KR102451188B1 - Corrugated steel plate having reinforcing bolt fastening holes - Google Patents

Abstract

The present invention provides a corrugated steel plate with a reinforcing bolt coupling hole and a reinforcing structure for a corrugated steel plate using the same. The corrugated steel plate with the reinforcing bolt coupling hole improves a coupling force and rigidity of a connection unit in the longitudinal direction of the corrugated steel plate adjacent to each other in the longitudinal direction by having the reinforcing bolt coupling hole through which an additional reinforcing connection bolt is coupled to the connection unit in the longitudinal direction. So, the corrugated steel plate with the reinforcing bolt coupling hole improves resistance on bending deflection in a joint unit in the longitudinal direction of a corrugated steel plate structure, thereby minimizing sagging. The corrugated steel plate with the reinforcing bolt coupling hole and the reinforcing structure for a corrugated steel plate using the same largely improve the coupling force and the rigidity of the joint unit in the longitudinal direction by simply connecting the adjacent corrugated steel plates without constructing an additional reinforcing member. So, the corrugated steel plate with the reinforcing bolt coupling hole and the reinforcing structure for a corrugated steel plate using the same minimize sagging in the vertical direction and improve construction convenience and structural stability, thereby improving reliability of the corrugated steel plate structure.

Description

Corrugated steel plate with reinforcing bolted holes {CORRUGATED STEEL PLATE HAVING REINFORCING BOLT FASTENING HOLES}

The present invention relates to a corrugated steel sheet having a reinforcing bolt fastening hole used for assembling a corrugated steel sheet structure, and more particularly, to a longitudinal connection part overlapping with neighboring corrugated steel sheets on both sides in the longitudinal direction, three longitudinal connection bolt fastening holes It is formed along the center line of the ridge and valley, and the reinforcement bolt fastening holes are formed at regular intervals in the longitudinal connection bolt fastening holes. It is related to the corrugated steel sheet that can be made.

In general, a corrugated steel sheet structure is formed by connecting a plurality of corrugated steel sheets formed by forming a structural steel sheet of a certain size into a corrugated shape of a predetermined standard using bolts in the longitudinal and width directions to form a cross section, and then forming a cross section around the corrugated steel sheet structure. It is a structure that supports the external load by the interaction between the soil and the corrugated steel plate structure by compacting the upper part and the upper part with backfill material.

In the case of the corrugated steel plate structure, it is used in the form of an arch structure, a box structure, or a box-type bridge structure (DSA: Deck Slab Arch Bridge), which is used in a road crossing passage, a cut-off tunnel, a piam tunnel, a bridge structure, and the like.

Such a corrugated steel sheet structure is formed by processing a corrugated steel sheet with increased rigidity to the curvature required in the drawing, forming bolt holes required for assembly, and hot-dip plating to improve durability. After the assembly is completed, waterproofing is applied to the area around the bolts connecting the neighboring corrugated steel plates and the overlapping parts of the corrugated steel plates, and then the backfilling materials and compaction work required by the structural calculation and specification are completed.

Meanwhile, according to the standard specification related to corrugated steel plate culverts (KCS 11 40 10: 2019), for corrugated steel plate structures, changes in the shape and size of the cross section must be measured immediately after assembly, during backfilling, and immediately after construction is completed. The biggest influence on the shape change is the vertical deflection, and there is a problem in that it is difficult to secure the strength especially at the corrugated steel plate joint.

In order to solve this problem, recently, Korean Patent Registration No. 10-1766311 discloses a 'corrugated steel sheet for increasing stiffness' in which four joint holes are formed at equal intervals in a corrugated steel plate joint, but this has three joint holes. Since the number of fastening bolts is simply added compared to the method of fastening with three bolts formed at the same interval, it is difficult to expect a clear improvement effect of the corrugated steel sheet joint by vertical deflection.

