CN114961108B - Reinforcement cage - Google Patents

Abstract

The present invention provides a steel cage, comprising: a continuous stirrup, which is defined as having two opposite side regions and a middle region therebetween, and comprises: a plurality of first portions extending along the Z-axis direction, the plurality of first portions being located in the two side regions; a plurality of second portions connecting two adjacent plurality of first portions along the X-axis direction; and a plurality of third portions connecting two plurality of first portions along the Y-axis direction, the plurality of third portions being located in the middle region. In addition, the continuous stirrup comprises a plurality of longitudinal ribs extending in the X-axis direction and connecting the plurality of first portions of the continuous stirrup.

Description

Steel Cage

Technical Field

The present disclosure relates to a reinforcement cage, and in particular to a reinforcement cage for a beam.

Background Art

Steel cages used in buildings, such as those in beam structures, should be equipped with a certain number of stirrups to prevent the concrete cover from splitting and collapsing. The function of stirrups is to provide shear strength and connect the longitudinal reinforcement and the concrete in the compression zone to work together. In addition, they are used to fix the position of the main reinforcement so that the various reinforcements in the beam form a reinforcement skeleton. At the same time, stirrups can limit the development of cracks inside the concrete, improve the bonding strength, and also limit the width of cracks reaching the surface of the component, thereby improving the bonding strength.

In the preparation process of the traditional beam reinforcement cage, the U-shaped plane stirrups are fixed one by one on the longitudinal reinforcement by welding or binding. However, the process of making the above reinforcement cage is quite labor-intensive and time-consuming to fix a large number of stirrups one by one on the longitudinal reinforcement. In addition, the U-shaped plane stirrups have two upper free ends extending outward. In order to prevent people from being stabbed by the free ends due to accidents such as falls, it is necessary to install sheaths on the free ends or cover other protective materials on the free ends during the construction process. However, installing these protective measures is quite time-consuming and generates unnecessary construction costs and waste. Therefore, a reinforcement cage that can truly protect the safety of people on the construction site, is easy to construct and saves materials is longed for by the construction and construction industry.

Summary of the invention

Therefore, in order to solve the above problems, an embodiment of the present invention provides a steel cage with continuous stirrups to reduce the manpower and time required to fix the stirrups on the longitudinal bars. In addition, since the continuous stirrup structure does not have a free end or a tip extending outward, there is no need to add additional sheaths and protective objects, which can effectively improve the safety of the construction site.

Some embodiments of the present disclosure provide a steel cage, comprising: a continuous stirrup, which is defined to have a first side region, a second side region, and a middle region between the first side region and the second side region, wherein the first side region and the second side region are respectively located on opposite sides of the middle region and are substantially parallel to each other, and are substantially perpendicular to the middle region. The continuous stirrup comprises: a plurality of first portions extending along the Z-axis direction, the plurality of first portions are located in the first side region and the second side region, and are arranged substantially in parallel; a plurality of second portions connecting two adjacent first portions along the X-axis direction; and a plurality of third portions connecting two opposite first portions along the Y-axis direction, the plurality of third portions being located in the middle region. In addition, the continuous stirrup comprises a plurality of longitudinal ribs extending in the X-axis direction and connecting the plurality of first portions of the continuous stirrup.

Some embodiments of the present disclosure also provide a steel cage, comprising: a continuous stirrup, which is defined as having a first side region, a second side region, and a middle region between the first side region and the second side region, wherein the first side region and the second side region are respectively located on opposite sides of the middle region and are substantially perpendicular to the middle region. The continuous stirrup comprises: a plurality of first portions extending along the Z-axis direction, the plurality of first portions are located in the first side region and the second side region and are substantially parallel; a plurality of first positioning portions connecting one end of the plurality of first portions away from the middle region, the plurality of first positioning portions are bent toward the inner side of the continuous stirrup relative to the plurality of first portions; a plurality of second positioning portions connecting one end of the plurality of second portions away from the middle region, the plurality of second positioning portions are bent toward the inner side of the continuous stirrup relative to the plurality of second portions; a plurality of second portions connecting two adjacent plurality of first portions along the X-axis direction; and a plurality of third portions connecting two opposite plurality of first portions along the Y-axis direction, the plurality of third portions are located in the middle region. In addition, the continuous stirrup includes a plurality of longitudinal ribs extending in the X-axis direction and connecting the plurality of first portions of the continuous stirrup.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a steel cage according to an embodiment of the present disclosure.

