317 of the steel bar connector 1315 are used to respectively connect a plurality of transverse steel bars 1322 and 1332 extending from the end of the first wall 132 and the end of the second wall 133 to connect the pre-installed steel bars 1322 and 1332 respectively. The anchoring steel bars 1314 of the steel bar connector 1315 in the cast column 131 are connected to the corresponding transverse steel bars 1322 and 1332 of the wall, so that the shear force on the wall can be effectively transmitted to the The pillars 131 are used to increase the shear strength of the building structural unit 13.

In the third embodiment, a first interface 135 is defined between one end of the first wall 132 and the first side 1311 of the Xiuxuan column 131; between one end of the second wall 133 and the second side 1312 of the Xiuxuan column 131 Define a second interface 136. The first wall 132 and the second wall 133 have a thickness d of 600 mm.

The wall of the third embodiment is used as a part of the basement exterior wall structure 1, and the first wall 132 and the second wall 133 are further provided with a first steel bar 1323 and a second steel bar 1333 that are substantially perpendicular to the wall surface respectively. The first steel bar 1323 and the second steel bar 1333 extend outward from the corresponding wall surface and are partially exposed outside the wall. Each of the first steel bar 1323 and the second steel bar 1333 forms a hook at the end located inside the wall, and forms a curved hook at the end outside the wall and is connected.

During construction, main reinforcement and stirrups are installed around the first reinforcement 1323 and the second reinforcement 1333 of the first wall 132 and the second wall 133, and formwork is installed and grouting is performed around the space defined by the first wall 132, the second wall 133, the first reinforcement 1323 and the second reinforcement to form an enhanced structure 134. The additional structure 134 extends and connects along a side 1321 of the first wall 132, a first portion 1313 defined by a corner formed by the first side 1311 and the second side 1312 of the precast column 131, and a side 1331 of the second wall 133 to cover a side of the first interface 135 and a side of the second interface 136, so that the gaps in the first interface 135 and the second interface 136 are isolated from the outside of the wall. In addition, the additional structure 134 has a thickness t of at least 150 mm, preferably a thickness t of 250 mm.

Please refer to Figure 1, which is a top perspective structural diagram showing the basement exterior wall structure 1 composed of the above-mentioned structural units 11, 12, and 13. The basement exterior wall structure 1 of the present invention is composed of a plurality of building structural units 11 of the first embodiment, a plurality of building structural units 12 of the second embodiment, and one building structural unit 13 of the third embodiment. The number and direction of the building structural units 11, 12, and 13 can be adjusted according to the actual building structure needs to construct the required shape of the basement exterior wall structure 1.

First, the basement exterior wall structure 1 forming a closed range as shown in Figure 1 is composed of a plurality of transverse straight portions 14, a plurality of longitudinal straight portions 16, a plurality of outer turning portions 15 and an inner turning portion 17 . During construction, a plurality of the building structural units 11 of the first embodiment are placed in a straight position underground after excavation of the construction site, and the first wall 112 of the building structural unit 11 of the first embodiment is connected with another first wall. The second wall 113 of the building structural unit 11 of the embodiment is connected, and the above steps are repeated to form the transverse straight portion 14 or the longitudinal straight portion 16 on one side of the basement exterior wall structure 1 . During the above construction process, the pillars 111 of two adjacent building structural units 11 of the first embodiment can also share the same wall.

A plurality of outer turning portions 15 of the basement exterior wall structure 1 are provided with the building structural units 12 of the second embodiment. During construction, the second wall 113 of the building structural unit 11 of the first embodiment is connected to the first wall 122 of the building structural unit 12 of the second embodiment, and the first wall 113 of the building structural unit 11 of the first embodiment is connected. The wall 112 is connected to the second wall 123 of the building structural unit 12 of the second embodiment. During the above construction process, the adjacent pillars 111 of the building structural unit 11 of the first embodiment and the adjacent pillars 121 of the building structural unit 12 of the second embodiment can also share the same wall.

A plurality of inner turning portions 17 of the basement exterior wall structure 1 are provided with the building structural units 13 of the third embodiment. During construction, the first wall 132 of the building structural unit 13 of the third embodiment is connected to the second wall 113 of the building structural unit 11 of the first embodiment, and the second wall 132 of the building structural unit 13 of the third embodiment is connected. The wall 133 is connected to the first wall 112 of the building structural unit 11 of the first embodiment. During the above construction process, the adjacent pillars 111 of the building structural unit 11 of the first embodiment and the adjacent pillars 131 of the building structural unit 13 of the third embodiment can also share the same wall.

The present invention has been described with reference to the embodiments and for the understanding of the specific applications of the features of the present invention may be practiced individually and/or in various combinations and/or on various types. Moreover, those skilled in the art will recognize that various modifications may be made to the embodiments in any of their applications without departing from the scope of the present invention. In addition, alternative embodiments may be made with different constituent materials, structures and/or spatial relationships and nonetheless still fall within the scope of the present invention. In view of the foregoing, the present invention shall be limited only to the scope of the permissible patent claims issued by this application or any related application.

The term "a" or "an" used herein is used to describe the elements and components of the invention. This terminology is only for convenience of description and to give the basic concept of this creation. This recitation should be understood to include one or at least one, and the singular also includes the plural unless it is expressly stated otherwise. When used with the word "comprising" in a patent application, the term "a" can mean one or more than one. In addition, the word "or" used in this article has the same meaning as "and/or".