In addition, Korean Patent No. 10-1812282 discloses a 'corrugated steel plate structure for increasing rigidity' in which the first fastening means fastened to the four joint holes of the joint is composed of a multi-bolt set, but this is simply the number of joint holes. Since the bolts fastened to the joint holes are integrally formed with the 'corrugated steel plate for increasing rigidity' disclosed in Korean Patent Registration No. 10-1766311, the problem that substantial improvement effect of the corrugated steel plate joint by vertical deflection cannot be expected. have.

Republic of Korea Patent Publication No. 10-1766311 (2017.08.02.) Republic of Korea Patent Publication No. 10-1812282 (2017.12.19.) Republic of Korea Patent Publication No. 10-1620096 (2016.05.03.) Republic of Korea Patent Publication No. 10-1262106 (2013.05.02.)

It is an object of the present invention to provide a reinforcing bolt fastening hole to which an additional reinforcing connection bolt is fastened in the longitudinal connection part to improve the fastening force and rigidity of the longitudinal connection parts of the corrugated steel sheets adjacent to each other in the longitudinal direction, thereby making the longitudinal joint of the corrugated steel plate structure It is to provide a corrugated steel sheet having a reinforcing bolt fastening hole to further improve resistance to bending deformation at the part to minimize sagging.

In addition, by arranging the spacing from the bolt fastening hole for longitudinal connection to the reinforcement bolt fastening hole to be larger than the distance between the bolt fastening holes for longitudinal connection, to further improve the resistance to bending deformation in the longitudinal joint. will be.

In addition, the distance from the bolt fastening hole for longitudinal connection to the reinforcing bolt fastening hole is set to a specific distance in consideration of the setting environment of the corrugated steel sheet forming apparatus to improve the convenience of the corrugated steel sheet forming operation.

In order to achieve the above object, the present invention has three longitudinal connection bolt fastening holes in the longitudinal connection part overlapping with the neighboring corrugated steel plates on both sides in the longitudinal direction, spaced apart from each other at regular first intervals along the center line of the mountain and valley parts, , In the longitudinal connection part, a reinforcing bolt fastening hole is formed to be spaced apart at a second interval from a hole located in the center among the three longitudinal direction connecting bolt fastening holes in the longitudinal direction, and the width overlaps with neighboring corrugated steel sheets on both sides in the width direction. Corrugated steel sheet having a reinforcing bolt fastening hole, characterized in that the plurality of width direction connection bolt fastening holes are formed to be spaced apart from each other at regular third intervals in the direction connection portion, and the second interval exceeds twice the first interval. present

Here, the second interval is preferably formed by an integer multiple of 1/2 of the third interval.

In addition, three longitudinal connecting bolt fastening holes and the three longitudinal connecting bolt fastening holes are formed spaced apart by a first interval even between the peaks and valleys of the longitudinal connecting part overlapping the neighboring corrugated steel sheets on both sides in the longitudinal direction. A reinforcing bolt fastening hole spaced apart by a second interval from the centrally located hole may be formed.

For example, the reinforcing bolt fastening hole is formed to be spaced apart in the inner direction of the corrugated steel plate in the longitudinal connection part located on one side of the corrugated steel plate, and the longitudinal connection part located at the other side of the corrugated steel plate is formed to be spaced apart from the corrugated steel plate in the outer direction. can

As described above, in the corrugated steel sheet having a reinforcing bolt fastening hole according to an embodiment of the present invention, three longitudinal connecting bolt fastening holes are formed at regular intervals in the longitudinal connection portion of the corrugated steel sheet, and the longitudinal connection portion is reinforced so that the bolt fastening hole has a separation distance greater than the first distance, which is the separation distance of the bolt fastening hole for the longitudinal connection, from any one of the bolt fastening holes for the longitudinal connection located at both ends. formed apart.

Therefore, in the corrugated steel sheet having a reinforcing bolt fastening hole according to an embodiment of the present invention, the longitudinal connecting bolts are fastened to three longitudinal connecting bolt fastening holes in the overlapping longitudinal connection parts of the neighboring corrugated steel sheets to be adjacent in the longitudinal direction. Reinforcing formed by connecting the corrugated steel sheets to each other, and spaced apart to have a larger separation distance than the first interval, which is the separation distance of the bolt fastening hole for the longitudinal connection from the bolt fastening hole for the longitudinal connection located at the end of the longitudinal connection part By fastening the reinforcing connecting bolt to the bolt fastening hole, there is an effect that can improve the fastening force and rigidity of the longitudinal connecting portion of the corrugated steel sheet adjacent to each other.