FIG. 2 shows a planar structure for making the reinforcement cage shown in FIG. 1 .

FIG. 3 shows the continuous stirrups formed by bending the planar structure of FIG. 2 .

FIG. 4 is a graph showing a performance test of a steel cage of an embodiment of the present disclosure and a steel cage of a control group.

FIG. 5 is a schematic structural diagram of a steel cage according to another embodiment of the present disclosure.

FIG. 6 shows a planar structure for making a reinforcement cage according to another embodiment of the present disclosure.

FIG. 7 is a schematic diagram showing a structure after partial processing of the planar structure of FIG. 6 .

FIG. 8 shows a second schematic diagram of further processing the structure of FIG. 7 to form a continuous stirrup.

FIG. 9 shows a planar structure of a cap for making a reinforcing cage according to another embodiment of the present disclosure.

FIG. 10 is a schematic structural diagram of a cap according to another embodiment of the present disclosure.

FIG. 11 shows a schematic diagram 1 of assembling the cap in another embodiment of the present disclosure to the continuous stirrup to form a reinforcement cage.

FIG. 12 shows a second schematic diagram of assembling the cap in another embodiment of the present disclosure to the continuous stirrups to form a reinforcement cage.

FIG. 13 shows a third schematic diagram of assembling the cap in another embodiment of the present disclosure to the continuous stirrups to form a reinforcement cage.

DETAILED DESCRIPTION

In order to more clearly understand the features, contents and advantages of the present invention and the effects that can be achieved, the present invention is hereby described in detail in the form of embodiments in conjunction with the accompanying drawings. The drawings used therein are only intended to illustrate and assist the specification. Therefore, the proportions and configuration relationships of the attached drawings should not be interpreted or used to limit the claims of the present invention.

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

Unless otherwise specified, spatial descriptions such as "above", "below", "upward", "left", "right", "downward", "body", "base", "vertical", "horizontal", "side", "higher", "lower", "upper", "above", "below", etc. are indicated with respect to the directions shown in the figures. 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 change the advantages of the embodiments of the present invention. For example, in the description of some embodiments, providing an element "on" another element may cover the situation where the former element is directly on the latter element (e.g., in physical contact with the latter element) and the situation where one or more intervening elements are located between the former element and the latter element.

As used herein, the terms "substantially," "substantially," "substantial," and "about" are used to describe and take into account minor variations. When used in conjunction with an event or circumstance, the terms may mean both the situation where the event or circumstance explicitly occurs and the situation where the event or circumstance closely occurs.

FIG1 is a schematic diagram showing the structure of a steel cage according to an embodiment of the present disclosure. In this embodiment, the steel cage 1 comprises a continuous stirrup 100 and a plurality of longitudinal ribs 150. The continuous stirrup 100 is a three-dimensional structure formed by bending a steel bar, and has a first side region 101, a second side region 102, and a middle region 103. The middle region 103 is between the first side region 101 and the second side region 102, wherein the first side region 101 and the second side region 102 are respectively located on opposite sides of the middle region 103 and are substantially perpendicular to the middle region 103.

The continuous stirrup 100 is formed by connecting a plurality of parts that are bent to each other. In one embodiment, the continuous stirrup 100 includes a plurality of first parts 110, a plurality of second parts 120, and a plurality of third parts 130. The plurality of first parts 110 are located in the first side region 101 and the second side region 102, and extend along the Z-axis direction and are arranged substantially parallel to each other, wherein each two first parts 110 are arranged in pairs in the Y-axis direction. The second parts 120 are staggered along the X-axis direction and are configured to connect two adjacent first parts 110. In some embodiments, the two staggered second parts 120 do not overlap or substantially do not overlap in the Y-axis direction. Specifically, when observed in the Y-axis direction, one end of one of the two staggered second parts 120 may overlap with one end of the other of the two second parts 120 in one embodiment but not in another embodiment. The third part 130 is located in the middle region 103 and connects two first parts 110 that are opposite to each other in the Y-axis direction along the Y-axis direction.

