Connecting structure for bare concrete wall and steel pipe frame

Abstract

The utility model discloses a connecting structure for a fair-faced concrete wall and a steel pipe frame. The connecting structure comprises the fair-faced concrete wall. At least one end of the water stop screw assembly is provided with a first threaded shaft extending out of the bare concrete wall; the base plate is provided with a through hole allowing the first threaded shaft to penetrate through and is provided with a connecting pipe extending horizontally; the fastening nut is in threaded connection with the first threaded shaft and is matched with the bare concrete wall to clamp the base plate; and the series connection piece is movably connected with the first clamping piece and the second clamping piece. The first threaded shaft extending out of the water stop screw assembly is matched with the fastening nut, installation and fixation of the base plate and the bare concrete wall are achieved, the bare concrete wall does not need to be additionally punched, subsequent bolt dismounting and hole filling are avoided, the surface quality of the bare concrete wall is improved, construction is reduced, and construction convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a connection structure for a plain concrete wall and a steel pipe frame. Background Art

[0002] When erecting a steel pipe scaffold, in order to prevent the scaffold structure from tilting sideways and becoming unstable and to increase the overall stability and load-bearing capacity of the scaffold, it is generally necessary to set connectors between the wall and the frame, thereby stabilizing the steel pipe scaffold. Setting connectors usually requires drilling holes in the exposed concrete wall structure to place bolts, which damages the surface of the exposed concrete wall, and the subsequent removal of the bolts and hole filling construction is also troublesome. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a connection structure for a plain concrete wall and a steel pipe frame, which can reduce damage to the surface of the plain concrete wall.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A connection structure for a fair-faced concrete wall and a steel pipe rack, comprising: a fair-faced concrete wall; a water-stop screw assembly pre-buried in the fair-faced concrete wall, at least one end of the water-stop screw assembly being provided with a first threaded shaft extending out of the fair-faced concrete wall; a base plate being provided with a through hole for the first threaded shaft to pass through, and being provided with a horizontally extending connecting pipe; a fastening nut being threadedly connected to the first threaded shaft and cooperating with the fair-faced concrete wall to clamp the base plate; a series member being movably connected with a first clamping member and a second clamping member, the series member and the first clamping member clamping and fixing the connecting pipe via a detachable first fastener; the series member and the second clamping member clamping and fixing the steel pipe via a detachable second fastener.

[0006] Furthermore, the series member includes a first clamping arc plate, one end of the first clamping arc plate is hinged to the first clamping member, and the other end is provided with a first connecting block. The first clamping member is provided with a second connecting block corresponding to the first connecting block, and the first connecting block and the second connecting block are connected by a first fastener.

[0007] Furthermore, the series member includes a second clamping arc plate, one end of the second clamping arc plate is fixedly connected to the first clamping arc plate, and the other end is hinged to the second clamping member, and a pressure plate is provided at the end of the second clamping member away from the hinge, and the second fastener is a clamping screw threadedly connected to the series member, and the clamping screw is used to clamp the pressure plate so that the second clamping member and the second clamping arc plate clamp and fix the steel pipe.

[0008] Furthermore, the first fastener is a first bolt and a first nut, the first connecting block and the second connecting block are provided with corresponding holes and penetrated with the first bolt, and the first bolt is threadedly connected with the first nut.

[0009] Furthermore, the series connection member comprises an L-shaped mounting plate, the L-shaped mounting plate is fixedly connected to the first clamping arc plate, the L-shaped mounting plate is provided with a threaded hole, and the clamping screw is threadedly connected to the threaded hole.

[0010] Furthermore, the connecting pipe is perpendicular to the surface of the fair-faced concrete wall, and the opening of the second clamping arc plate faces toward or away from the surface of the fair-faced concrete wall.

[0011] Furthermore, the L-shaped mounting plate includes an extension plate fixedly connected to the first clamping arc plate and a vertical plate connected to the extension plate and extending toward one side of the second clamping arc plate, the threaded hole is provided on the vertical plate, and the second clamping arc plate is fixedly connected to the first clamping arc plate through a connecting plate, and the connecting plate is parallel to the vertical plate.

