Steel plate concrete joint structure and construction method for steel plate concrete joint structure

Abstract

To make it possible to join a steel plate concrete wall and a steel plate concrete slab in a state where shear forces of an off-plate direction and an in-plane direction of the steel plate concrete slab can be transmitted to the steel plate concrete wall while improving workability by rationalization of a junction structure between the steel plate concrete wall and the steel plate concrete slab.SOLUTION: The steel plate concrete junction structure joins a steel plate concrete slab S to a steel plate concrete wall W through a transmission member 1 transmitting shear forces of an off-plate direction and an in-plane direction of the steel plate concrete slab S to the steel plate concrete wall W. The transmission member 1 comprises one steel material provided at a bonding portion with the steel plate concrete slab S on the steel plate concrete wall W in a state where a steel plate support member supporting a steel plate 6 of the steel plate concrete slab S and an anchorage member anchored within the steel plate concrete slab S are combined.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a joining structure of a steel plate concrete structure that joins a steel plate concrete slab to a steel plate concrete wall via a transmission member that transmits the out-of-plane and in-plane shear forces of the steel plate concrete slab to the steel plate concrete wall.

Background Art

[0002] As the background art of the present invention, for example, in a wall of a steel plate concrete structure (steel plate concrete wall), upper and lower vertical diaphragm steel plates whose one end extends from the inner wall steel plate of the wall to the steel plate concrete floor (steel plate concrete slab) side and is joined to the upper floor steel plate or the lower floor steel plate of the floor, and a plurality of studs that extend from the inner wall steel plate of the wall to the floor side and are fixed in the floor concrete portion of the floor are provided, and a joining structure of a steel plate concrete structure that joins the wall and the floor in a state where the out-of-plane and in-plane shear forces of the floor can be transmitted to the wall (see, for example, Patent Document 1).

[0003] Further, in a SC wall (steel plate concrete wall), a steel plate for supporting a concrete slab fixed to the surface steel plate thereof, and an L-shaped fixing reinforcing bar whose one end protrudes from the surface steel plate to the concrete slab (steel plate concrete slab) side and is embedded in the concrete of the concrete slab are provided, and a construction method of an SC structure that joins the SC wall and the concrete slab in a state where the out-of-plane and in-plane shear forces of the concrete slab can be transmitted to the SC wall (see, for example, Patent Document 2).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the steel plate concrete joint structure described in Patent Document 1, the upper and lower vertical diaphragm steel plates extending from the steel plate concrete wall toward the steel plate concrete slab function as steel plate support members that support the upper or lower floor steel plate of the steel plate concrete slab, and the multiple studs extending from the steel plate concrete wall toward the steel plate concrete slab become anchoring members that are fixed within the steel plate concrete slab.

[0006] Furthermore, in the construction method of the SC structure described in Patent Document 2, the steel plate for supporting the concrete slab, which is fixed to the steel plate concrete wall, becomes a steel plate support member that supports the steel plate for the concrete slab of the steel plate concrete slab, and the L-shaped anchoring reinforcement that protrudes from the steel plate concrete wall towards the steel plate concrete slab becomes an anchoring member that is anchored within the steel plate concrete slab.

[0007] In other words, in both the steel plate concrete joint structure described in Patent Document 1 and the construction method for the SC structure described in Patent Document 2, in order to join the steel plate concrete wall and the steel plate concrete slab in a manner that allows for the transmission of the aforementioned shear force, it is necessary to provide both a steel plate support member and an anchoring member in the steel plate concrete wall. As a result, the number of parts required to join the steel plate concrete wall and the steel plate concrete slab increases, making the joining process time-consuming.

[0008] In view of these circumstances, the main objective of the present invention is to improve constructability by rationalizing the joint structure between the steel plate concrete wall and the steel plate concrete slab, while enabling the joint between the steel plate concrete wall and the steel plate concrete slab in a manner that allows the out-of-plane and in-plane shear forces of the steel plate concrete slab to be transmitted to the steel plate concrete wall. [Means for solving the problem]

[0009] The first characteristic configuration of the present invention is a steel plate concrete joining structure in which a steel plate concrete slab is joined to a steel plate concrete wall via a transmission member that transmits the out-of-plane and in-plane shear forces of the steel plate concrete slab to the steel plate concrete wall, The transmission member is a single steel material provided at the joint between the steel plate concrete wall and the steel plate concrete slab, serving as both a steel plate support member that supports the steel plates of the steel plate concrete slab and an anchoring member that is fixed within the steel plate concrete slab. 、 The joint portion of the steel plate concrete wall and the transmission member are provided with a joint that enables bolted connection between the steel plate concrete wall and the transmission member. It's at a single point.