In some embodiments, the two free ends of the continuous stirrup 100 respectively include hooks 140. Each hook 140 is bent from the first portion adjacent thereto along the X-axis direction. In the embodiment shown in FIG. 1 , the two hooks 140 are located on the same side of the continuous stirrup 100, but the present disclosure is not limited thereto. In another embodiment, the hooks 140 at the two free ends of the continuous stirrup 100 may be located on opposite sides in the Y-axis direction. The provision of the hooks 140 can prevent or avoid personnel from being stabbed during construction at a construction site due to touching the sharp free ends of the continuous stirrup 100. In another embodiment, the hooks 140 of the continuous stirrup 100 are omitted, and the first portion 110 having the two free ends of the continuous stirrup 100 has a shorter length in the Z-axis direction than the remaining first portion 110, thereby preventing or avoiding personnel from being stabbed.

In some embodiments, the steel cage 1 includes four longitudinal ribs 150 extending along the X-axis direction, wherein two longitudinal ribs 150 are disposed opposite to each other in the Y-axis direction and connected to the intersection of the first portion 110 and the third portion 130 of the continuous stirrup 100. The other two longitudinal ribs 150 are disposed opposite to each other in the Y-axis direction and connected to the plurality of second portions 120. The connection between the longitudinal ribs 150 and the continuous stirrup 100 can be completed by tying with wire (not shown) or by welding.

In some embodiments, the steps of making the continuous stirrup 100 of FIG. 1 include the following steps: bending the long straight steel bar to form a planar structure 100' having a plurality of vertical bends as shown in FIG. 2. At this time, the first side region 101, the second side region 102, and the middle region 103 are located on the same plane. In some embodiments, during the process of making the planar structure 100' or after the planar structure 100' is made, the two free ends of the long straight steel bar are further bent inward to form hooks 140.

Next, the planar structure 100' is bent to form the continuous stirrup 100 as shown in FIG3. The step of bending the planar structure 100' may include supporting at least a portion of the first side region 101 with a long strip mold (not shown), and applying a thrust to the first side region 101 with the long strip mold, so that the first side region 101 is bent upward relative to the middle region 103. Next, supporting at least a portion of the second side region 102 with the same or another long strip mold (not shown), and applying a thrust to the second side region 102 with the long strip mold, so that the second side region 102 is bent upward relative to the middle region 103, so as to form the continuous stirrup 100 as shown in FIG3. At this time, the first side region 101 and the second side region 102 are respectively located on opposite sides of the middle region 103 and are substantially parallel to each other, and are substantially perpendicular to the middle region 103.

When the steel cage 1 is used as a building structure (e.g., a small beam that is not the main load-bearing beam) at a construction site, the continuous stirrup 100 has a side with multiple second parts 120 placed upward. Since the second part 120 is arranged substantially horizontally and the connection between the second part 120 and the first part 110 has a smooth shape, accidental injuries to construction site personnel can be prevented.

FIG4 shows a graph of a performance test of a steel cage 1 according to an embodiment of the present invention and a conventional steel cage according to a control group. The steel cage of the control group is composed of a plurality of stirrups that are separately arranged and bent into a U shape as described in the [Prior Art] of the specification. As shown in FIG4 , the steel cage 1 according to an embodiment of the present disclosure (represented by line 51) and the control steel cage (represented by line 52) can withstand approximately the same external force when the displacement ratio is less than about 1%. However, when the displacement ratio exceeds 1%, the external force that the steel cage 1 according to the present disclosure can withstand is significantly better than that of the steel cage of the control group. Therefore, the steel cage 1 according to an embodiment of the present disclosure has a better ability to withstand external forces than the steel cage of the control group.

Table 1 shows the test data of the steel cage 1 of some embodiments of the present disclosure and the steel cage of the control group. It can be seen from Table 1 that the steel cage 1 of some embodiments of the present disclosure performs better than the steel cage of the control group in terms of ultimate load and maximum displacement, and only requires 85% of the material usage of the steel cage of the control group.

Table 1

project Control group Steel Cage 2 Ultimate load (tf) 25.03(100%) 26.79(107%) Maximum displacement (%) 7.73 (100%) 7.67 (99.2%) Stirrup quantity (%) 100% 85%

FIG5 shows a schematic diagram of the structure of a steel cage 2 according to another embodiment of the present disclosure. The steel cage 2 includes a plurality of continuous stirrups 200, a plurality of longitudinal ribs 250, and a plurality of cap structures, such as a first cap structure 310 and a second cap structure 320. The plurality of continuous stirrups 200 are arranged in sequence along the X-axis direction and connected by the longitudinal ribs 250 to form a long structure required for the main load-bearing beam. The first cap structure 310 and the second cap structure 320 are configured to span over the continuous stirrups 200 and overlap each other without interfering with each other. It is understood that although FIG5 only shows three continuous stirrups 200 and one first cap structure 310 and one second cap structure 320, the present disclosure is not limited thereto. The number of continuous stirrups 200, the first cap structure 310, and the second cap structure 320 can be increased accordingly according to the required design length of the steel cage 2.