[0012] Furthermore, a first reinforcing rib is provided between the extension plate and the vertical plate, a second reinforcing rib is provided between the connection plate and the second clamping arc plate, and the first reinforcing rib and the L-shaped mounting plate both avoid the moving path of the pressure plate.

[0013] Furthermore, the fastening nuts are provided with two and abut against each other.

[0014] Furthermore, the waterstop screw assembly includes: a central screw with second threaded shafts at both ends and a waterstop ring at the center; an adjusting rod with one end threadedly connected to the second threaded shaft, and the first threaded shaft is arranged at the other end of the adjusting rod; and a blocking sleeve, which is sleeved on the adjusting rod.

[0015] The utility model has the following beneficial effects:

[0016] The first threaded shaft extending from the waterstop screw assembly is used in conjunction with a fastening nut to achieve installation and fixation of the base plate and the fair-faced concrete wall. There is no need to drill additional holes in the fair-faced concrete wall, and subsequent removal of bolts and patching of holes is avoided, thereby improving the surface quality of the fair-faced concrete wall, reducing construction, and improving construction convenience. The series connection piece is used in conjunction with the first clamping piece and the second clamping piece to connect the connecting pipe and the steel pipe in series, which stabilizes the steel pipe, prevents the steel pipe from lateral tilting and instability, and increases the overall stability and bearing capacity of the steel pipe and the scaffolding composed of the steel pipes; the series connection piece is movably connected to the first clamping piece and the second clamping piece, and the first fastener and the second fastener are detachable, which is convenient for installation and disassembly, and convenient for repeated turnover.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a structural schematic diagram of the use state of the embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the embodiment of the utility model without the exposed concrete wall;

[0021] Figure 3 yes Figure 2 Schematic diagram of the decomposed state of the partial structure;

[0022] Figure 4 yes Figure 2 A partial cross-sectional view of

[0023] Figure 5 is a schematic diagram of the connection structure of the series member, the first clamping member and the second clamping member;

[0024] Figure 6 It is a schematic diagram of a state structure of a series connection member, a first clamping member and a second clamping member;

[0025] Figure 7 It is a schematic diagram of the exploded structure of the plugging sleeve and the adjusting rod;

[0026] Figure 8 It is a schematic diagram of the exploded structure of the hook assembly of the embodiment of the utility model;

[0027] Fig. 9 It is a structural schematic diagram of a hook in another embodiment of the utility model.

[0028] Legend:

[0029] Fair-faced concrete wall 100, steel pipe 101, transverse embedded steel bars 102, vertical steel bars 103;

[0030] The water stop screw assembly 200, the first threaded shaft 210, the limit nut 211, the central screw 220, the second threaded shaft 221, the water stop ring 222, the adjustment rod 230, the limit retaining ring 231, the threaded connection hole 232, and the plugging sleeve 240;

[0031] Base plate 300, through hole 310, connecting pipe 320;

[0032] Fastening nut 400;

[0033] Series member 500, first clamping arc plate 510, first connection block 511, second clamping arc plate 520, connection plate 521, second reinforcing rib 522, clamping screw 530, L-shaped mounting plate 540, threaded hole 541, extension plate 542, vertical plate 543, first reinforcing rib 544;

[0034] A first clamping member 600, a second connecting block 610, and a first bolt 620;

[0035] A second clamping member 700 and a pressing plate 710;

[0036] Hook assembly 800 , hook ring 810 , vertical rod 811 , hook 820 , sliding cylinder 821 , set screw 822 , and fixing screw 823 . DETAILED DESCRIPTION

[0037] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] Please refer to Figure 1 and Figure 2A preferred embodiment of the utility model provides a connection structure for a fair-faced concrete wall and a steel pipe rack, including a fair-faced concrete wall 100, a water-stop screw assembly 200, a base plate 300, a fastening nut 400 and a series connection member 500.