In this way, the corrugated steel sheet having a reinforcing bolt fastening hole according to an embodiment of the present invention is characterized by the fastening force of the longitudinal connecting portions of the adjacent corrugated steel sheets without installing a separate reinforcing member to prevent vertical deflection of the corrugated steel sheet structure. It has the effect of minimizing the change in the cross-sectional shape of the corrugated steel plate structure by minimizing the vertical deflection of the corrugated steel plate structure by further improving the resistance to bending deformation at the longitudinal joint of the corrugated steel plate structure by greatly improving the rigidity.

In addition, in one embodiment of the present invention, the second interval is formed as an integer multiple of 1/2 of the third interval. Since the bolt fastening holes for the width direction connection are already set to be formed to be spaced apart at a regular third interval, in order to form the reinforcing bolt fastening holes to fit the second interval in the corrugated steel sheet forming apparatus, without significantly changing the setting of the device Since the reinforcing bolt fastening hole can be additionally formed at the correct position, it is also possible to prevent the corrugated steel sheet forming process from being complicated.

Ultimately, the corrugated steel sheet having a reinforcing bolt fastening hole according to an embodiment of the present invention significantly improves the fastening force and rigidity of the longitudinal joint by simply connecting the neighboring corrugated steel sheets without the construction of a separate additional reinforcing member. It has the effect of further improving the reliability of the corrugated steel sheet structure by improving the construction convenience as well as the structural stability by minimizing the vertical deflection.

Other effects of the present invention will be clearly understood and understood by experts or researchers in the art through the specific details described below, or during the course of carrying out the present invention.

1 is a perspective view of a corrugated steel sheet having a reinforcing bolt fastening hole according to an embodiment of the present invention;
2 is a view for explaining a process of connecting adjacent corrugated steel sheets
3 is a perspective view of a corrugated steel sheet having a reinforcing bolt fastening hole according to another embodiment of the present invention;
Figure 4 is a view showing a hydraulic universal material testing machine
5 is a view showing a jig applied to the testing machine
6 to 8 are views showing corrugated steel sheet test bodies according to Comparative Examples 1 to 3;
9 to 10 are views showing the corrugated steel sheet test body according to Examples 1 and 2;
11 is a load displacement graph of Comparative Examples 1 to 3 and Examples 1 and 2;
12 to 14 are views showing corrugated steel sheet test bodies according to Comparative Examples 4 to 6;
15 is a view showing a corrugated steel sheet test body according to Example 3
16 is a load displacement graph of Comparative Examples 4 to 6 and Example 3

Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, but one or more other features or It should be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

With reference to the drawings below, preferred embodiments of the present invention will be described in more detail.

1 is a perspective view of a corrugated steel sheet having a reinforcing bolt fastening hole according to an embodiment of the present invention, FIG. 2 is a view for explaining a process of connecting adjacent corrugated steel sheets to each other, and FIG. 3 is another embodiment of the present invention It is a perspective view of a corrugated steel sheet having a reinforcing bolt fastening hole according to an example.

1 to 3, the corrugated steel sheet 100 having a reinforcing bolt fastening hole according to an embodiment of the present invention is a corrugated steel sheet body part 110, a width direction connection part 120, and bolts for a width direction connection. It may include a hole 130 , a longitudinal connection part 140 , a bolt fastening hole 150 for longitudinal connection, and a reinforcing bolt fastening hole 160 .

The corrugated steel sheet body part 110 may have peaks (a) and valleys (b) alternately formed along the width direction, and may be bent to have a constant curvature in the longitudinal direction.

The width direction connection part 120 may be provided on both sides of the corrugated steel sheet body part 110 in the width direction, and the width direction connection part 120 is another corrugated steel plate body part 110 that is connected to each other in the width direction. may overlap with the width direction connection part 120 of the .