In some embodiments of the present disclosure, the continuous stirrup 200 in Figure 6 is made by bending long straight steel bars to form a planar structure 200' with multiple vertical bends as shown in Figure 7. At this time, the first side region 201, the second side region 202 and the middle region 203 are located on the same plane. Next, the planar structure 200' is bent to form an intermediate structure 200" having a first positioning portion 260 and a second positioning portion 270 as shown in Figure 8. For example, a long strip mold (not shown) can be used to support one end of the first side area 201 away from the middle area 203, and the long strip mold is used to apply a thrust to the first side area 201 so that the outer end of the first side area 201 is bent upward. Next, the same or another long strip mold (not shown) is used to support one end of the second side area 202 away from the middle area 203, and the long strip mold is used to apply a thrust to the second side area 202 so that the second side area 202 is bent upward relative to the middle area 203. In some embodiments, in the process of making the intermediate structure 200", the two free ends of the long straight steel bars are further bent inward to form a hook 240.

Next, the intermediate structure 200" shown in FIG8 is bent to form the continuous stirrup 200 shown in FIG6, including using a long strip mold (not shown) to support at least a portion of the first side region 201, and using the long strip mold to apply a thrust to the first side region 201, so that the first side region 201 is bent upward relative to the middle region 203. Next, the same or another long strip mold (not shown) is used to support at least a portion of the second side region 202, and the long strip mold is used to apply a thrust to the second side region 202, so that the second side region 202 is bent upward relative to the middle region 203, so as to form the continuous stirrup 200 shown in FIG6. At this time, the first side region 201 and the second side region 202 are respectively located on opposite sides of the middle region 203 and are approximately parallel to each other, and are approximately perpendicular to the middle region 203.

As shown in Fig. 6, the continuous stirrup 200 has a first side region 201, a second side region 202 and a middle region 203. The middle region 203 is between the first side region 201 and the second side region 202, wherein the first side region 201 and the second side region 202 are respectively located at opposite sides of the middle region 203 and are substantially perpendicular to the middle region 203.

The continuous stirrup 200 is formed by connecting a plurality of parts bent to each other, including a plurality of first parts 210, a plurality of second parts 220, a plurality of third parts 230, a plurality of first positioning parts 260, and a plurality of second positioning parts 270. The plurality of first parts 210 are located in the first side region 201 and the second side region 202. In addition, the plurality of first parts 210 extend along the Z-axis direction and are arranged substantially parallel to each other, wherein every two first parts 210 are arranged in pairs in the Y-axis direction. The first positioning part 260 is located in the first side region 201 and connects one end of the first part 210 located in the first side region 201 away from the middle region 203. The second positioning part 270 is located in the second side region 202 and connects one end of the first part 210 located in the second side region 202 away from the middle region 203. The first positioning part 260 and the second positioning part 270 are each bent toward the inner side of the continuous stirrup 200 relative to the first part 210 to which they are connected.

The second portions 220 are staggered along the X-axis direction and are configured to connect two adjacent first positioning portions 260 or two adjacent second positioning portions 270. In some embodiments, the two staggered second portions 220 do not overlap or substantially do not overlap in the Y-axis direction. Specifically, when viewed in the Y-axis direction, one end of one of the two second portions 220 staggered along the X-axis direction may overlap with one end of the other of the two second portions 220 in some embodiments, but not in other embodiments. The third portion 230 is located in the middle area 203 and connects the two first portions 210 opposite to each other in the Y-axis direction along the Y-axis direction.