[0042] The water-stop screw assembly 200 is pre-buried in the exposed concrete wall 100, and at least one end of the water-stop screw assembly 200 is provided with a first threaded shaft 210 extending out of the exposed concrete wall 100. Figure 1 As shown, the left end of the water stop screw assembly 200 is provided with a first threaded shaft 210 extending out of the plain concrete wall 100. The base plate 300 is provided with a through hole 310 for the first threaded shaft 210 to pass through, and the base plate 300 is provided with a horizontally extending connecting pipe 320; the fastening nut 400 is threadedly connected to the first threaded shaft 210 and cooperates with the plain concrete wall 100 to clamp the base plate 300; the series member 500 is movably connected with the first clamping member 600 and the second clamping member 700, and the series member 500 and the first clamping member 600 clamp and fix the connecting pipe 320 through a detachable first fastener; the series member 500 and the second clamping member 700 clamp and fix the steel pipe 101 through a detachable second fastener.

[0043] The utility model provides a connection structure for a plain concrete wall and a steel pipe frame. The first threaded shaft 210 extending from the water-stop screw assembly 200 cooperates with the fastening nut 400 to realize the installation and fixation of the base plate 300 and the plain concrete wall 100. There is no need to punch holes in the plain concrete wall 100, and the subsequent removal of bolts and patching of holes is avoided, thereby improving the surface quality of the plain concrete wall 100, reducing construction, and improving construction convenience. The series connection member 500 cooperates with the first clamping member 600 and the second clamping member 700 to connect the connecting pipe 320 and the steel pipe 101 in series, which has a stabilizing effect on the steel pipe 101, prevents the steel pipe 101 from lateral tilting and instability, and increases the overall stability and bearing capacity of the steel pipe 101 and the scaffold composed of the steel pipe 101. The series connection member 500 is movably connected with the first clamping member 600 and the second clamping member 700, and the first fastener and the second fastener are detachable, which is convenient for installation and disassembly, and convenient for repeated turnover.

[0044] Reference Figure 2 and Figure 5In some embodiments of the utility model, the serial member 500 includes a first clamping arc plate 510, one end of the first clamping arc plate 510 and the first clamping member 600 are both semicircular arc-shaped. One end of the first clamping arc plate 510 is hinged to the first clamping member 600, and the other end is provided with a first connecting block 511. The first clamping member 600 is provided with a second connecting block 610 corresponding to the first connecting block 511, and the first connecting block 511 and the second connecting block 610 are connected by a first fastener. The hinge can facilitate the movement of the first clamping member 600 to achieve clamping or loosening of the connecting pipe 320, which is convenient for installation and disassembly.

[0045] Reference Figure 2 and Figure 5 In a specific embodiment of the utility model, the first fastener is a first bolt 620 and a first nut. The first connecting block 511 and the second connecting block 610 are provided with corresponding holes and are penetrated by the first bolt 620. In order to reduce structural interference, the hole shape of the first connecting block 511 and the second connecting block 610 is a waist-shaped hole. The first bolt 620 is threadedly connected with the first nut. A bolt head is provided at one end of the first bolt 620, and the other end extends out of the hole of the first connecting block 511 and the second connecting block 610 and is threadedly connected with the first nut. Tightening the first nut can make the first connecting block 511 and the second connecting block 610 approach each other, thereby driving the first clamping arc plate 510 and the first clamping piece 600 to clamp and fix the connecting pipe 320. When disassembling, it only needs to remove the first nut and the first bolt 620.

[0046] Reference Figure 2 and Figure 5 In a further embodiment of the present invention, the series member 500 includes a second clamping arc plate 520, one end of the second clamping arc plate 520 is fixedly connected to the first clamping arc plate 510, and the other end is hinged to the second clamping member 700, and a pressing plate 710 is provided at one end of the second clamping member 700 away from the hinge. The second fastener is a clamping screw 530 threadedly connected to the series member 500, and the clamping screw 530 is used to clamp the pressing plate 710 so that the second clamping member 700 and the second clamping arc plate 520 can clamp the steel The tube 101 is clamped and fixed, and screwing the clamping screw 530 can compress the pressure plate 710 to push the second clamping piece 700 and the second clamping arc plate 520 closer and clamp the steel tube 101. When disassembling, you only need to screw the clamping screw 530 to loosen the pressure plate 710 and avoid the moving path of the pressure plate 710, so that the second clamping arc plate 520 and the pressure plate 710 rotate open, thereby separating from the steel tube 101. The disassembly is simple and convenient, and there is no need to completely remove the clamping screw 530, which is convenient for subsequent reuse.