[0010] According to this configuration, when joining a steel plate concrete wall and a steel plate concrete slab at a construction site, by simply providing a single steel material transmission member at the joint between the steel plate concrete wall and the steel plate concrete slab, the transmission member can be used as a steel plate support member to support the steel plates when laying the steel plates of the steel plate concrete slab. Subsequently, when slab concrete is poured onto the steel plates of the steel plate concrete slab, at least a portion of the transmission member is embedded and fixed within the steel plate concrete slab, so that the transmission member functions as a fixing member.

[0011] In other words, by having the transmission member serve as both the steel plate support member and the anchoring member, the joint structure between the steel plate concrete wall and the steel plate concrete slab can be streamlined, thereby reducing the man-hours required for joining the steel plate concrete wall and the steel plate concrete slab.

[0012] As a result, while improving workability, the steel plate concrete wall and the steel plate concrete slab can be suitably joined in a manner that allows the out-of-plane and in-plane shear forces of the steel plate concrete slab to be transmitted to the steel plate concrete wall. Furthermore, with this configuration, at the construction site, a transmission member that serves as both a steel plate support member and an anchoring member can be provided on the steel plate concrete wall by bolting the joint provided on the transmission member to the joint provided on the joint of the steel plate concrete wall. In other words, when attaching the transmission members to the steel plate concrete wall at the construction site, it becomes unnecessary to weld the transmission members to the steel plate concrete wall, eliminating the need to transport welding machines and manage welding equipment, thus more effectively improving workability.

[0013] The second characteristic configuration of the present invention is that the steel material is a C-shaped steel joined to the joint portion of the steel plate concrete wall such that a pair of flanges are vertically positioned so as to extend from the steel plate concrete wall toward the steel plate concrete slab side.

[0014] According to this configuration, by joining a general C-shaped steel to the joint portion of the steel plate concrete wall as described above, for example, after supporting the steel plate of the steel plate concrete slab on the lower flange, if slab concrete is placed on the steel plate, the upper flange can be embedded and fixed in the steel plate concrete slab.

[0015] As a result, for example, compared with the case where a transmission member formed by pressing a single steel plate to serve as both a steel plate support member and a fixing member is provided on the steel plate concrete wall, the transmission member can be provided on the steel plate concrete wall more simply and at a lower cost.

[0016] The third characteristic configuration of the present invention is A steel plate concrete joining structure, wherein the steel plate concrete slab is joined to the steel plate concrete wall via a transmission member that transmits the out-of-plane and in-plane shear forces of the steel plate concrete slab to the steel plate concrete wall, The transmission member is composed of a single steel material provided at the joint between the steel plate concrete wall and the steel plate concrete slab, serving as both a steel plate support member that supports the steel plates of the steel plate concrete slab laid in the slab construction area formed by the steel plate concrete wall from below, and an anchoring member that is fixed within the steel plate concrete slab.

[0017] The fourth feature configuration of the present invention is a construction method for a steel plate concrete joint structure as described in the third feature configuration, First, the transmission member is joined to the joint portion between the steel plate concrete wall and the steel plate concrete slab. Next, the steel plate is laid in the slab construction area so that it is supported by the transmission member from below, A construction method for a steel plate concrete joint structure, wherein slab concrete is poured onto the laid steel plate thereafter, and the transmission member is embedded and fixed within the slab concrete.

Brief Description of the Drawings

[0019] [Figure 1] Vertical sectional view of the main part showing the state where the steel plate concrete wall and the steel plate concrete slab are joined [Figure 2] (a) is an exploded vertical sectional view of the main part showing the state before joining the transmission member to the steel plate concrete wall, and (b) is a vertical sectional view of the main part showing the state where the transmission member is joined to the steel plate concrete wall. [Figure 3] Vertical sectional view of the main part showing the joint structure between the steel plate concrete wall and the steel plate concrete slab [Modes for carrying out the invention]

[0020] Hereinafter, an example of an embodiment for carrying out the present invention will be described with reference to the drawings. As shown in Figure 1, in the steel plate concrete joint structure illustrated in this embodiment, the steel plate concrete wall W and the steel plate concrete slab S are joined via a transmission member 1 that transmits the out-of-plane and in-plane shear forces of the steel plate concrete slab S to the steel plate concrete wall W.

[0021] As shown in Figures 1-3, the steel plate concrete wall W is constructed by pouring wall concrete 3 between a pair of steel plates 2 that form the wall surface. The pair of steel plates 2 are connected by numerous tie bars 4, etc., which have a certain length and extend across the pair of steel plates 2, thereby ensuring a wall concrete pouring area Aw at a certain interval between the pair of steel plates 2. Numerous studs 5 are welded horizontally to the inner surface of each steel plate 2 to structurally integrate the steel plate 2 and the wall concrete 3.