In some embodiments, the two free ends of the continuous stirrup 200 respectively include a hook 240. The hook 240 is bent toward the inner side of the continuous stirrup 200 along the Y-axis direction. In the embodiment shown in FIG. 8 , the hook 240 is located on the opposite side of the continuous stirrup 200, but the present disclosure is not limited thereto. In another embodiment, the hooks 240 at the two free ends of the continuous stirrup 200 may be located on the same side in the Y-axis direction. The provision of the hook 240 can prevent or avoid personnel from being stabbed by touching the sharp free end of the continuous stirrup 200 during construction at a construction site. In another embodiment, the hook 240 of the continuous stirrup 200 is omitted, and the first portion 210 having two free ends is arranged to have a shorter length in the Z-axis direction than the remaining first portion 210, thereby preventing or avoiding personnel from being stabbed.

In some embodiments, the first cap structure 310 and the second cap structure 320 in FIG. 5 are each a three-dimensional structure formed by continuously bending a single stirrup. In some embodiments, the method of making the first cap structure 310 and the second cap structure 320 includes bending two long straight steel bars to form a plane structure 310', 320' with multiple vertical bends as shown in FIG. 10. The step of making the first cap structure 310 and the second cap structure 320 further includes bending the plane structure 310', 320' to form the first cap structure 310 and the second cap structure 320 with the first buckle part 311, 321 and the second buckle part 312, 322 as shown in FIG. 9. For example, a long strip mold (as shown) can be used to abut against the first end of the cross-connection structure 313, 323, and the long strip mold can be used to apply a thrust to the cross-connection structure 313, 323, so that the first end of the first buckle part 311, 321 is bent downward. Next, the same or another long strip mold (not shown) is used to press against the second ends of the bridging structures 313 and 323, and the long strip mold is used to apply a thrust to the bridging structures 313 and 323 so that the second ends of the bridging structures 313 and 323 are bent downward to form the first cap structure 310 and the second cap structure 320 as shown in FIG. 9 .

The first cap structure 310 includes a plurality of first buckling portions 311, a plurality of second buckling portions 312, and a plurality of cross-connection structures 313. The plurality of cross-connection structures 313 are arranged substantially in parallel in the X-axis direction. Starting from the first cross-connection structure 313, the first ends of every two cross-connection structures 313 in the Y-axis direction are connected to the first buckling portion 311. The first buckling portion 311 is substantially a U-shaped structure and has a first width W1 in the X-axis direction. In addition, the second ends of every two cross-connection structures 313 in the Y-axis direction are connected to the second buckling portion 312. The second buckling portion 312 is staggered with the first buckling portion 311 in the X-axis direction. The second buckling portion 312 is substantially a U-shaped structure and has a second width W2 in the X-axis direction. The first width W1 is narrower than the second width W2. In one embodiment, the first cap structure 310 has three first buckling portions 311 and two second buckling portions 312, but the present disclosure is not limited thereto. The number of the first buckling portions 311 and the second buckling portions 312 can be adjusted as needed. In some embodiments, the buckling portion with a narrower width (such as the first buckling portion 311) is disposed at the outermost side in the X-axis direction to increase installation convenience.

In some embodiments, the first buckle portion 311 and the second buckle portion 312 are each bent relative to the cross-over structure 313. In one embodiment, the first buckle portion 311 and the second buckle portion 312 have different bending arcs relative to the cross-over structure 313. For example, the first buckle portion 311 has a first bending arc a1 relative to the cross-over structure 313, and the second buckle portion 312 has a second bending arc a2 relative to the cross-over structure 313, and the first bending arc a1 is greater than the second bending arc a2. In an exemplary embodiment, the first bending arc ranges from 130 degrees to 160 degrees, and the second bending arc ranges from 75 degrees to 95 degrees. The first buckle portion 311 having a larger bending arc will facilitate the combination of the first cap structure 310 and the steel cage 200.

In some embodiments, the second cap structure 320 includes a plurality of first buckling portions 321, a plurality of second buckling portions 322, and a plurality of bridging structures 323. In the embodiment shown in FIG9, the structure of the second cap structure 320 is the same as that of the first cap structure 310, and is not described again for simplicity.

Referring to FIG11 , the method of assembling the steel cage 2 includes arranging a plurality of continuous stirrups 200 along the X-axis direction so that the distance between adjacent continuous stirrups 200 is substantially the same as the distance between two adjacent first portions 210 in the corresponding continuous stirrups 200. In the embodiment shown in FIG11 , although only three continuous stirrups 200 are shown, the present disclosure is not limited thereto. The number of continuous stirrups 200 can be increased or decreased according to the designed length of the steel cage 2.