[0047] Reference Figure 5 and Figure 6In a further embodiment of the utility model, the series member 500 includes an L-shaped mounting plate 540, which is fixedly connected to the first clamping arc plate 510. The L-shaped mounting plate 540 is provided with a threaded hole 541, and the clamping screw 530 is threadedly connected to the threaded hole 541. The L-shaped mounting plate 540 provides an installation position for the clamping screw 530 to facilitate its alignment and contact with the pressure plate 710.

[0048] Reference Figure 1 and Figure 2 In a further embodiment of the present invention, the connecting pipe 320 is perpendicular to the surface of the exposed concrete wall 100, and the opening of the second clamping arc plate 520 faces toward or away from the surface of the exposed concrete wall 100. Figure 6 As shown, the opening of the second clamping arc plate 520 faces the wall surface of the plain concrete wall 100, so that during installation, the series member 500 can be moved and adjusted along the connecting pipe 320 to the position where the steel pipe 101 is embedded in the opening groove of the second clamping arc plate 520, which facilitates installation and reduces structural interference during installation; if the opening of the second clamping arc plate 520 is parallel to the wall surface of the plain concrete wall 100, the series member 500 moves along the connecting pipe 320 and cannot allow the steel pipe 101 to be embedded in the opening groove of the second clamping arc plate 520. When the fixed base plate 300 needs to be installed, the steel pipe 101 needs to be embedded in the opening groove of the second clamping arc plate 520, otherwise the subsequent installation cannot be achieved, resulting in stricter installation requirements and more troublesome.

[0049] Reference Figure 6 In a further embodiment of the utility model, the L-shaped mounting plate 540 includes an extension plate 542 fixedly connected to the first clamping arc plate 510 and a vertical plate 543 connected to the extension plate 542 and extending toward one side of the second clamping arc plate 520, and a threaded hole 541 is provided on the vertical plate 543. The second clamping arc plate 520 is fixedly connected to the first clamping arc plate 510 through a connecting plate 521. The connecting plate 521 is parallel to the vertical plate 543. The connecting plate 521 allows the second clamping arc plate 520 and the first clamping arc plate 510 to have sufficient clearance to set the pressure plate 710 and the clamping screw 530.

[0050] Reference Figure 6 In a further embodiment of the utility model, a first reinforcing rib 544 is provided between the extension plate 542 and the vertical plate 543 to improve the structural strength of the vertical plate 543, and a second reinforcing rib 522 is provided between the connecting plate 521 and the second clamping arc plate 520 to improve the structural strength of the second clamping arc plate 520. The first reinforcing rib 544 and the L-shaped mounting plate 540 both avoid the moving path of the pressure plate 710 to avoid structural interference, so that the pressure plate 710 and the second clamping member 700 can be released from the steel pipe 101 and can be completely separated from the steel pipe 101, thereby realizing disassembly.

[0051] In a further embodiment of the present invention, two fastening nuts 400 are provided and abut against each other, thereby achieving an anti-loosening effect.

[0052] Reference Figures 2 to 4 In some embodiments of the present invention, the water-stop screw assembly 200 includes a central screw 220 , an adjusting rod 230 and a plugging sleeve 240 .

[0053] A second threaded shaft 221 is provided at both ends of the central screw 220, and a water stop ring 222 is provided at the center of the central screw 220; one end of the adjusting rod 230 is threadedly connected to the second threaded shaft 221, and the first threaded shaft 210 is provided at the other end of the adjusting rod 230, and a threaded connecting hole 232 is provided at the end of the adjusting rod 230, so as to achieve threaded connection with the second threaded shaft 221; the plugging sleeve 240 is sleeved on the adjusting rod 230, and the plugging sleeve 240 can be made of rubber or silicone material.

[0054] The adjusting rod 230 and the plugging sleeve 240 are pre-buried in the exposed concrete wall 100, and the end portion of the first threaded shaft 210 of the adjusting rod 230 protrudes from the exposed concrete wall 100. Thus, the connecting sleeve 400 connected to the end of the first threaded shaft 210 can be removed after the construction is completed.