Unless otherwise specified, terms such as "above", "below", "up", "left", "right", "down", "top", "bottom", "vertical", "horizontal", "side" Spatial descriptions such as "higher", "lower", "upper", "above", and "below" indicate the direction shown in the figure. It should be understood that the spatial descriptions used herein are for illustrative purposes only, and actual implementations of the structures described herein may be spatially configured in any relative orientation, and this limitation does not alter the advantages of various embodiments of the present invention. For example, in the description of some embodiments, providing that one element is "on" another element may cover situations where the former element is directly on (e.g., in physical contact with) the latter element, as well as when an element is "on" the latter element. Or a situation where multiple intervening components are located between the previous component and the following component.

As used herein, 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.

1: Basement exterior wall structure 11:Building structural unit 111:Xuanzhu 1111:First side 1112:Second side 1113:Part One 1114:Anchor steel bars 1115:Reinforcement bar connector 1116:Connecting steel bars 1117: continued connector 112:First wall 1121:Side 1122:Transverse steel bars 1123:The first steel bar 113:Second wall 1131:Side 1132:Transverse steel bars 1133:Second steel bar 114: Add structure 1141:Side 1142:Third steel bar 115:First interface 116: Second interface 12:Building structural unit 121:Xuanzhu 1211:First side 1212:Second side 1213:Part One 1214:Anchor steel bars 1215:Reinforcement bar connector 1216:Connecting steel bars 1217: continued connector 122:First wall 1221:Side 1222:Transverse steel bars 1223:The first steel bar 123:Second wall 1231:Side 1232:Transverse steel bars 1233:Second steel bar 124: Add structure 1241:Side 1242:Third steel bar 125:First interface 126: Second interface 13:Building structural unit 131:Xuanzhu 1311:First side 1312:Second side 1313:Part One 1314:Anchor steel bars 1315:Reinforcement bar connector 1317: continued connector 132:First wall 1321:Side 1322:Transverse steel bars 1323:The first steel bar 133:Second wall 1331:Side 1332:Transverse reinforcement 1333:Second steel bar 134: Add structure 135:First interface 136: Second interface 14: Lateral straight part 15:Outer turning part 16:Longitudinal straight part 17: Inner turning part 18: column

In order to have a clearer understanding of the effects achieved by the present invention and its advantages, the present invention is described in detail below with reference to the accompanying drawings and in the form of embodiments. Figure 1 is a top view of a basement exterior wall according to an embodiment of the present invention. Figure 2 is a partially enlarged perspective view of part A of the basement exterior wall in Figure 1. Figure 3 is a partially enlarged perspective view of part B of the basement exterior wall in Figure 1. Figure 4 is a partial enlarged perspective view of part C of the basement exterior wall in Figure 1.

1: Basement exterior wall structure

11: Building structure unit

12: Building structure unit

13:Building structural unit

14: Horizontal straight part

15:Outer turning part

16: Longitudinal straight part

17: Inner turning part

18: column

Claims (10)

A building structure unit includes: a precast column; a first wall, one end of which is connected to a first side of the precast column, and a first interface is defined between the end of the first wall and the first side of the precast column; a second wall, one end of which is connected to a second side of the precast column, and a second interface is defined between the end of the second wall and the second side of the precast column; and an additional structure, which extends and connects along a side of the first wall, at least a first portion of the precast column, and a side of the second wall, and covers one side of the first interface and one side of the second interface. For example, the building structural unit of request item 1, wherein: the first wall has a first steel bar extending from the interior thereof to the interior of the additional structure; and The second wall has a second steel bar extending from its interior to the interior of the reinforcement structure. A building structure unit as claimed in claim 2, wherein: The precast column is pre-embedded with a plurality of steel bar connectors along its height, each of the plurality of steel bar connectors comprises a connector and an anchor steel bar extending from the connector to the inside of the precast column, the connector is exposed at the first side and the second side of the precast column, and is used to connect with a plurality of transverse steel bars extending from the end of the first wall and the end of the second wall, respectively. A building structure unit as claimed in claim 3, wherein: The first wall is substantially parallel to the second wall, and corresponding joints located at the same height on the first side and the second side share a common anchoring steel bar. A building structure unit as claimed in claim 3, wherein: The first wall and the second wall are substantially perpendicular to each other, and the at least one first portion of the precast column includes two adjacent sides of the precast column, wherein the two adjacent sides are different from the first side of the precast column or the second side of the precast column. For example, the building structural unit of request item 3, wherein: The first wall and the second wall are substantially perpendicular to each other, and the at least a first part of the Xiuxuan pillar is the corner formed by the first side of the Xiuxuan pillar and the second side of the Xiuxuan pillar. For example, the building structural unit of claim item 4 or 5, wherein: The additional structure has at least a third steel bar, which extends along one side of the additional structure and is connected with at least one of the first steel bar of the first wall and the second steel bar of the second wall. One is connected. If the building structural unit of claim item 4 or 5 further includes a connecting steel bar, one end of the connecting steel bar is located in the additional structure, and the other end of the connecting steel bar is located in the column to strengthen the additional structure and The strength of the connection between the columns. A building structure unit as claimed in any one of claims 1 to 6, wherein the added structure has a thickness t of 250 mm, and the first wall and the second wall have a thickness d of 600 mm. A basement exterior wall structure, comprising: A plurality of building structure units as in claim 5 or 6, located at the turning position of the basement exterior wall structure; and A plurality of building structure units as in claim 4, located at the straight position of the basement exterior wall structure; Wherein both sides of each of the plurality of building structure units as in claim 4 are connected to another building structure unit as in claim 4, or the plurality of building structure units as in claim 5 or 6, so that the plurality of building structure units as in claim 5 or 6 and the plurality of building structure units as in claim 4 form a closed range.