The method of assembling the steel cage 2 further includes connecting a plurality of longitudinal ribs 250 extending in the X-axis direction to a plurality of first portions 210 of the continuous stirrup 200. In some embodiments, two longitudinal ribs 250 located below the steel cage 2 are respectively fixed to the intersection of the third portion 230 of the continuous stirrup 200 and two adjacent first portions 210. In addition, two longitudinal ribs 250 located above the steel cage 2 are respectively connected to the first positioning portion 260 and the second positioning portion 270. Furthermore, they are sandwiched between the first portion 210 and the first positioning portion 260 or between the first portion 210 and the second positioning portion 270.

Next, the first cap structure 310 is placed across one or more continuous stirrups 200. Specifically, as shown in FIG11, the method for setting the first cap structure 310 may include firstly fastening the first buckle portion 311 of the first cap structure 310 to the first side region 201 of the continuous stirrup 200, wherein the first buckle portion 311 is located between the two first portions 210 and is staggered with the second portion 220 of the continuous stirrup 200 in the Y-axis direction. At this time, as shown in FIG11, the first buckle portion 311 directly fastens the longitudinal rib 250 located in the first side region 201. Next, as shown in FIG12, the second buckle portion 312 of the first cap structure 310 is fastened to the second side region 202 of the continuous stirrup 200, wherein the second buckle portion 312 abuts against the outer side of the first portion 210 of the second side region 202.

Next, the second cap structure 320 is placed across one or more continuous stirrups 200. Specifically, as shown in FIG13 , the method for setting the second cap structure 320 may include firstly fastening the first fastening portion 321 of the second cap structure 320 to the second side region 202 of the continuous stirrup 200, wherein the first fastening portion 321 is located between the two first portions 210 and overlaps with the second portion 220 of the continuous stirrup 200 in the Y-axis direction. At this time, as shown in FIG13 , the first fastening portion 321 directly fastens the longitudinal rib 250 located in the second side region 202, and the first fastening portion 321 of the second cap structure 320 is located in the second fastening portion 312 of the first cap structure 310. Next, the second fastening portion 322 of the second cap structure 320 is fastened to the first side region 201 of the continuous stirrup 200 to form the steel cage 2 as shown in FIG5 .

In some embodiments, after the first cap structure 310 and the second cap structure 320 span multiple continuous stirrups 200 and connect the first side region 201 and the second side region 202, the first cap structure 310 and the second cap structure 320 are overlapped and arranged above the continuous stirrups 200 without interfering with each other. Specifically, the multiple first buckle parts 311 of the first cap structure 310 and the multiple first buckle parts 321 of the second cap structure 320 are respectively located on the opposite sides of the continuous stirrup 200 in the Y-axis direction, and the multiple second buckle parts 312 of the first cap structure 310 and the multiple second buckle parts 322 of the second cap structure 320 are respectively located on the opposite sides of the continuous stirrup 200 in the Y-axis direction.

When the steel cage 2 is used as a building structure (e.g., a beam that mainly bears load) at a construction site, the continuous stirrup 200 is placed with one side having multiple second portions 220 facing upward. Since the second portion 220 is arranged substantially horizontally, and the connection between the second portion 220 and the first portion 210 is the first positioning portion 260 and the second positioning portion 270 having a smooth shape, it can prevent people from being stabbed.

Table 2 shows the test data of the steel cage 2 of some embodiments of the present disclosure and the steel cage of the control group. The steel cage of the control group is composed of a plurality of stirrups that are separately arranged and bent into a U shape as described in [Prior Art] of the specification and a traditional mesh top cover. It can be seen from Table 2 that the steel cage 2 of some embodiments of the present disclosure is superior to the steel cage of the control group in terms of ideal yield force, maximum load and ultimate deflection, and only 87% of the material consumption is required compared to the steel cage of the control group.

Table 2

project Control group Steel Cage 2 Ideal yield deviation (%) 0.49(100%) 0.44(90%) Ideal yield strength (kN) 128.3 (100%) 142.9 (111%) Maximum load(kN) 141 (100%) 156 (111%) Limit deviation (%) 4.4(100%) 4.57(104%) Stirrup quantity (%) 100% 87%

The embodiments described above are only for illustrating the technical ideas and features of the present invention, and their purpose is to enable technical personnel in the relevant field to understand the content of the present invention and implement it accordingly. However, they cannot be used to limit the patent scope of the present invention. Equivalent changes or modifications made according to the spirit disclosed by the present invention should still be included in the patent scope of the present invention.