[0055] The utility model provides a detachable water-stop screw device for a plain concrete wall, which achieves a water-stopping effect through a water-stop ring, and further achieves a blocking effect on both ends of a central screw 220 by using plugging sleeves 240 at both ends, thereby reducing the infiltration and flow of water along the central screw 220; the plugging sleeve 240 is threadedly connected to the second threaded shaft 221 through an adjusting rod 230, so that the plugging sleeve 240 can be threadedly adjusted in position to adapt to different wall thicknesses.

[0056] Reference Figure 3 and Figure 7 In some embodiments of the utility model, the end of the adjusting rod 230 facing the water stop ring 222 is provided with a limit ring 231 protruding outward, the first threaded shaft 210 is threadedly connected with a limit nut 211, and the plugging sleeve 240 is located between the limit nut 211 and the limit ring 231. The limit nut 211 and the limit ring 231 are used to realize the axial limit fixation of the plugging sleeve 240, which is convenient for installation. In addition, the first threaded shaft 210 can provide an installation structure for the limit nut 211 and the base plate 300 at the same time, making the structure more streamlined.

[0057] Reference Figure 1, transverse pre-embedded steel bars 102 and vertical steel bars 103 are pre-embedded in the exposed concrete wall 100, and the transverse pre-embedded steel bars 102 and the vertical steel bars 103 are connected to form a steel mesh, thereby ensuring that the structural strength of the exposed concrete wall 100 meets the construction requirements. In some embodiments of the utility model, a hook assembly 800 is also included, which is used to hang the central screw 220 on the transverse pre-embedded steel bars 102, so that during the pre-installation before pouring to form the exposed concrete wall 100, the hook assembly 800 can be used to hang the entire set of equipment on the transverse pre-embedded steel bars 102, thereby achieving the effect of pre-installation, and then concrete is poured to form the exposed concrete wall 100, and the central screw 220 is fixed in the exposed concrete wall 100, so that before pouring, the position of the detachable water-stop screw device is relatively stable. In order to ensure stable hanging, two hook assemblies 800 can be set.

[0058] Reference Figure 8 In a further embodiment of the utility model, the hook assembly 800 includes a hook ring 810 sleeved on the second threaded shaft 221 and a hook 820 connected to the hook ring 810 and used to hook the transverse pre-embedded steel bar 102. The two hook assemblies 800 can be arranged according to the spacing of the transverse pre-embedded steel bars 102, so as to determine whether the hook ring 810 is sleeved on the central screw 220 or the second threaded shaft 221 according to actual conditions. The hook 820 can be adjusted in height vertically relative to the hook ring 810, thereby adjusting the installation height of the central screw 220. Specifically, the hook ring 810 is provided with a vertical rod 811 extending upward, and a sliding cylinder 821 sleeved on the vertical rod 811 is provided on one side of the hook 820. A set screw 822 is connected to the peripheral wall of the sliding cylinder 821. A threaded hole penetrating the wall thickness is provided on the peripheral wall of the sliding cylinder 821. The set screw 822 is connected to the threaded hole. The set screw 822 is tightly pressed against the peripheral wall of the vertical rod 811 to fix the position of the vertical rod 811 and the sliding cylinder 821. The sliding cylinder 821 can slide and rise along the vertical rod 811 to adjust the position and fix the position through the set screw 822, thereby adjusting the relative height of the hook ring 810 and the hook 820 to adjust the installation height of the central screw 220, thereby improving the applicability of the device.

[0059] like Fig. 9 As shown, in some other embodiments, a horizontal threaded hole can be set on one side of the hook ring 810, and a fixing screw 823 can be installed in the threaded hole to clamp the transverse embedded steel bar 102, so that the hook assembly 800 is hooked on the transverse embedded steel bar 102 more stably and will not shake.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A connection structure for a bare concrete wall and a steel pipe frame, characterized in that: include: Fair-faced concrete wall (100); A water-stop screw assembly (200) pre-buried in a fair-faced concrete wall (100), wherein at least one end of the water-stop screw assembly (200) is provided with a first threaded shaft (210) extending out of the fair-faced concrete wall (100); The base plate (300) is provided with a through hole (310) for the first threaded shaft (210) to pass through, and is provided with a horizontally extending connecting pipe (320); A fastening nut (400) is threadedly connected to the first threaded shaft (210) and cooperates with the fair-faced concrete wall (100) to clamp the base plate (300); The series connection member (500) is movably connected with a first clamping member (600) and a second clamping member (700). The series connection member (500) and the first clamping member (600) clamp and fix the connecting pipe (320) via a detachable first fastener; the series connection member (500) and the second clamping member (700) clamp and fix the steel pipe (101) via a detachable second fastener.