[0022] As shown in Figures 1 and 3, the steel plate concrete slab S is constructed by laying a steel plate 6, which forms the bottom surface of the steel plate concrete slab S, in a slab construction area As enclosed by a steel plate concrete wall W, then arranging numerous slab reinforcements 7 in a grid pattern, and finally pouring slab concrete 8. Numerous studs 9 are welded in an upright position to the upper surface of the steel plate 6 to structurally integrate the steel plate 6 and the slab concrete 8. Each slab reinforcement 7 is bent into an L-shape so that its ends function as anchoring portions 7A that are fixed within the steel plate concrete wall W.

[0023] Furthermore, instead of the steel plate 6, a half-steel plate concrete slab forming the bottom of the steel plate concrete slab S may be laid as the steel plate concrete slab S. Each slab reinforcement 7 may be enlarged in diameter so that its ends function as anchorage portions 7A, or its ends may be bent into an L-shape so that they extend downward along the wall surface of the steel plate concrete wall W within the steel plate concrete slab S.

[0024] As shown in Figures 1-3, the transmission member 1 is a single steel material provided at the joint between the steel plate concrete wall W and the steel plate concrete slab S, serving as both a steel plate support member that supports the steel plates 6 of the steel plate concrete slab S and an anchoring member that is fixed within the steel plate concrete slab S. The single steel material constituting the transmission member 1 is a C-shaped steel that is joined to the aforementioned joint of the steel plate concrete wall W so that a pair of flanges 1A and 1B are positioned vertically, extending from the steel plate concrete wall W towards the steel plate concrete slab S.

[0025] The steel plate 2, which forms the aforementioned joint portion of the steel plate concrete wall W, is provided with a through-hole 2A through which the slab reinforcement 7 passes. In addition, the steel plate 21 and the web 1C of the transmission member 1 (C-shaped steel) are provided with through-holes 2B and 1D (see Figure 2(a)) which serve as joints that enable joining the steel plate concrete wall W and the transmission member 1 using high-strength bolts 10 or the like.

[0026] In this embodiment, the construction procedure for joining a steel plate concrete slab S to a steel plate concrete wall W based on the steel plate concrete joint structure is as follows: First, as shown in Figure 2, the web 1C of the transmission member 1 made of C-shaped steel is joined to a predetermined portion of the steel plate 2, which is the joint portion between the steel plate concrete wall W forming the slab construction area As and the steel plate concrete slab S, using high-strength bolts 10 or the like, so that the flanges 1A and 1B extend vertically from the steel plate concrete wall W towards the steel plate concrete slab S.

[0027] Next, as shown in Figure 3, the steel plates 6 of the steel plate concrete slab S are supported by the lower flange 1B of the transmission member 1 and laid in the slab construction area As. Then, numerous slab reinforcements 7 are arranged in a grid pattern in the slab construction area As, passing through the through holes 2A of the steel plates 2 so that their ends are located inside the steel plate concrete wall W.

[0028] Subsequently, as shown in Figure 1, wall concrete 3 is poured into the wall concrete pouring area Aw between a pair of steel plates 2 in the steel plate concrete wall W to construct the steel plate concrete wall W. Then, slab concrete 8 is poured onto the steel plates 6 of the steel plate concrete slab S in the slab construction area As to construct the steel plate concrete slab S.

[0029] As described above, according to the steel plate concrete joint structure illustrated in this embodiment, when joining a steel plate concrete wall W and a steel plate concrete slab S at the construction site, a single C-shaped steel transmission member 1 is bolted to the joint portion between the steel plate concrete wall W and the steel plate concrete slab S. When laying the steel plates 6 of the steel plate concrete slab S, the transmission member 1 can be used as a steel plate support member that supports the steel plates 6 with its lower flange 1B. Subsequently, when slab concrete 8 is poured onto the steel plates 6 of the steel plate concrete slab S, the transmission member 1 functions as an anchoring member by having its upper flange 1A and other parts embedded and fixed within the steel plate concrete slab S.

[0030] In other words, by having the transmission member 1 serve as both a steel plate support member and an anchoring member, the joint structure between the steel plate concrete wall W and the steel plate concrete slab S can be streamlined, thereby reducing the man-hours required for joining the steel plate concrete wall W and the steel plate concrete slab S.

[0031] As a result, while improving workability, the steel plate concrete wall W and the steel plate concrete slab S can be suitably joined in a manner that allows the out-of-plane and in-plane shear forces of the steel plate concrete slab S to be transmitted to the steel plate concrete wall W.

[0032] Furthermore, when joining the steel plate concrete wall W and the steel plate concrete slab S at the construction site, it becomes unnecessary to weld the transmission member 1 to the steel plate 2 of the steel plate concrete wall W, eliminating the need to transport welding machines and manage firearms, thus more effectively improving workability.

[0033] In particular, it eliminates the need to arrange for welders and specialized equipment for stud welding, which was previously required when studs were provided as dedicated fixing members.