Explanation of symbols

1: Steel Cage

100: Continuous stirrups

100': Flat structure

101: First side area

102: Second side area

103: Third side area

110: Part 1

120: Part 2

130: Part 3

140: Hook

150: Longitudinal ribs

2: Steel Cage

200: Continuous stirrups

200': Plane structure

200”: Intermediate structure

201: First side area

202: Second side area

203: Third side area

210: Part 1

220: Part 2

230: Part 3

240: Hook

250: Longitudinal ribs

260: First positioning part

270: Second positioning part

310: First cap structure

310': Plane structure

311: First buckle portion

312: Second buckle portion

313: Crossover structure

320: Second cap structure

320': Plane structure

321: First buckle portion

322: Second buckle portion

323: Crossover structure

51: Line

52: Line

a1: first bending arc

a2: Second bending radius

W1: First width

W2: Second width.

Claims (3)

1. A reinforcement cage, comprising:

A continuous stirrup defined with a first side region, a second side region, and a middle region between the first side region and the second side region, wherein the first side region and the second side region are located on opposite sides of the middle region, respectively, and perpendicular to the middle region, the continuous stirrup comprising:

A plurality of first portions extending along the Z-axis direction, the plurality of first portions being located in the first side region and the second side region and being arranged in parallel;

A plurality of first positioning portions coupled to one end of the plurality of first portions located at the first side region remote from the intermediate region, the plurality of first positioning portions being curved toward an inner side of the continuous stirrup with respect to the plurality of first portions;

a plurality of second positioning portions joined to one end of the plurality of first portions located at the second side regions remote from the intermediate region, the plurality of second positioning portions being curved toward the inside of the continuous stirrup with respect to the plurality of first portions;

a plurality of second portions connecting adjacent two of the plurality of first portions in the X-axis direction; and

A plurality of third portions joining the two opposing first portions in the Y-axis direction, the plurality of third portions being located in the intermediate region;

A plurality of longitudinal ribs extending in the X-axis direction and joining the plurality of first portions of the continuous stirrup, wherein two of the plurality of longitudinal ribs are joined to the first positioning portion in the first side region and the second positioning portion in the second side region, respectively; and

The first cap structure and the second cap structure are respectively a three-dimensional structure formed by continuously bending a single stirrup, and are configured to span over the continuous stirrup and connect the first side edge area with the second side edge area, and the first cap structure and the second cap structure respectively comprise:

a plurality of bridging structures arranged in parallel in the X-axis direction and straddling the upper parts of the continuous stirrups;

A plurality of first fastening parts extending from one ends of the plurality of bridging structures by a first width in the X-axis direction and bending relative to the plurality of bridging structures; and

A plurality of second fastening parts extending from the other ends of the plurality of bridging structures by a second width in the X-axis direction and bending relative to the plurality of bridging structures, wherein the first width is narrower than the second width;

wherein the first buckling parts and the second buckling parts are arranged in a staggered way,

Wherein the first buckling part has a first bending radian relative to the bridging structure, the second buckling part has a second bending radian relative to the bridging structure, the first bending radian ranges from 130 degrees to 160 degrees, the second bending radian ranges from 75 degrees to 95 degrees,

Wherein the plurality of first snap-fit portions of the first cap structure snap-fit directly to the longitudinal ribs of the first positioning portion in the first side region, the plurality of second snap-fit portions of the first cap structure abut against the outer sides of the plurality of first portions of the second side region,

Wherein the plurality of first snap-fit portions of the second cap structure snap-fit directly to the longitudinal ribs of the second locating portion in the second side region, the plurality of second snap-fit portions of the second cap structure abutting the outside of the plurality of first portions of the first side region.

2. The reinforcement cage of claim 1, wherein the first and second cap structures are disposed over the continuous stirrup in an overlapping relationship and do not interfere with each other.

3. The reinforcement cage of claim 2, wherein the plurality of first snap-fit portions of the first cap structure and the plurality of first snap-fit portions of the second cap structure are located on opposite sides of the Y-axis direction, respectively, and the plurality of second snap-fit portions of the first cap structure and the plurality of second snap-fit portions of the second cap structure are located on opposite sides of the Y-axis direction, respectively.