2. The connection structure between the exposed concrete wall and the steel pipe frame according to claim 1 is characterized in that: The serial connection member (500) comprises a first clamping arc plate (510), one end of the first clamping arc plate (510) is hinged to the first clamping member (600), and the other end is provided with a first connecting block (511), the first clamping member (600) is provided with a second connecting block (610) corresponding to the first connecting block (511), and the first connecting block (511) and the second connecting block (610) are connected by a first fastener.

3. The connection structure between the exposed concrete wall and the steel pipe frame according to claim 2 is characterized in that: The series member (500) includes a second clamping arc plate (520), one end of the second clamping arc plate (520) is fixedly connected to the first clamping arc plate (510), and the other end is hinged to the second clamping member (700), and a pressure plate (710) is provided at the end of the second clamping member (700) away from the hinge, and the second fastener is a clamping screw (530) threadedly connected to the series member (500), and the clamping screw (530) is used to clamp the pressure plate (710) so that the second clamping member (700) and the second clamping arc plate (520) clamp and fix the steel pipe (101).

4. The connection structure for a bare concrete wall and a steel pipe frame according to claim 2, characterized in that: The first fastener is a first bolt (620) and a first nut. The first connecting block (511) and the second connecting block (610) are provided with corresponding holes and are penetrated by the first bolt (620). The first bolt (620) is threadedly connected to the first nut.

5. The connection structure between the exposed concrete wall and the steel pipe frame according to claim 3 is characterized in that: The serial component (500) comprises an L-shaped mounting plate (540), wherein the L-shaped mounting plate (540) is fixedly connected to the first clamping arc plate (510), and the L-shaped mounting plate (540) is provided with a threaded hole (541), and the clamping screw (530) is threadedly connected to the threaded hole (541).

6. The connection structure between the exposed concrete wall and the steel pipe frame according to claim 3 is characterized in that: The connecting pipe (320) is perpendicular to the surface of the fair-faced concrete wall (100), and the opening of the second clamping arc plate (520) faces toward or away from the surface of the fair-faced concrete wall (100).

7. The connection structure for a bare concrete wall and a steel pipe frame according to claim 5, characterized in that: The L-shaped mounting plate (540) includes an extension plate (542) fixedly connected to the first clamping arc plate (510) and a vertical plate (543) connected to the extension plate (542) and extending toward one side of the second clamping arc plate (520), the threaded hole (541) is provided on the vertical plate (543), and the second clamping arc plate (520) is fixedly connected to the first clamping arc plate (510) via a connecting plate (521), and the connecting plate (521) is parallel to the vertical plate (543).

8. The connection structure between the exposed concrete wall and the steel pipe frame according to claim 7, characterized in that: A first reinforcing rib (544) is provided between the extension plate (542) and the vertical plate (543), and a second reinforcing rib (522) is provided between the connecting plate (521) and the second clamping arc plate (520), and the first reinforcing rib (544) and the L-shaped mounting plate (540) both avoid the moving path of the pressure plate (710).

9. The connection structure between a bare concrete wall and a steel pipe frame according to claim 1, characterized in that: The fastening nuts (400) are provided with two and abut against each other.

10. The connection structure between a bare concrete wall and a steel pipe frame according to claim 1, characterized in that: The water-stop screw assembly (200) comprises: A central screw (220) is provided with a second threaded shaft (221) at both ends and a water stop ring (222) at the center; An adjusting rod (230), one end of which is threadedly connected to the second threaded shaft (221), and the first threaded shaft (210) is arranged at the other end of the adjusting rod (230); The blocking sleeve (240) is sleeved on the adjusting rod (230).

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