[0034] Furthermore, by improving constructability, it becomes unnecessary to pre-attach the transmission members 1 to the steel plates 2 of the steel plate concrete wall W in the manufacturing plant or the construction site's work yard. This avoids the reduction in transportability caused by the transmission members 1 attached to the steel plate concrete wall W getting in the way during transportation.

[0035] Furthermore, in the steel plate concrete joint structure illustrated in this embodiment, when joining the steel plate concrete wall W and the steel plate concrete slab S, the upper flange 1A of the transmission member 1 is fixed within the steel plate concrete slab S, and in addition, the ends of each slab reinforcement 7 are fixed within the steel plate concrete wall W as fixing portions 7A. This allows for a more secure and suitable joining of the steel plate concrete wall W and the steel plate concrete slab S.

[0036] [Another embodiment] Another embodiment of the present invention will be described. Furthermore, the configurations of each of the separate embodiments described below are not limited to being applied individually, but can also be applied in combination with the above-described embodiments or other separate embodiments.

[0037] (1) In the above embodiment, the transmission member 1 is exemplified as being made of a C-shaped steel, but it is not limited to this, and may be made of a single steel plate formed by press working or the like to serve as both a steel plate support member and a fixing member.

[0038] (2) In the above embodiment, the transmission member 1 is shown as being bolted to the steel plate concrete wall W, but it is not limited to this, and may be, for example, welded to the steel plate concrete wall W.

[0039] (3) In the above embodiment, the joint portion 2B provided at the joint portion of the steel plate concrete wall W was exemplified as a through hole formed in the steel plate 2 of the steel plate concrete wall W. However, it is not limited to this, and may consist of a through hole in the steel plate 2 and a nut welded to the steel plate 2, or it may consist of a screw hole formed in the steel plate 2.

[0040] (4) In the above embodiment, the joint portion 1D provided in the transmission member 1 was exemplified as a through hole formed in the web 1C of the C-shaped steel, but it is not limited to this, and may be a bolt or reinforcing bar that protrudes from the transmission member 1 toward the steel plate concrete wall W and is passed through a through hole formed as a joint portion 2B in the steel plate 2 of the steel plate concrete wall W.

[0041] (5) In the above embodiment, as a joint structure for steel plate concrete, only the transmission member 1 provided on the steel plate concrete wall W is fixed within the steel plate concrete slab S. However, the invention is not limited to this, and for example, in addition to the transmission member 1, studs or reinforcing bars may be provided on the steel plate concrete wall W and fixed within the steel plate concrete slab S, thereby enabling a more secure and suitable joint between the steel plate concrete wall W and the steel plate concrete slab S. [Explanation of Symbols]

[0042] 1. Transmission member 1A Flange 1B flange 1D joint 2B joint 6 steel plate S Steel plate concrete slab W Steel plate concrete wall

Claims

1. A steel plate concrete joining structure, wherein the steel plate concrete slab is joined to the steel plate concrete wall via a transmission member that transmits the out-of-plane and in-plane shear forces of the steel plate concrete slab to the steel plate concrete wall, The transmission member is composed of a single steel material provided at the joint between the steel plate concrete wall and the steel plate concrete slab, serving as both a steel plate support member for supporting the steel plates of the steel plate concrete slab and an anchoring member fixed within the steel plate concrete slab. A steel plate concrete joint structure is provided in which the joint portion of the steel plate concrete wall and the transmission member are provided with a joint portion that enables bolted connection between the steel plate concrete wall and the transmission member.

2. The steel plate concrete joint structure according to claim 1, wherein the steel material is a C-shaped steel that is joined to the joint portion of the steel plate concrete wall such that a pair of flanges are positioned vertically with the flanges extending from the steel plate concrete wall toward the steel plate concrete slab.

3. A steel plate concrete joining structure, wherein the steel plate concrete slab is joined to the steel plate concrete wall via a transmission member that transmits the out-of-plane and in-plane shear forces of the steel plate concrete slab to the steel plate concrete wall, The aforementioned transmission member is a steel plate concrete joint structure made of a single steel material provided at the joint between the steel plate concrete wall and the steel plate concrete slab, serving as both a steel plate support member that supports the steel plates of the steel plate concrete slab laid in the slab construction area formed by the steel plate concrete wall from below, and an anchoring member that is fixed within the steel plate concrete slab.

4. A method for constructing a steel plate concrete joint structure according to Claim 3, First, the transmission member is joined to the joint portion between the steel plate concrete wall and the steel plate concrete slab. Next, the steel plate is laid in the slab construction area so that it is supported by the transmission member from below, A construction method for a steel plate concrete joint structure, wherein slab concrete is poured onto the laid steel plate thereafter, and the transmission member is embedded and fixed within the slab concrete.

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