A plurality of bolt fastening holes 130 for the width direction connection are spaced apart from the width direction connection part 120 along the length direction of the corrugated steel plate body part 110 at a predetermined third interval S, and are formed in the width direction connection bolt By fastening 131, the width direction connecting portions 120 adjacent to each other in the width direction overlap each other so as to connect the corrugated steel plate body portions 110 adjacent to each other in the width direction.

For example, in the width direction connection bolt fastening hole 130, both ends of the corrugated steel sheet body 110 in the width direction are formed as ridges (a) as shown in the drawings, so that the width direction connection portion 120 is corrugated. When provided in the peaks (a) located at both ends of the steel plate body part 110 in the width direction, the corrugated steel plate along the center line of the peaks (a) of the corrugated steel plate body part 110 formed in the width direction connecting part 120 . It may be formed to be spaced apart from each other at a constant third interval S in the longitudinal direction of the main body 110 .

The longitudinal connection portion 140 may be provided on both sides of the longitudinal direction of the corrugated steel plate body part 110, and the longitudinal connection part 140 is adjacent to each other connected to each other in the longitudinal direction of the corrugated steel plate body part 110. It may overlap with the longitudinal connection part 140 of the other corrugated steel plate body part 110 .

The longitudinal connection bolt fastening holes 150 are formed to be spaced apart from each other at a predetermined first interval D1 in the longitudinal direction connection part 140 along the longitudinal direction of the corrugated steel plate body part 110, so that the longitudinal connection bolts are spaced apart from each other. By fastening 151, the longitudinal connection parts 150 adjacent to each other in the longitudinal direction overlap each other so that the corrugated steel plate body parts 110 adjacent in the longitudinal direction can be connected to each other.

For example, three corrugated steel plate fastening holes 150 for the longitudinal connection are formed along the center line of the ridges (a) and valleys (b) of the corrugated steel plate body part 110 located in the longitudinal connection part 140 . The body portion 110 may be formed to be spaced apart from each other at a constant first interval D1 in the longitudinal direction.

The reinforcing bolt fastening hole 160 is formed to be spaced apart from the center of the two longitudinal connecting bolt fastening holes in the longitudinal direction from the longitudinal connection part by a second interval D2, the second interval D2. may be formed to exceed twice the first interval D1. That is, the reinforcing bolt fastening hole 160 is a bolt fastening hole for longitudinal connection ( 150) may be formed to be spaced apart along the longitudinal direction of the corrugated steel plate body part 110 to the longitudinal connection part 140 to have a larger spacing than the first spacing D1, which is the spacing distance, and the reinforcement bolts By fastening the reinforcing connection bolt 161 to the fastening hole 160 , the rigidity of the longitudinal connection part 140 of the corrugated steel plate body part 110 is increased to increase resistance to bending deformation.

Forming the second gap (D2) to exceed twice the first gap (D1) as described above means forming the overlapping portion of the longitudinal connecting portion of the corrugated steel sheet relatively long compared to the prior art, It is analyzed that the resistance to bending deformation increases because the overlapping portion where the steel plates are overlapped and fixed becomes relatively large in cross-section, and the overlapping portion with increased cross-section stiffness becomes one with the reinforcing bolt and becomes relatively long as a result. do.

As a preferred embodiment, the reinforcing bolt fastening hole 160 is a bolt fastening hole for width direction connection from the bolt fastening hole 150 for longitudinal connection located in the middle among the three bolt fastening holes 150 for longitudinal connection. 130) It is preferable to be spaced apart by the second interval D2 that is an integer multiple of 1/2 of the third interval S, which is the separation interval.

In order to form the second gap (D2) to exceed twice the first gap (D1), the corrugated steel sheet forming apparatus is formed to form the reinforcing bolt fastening holes 160 at positions spaced apart by the second gap (D2). It should be set, but in the width direction connection part where the corrugated steel sheet forming apparatus overlaps the neighboring corrugated steel sheets on both sides in the width direction, a plurality of bolt fastening holes for the width direction connection are already set to be formed spaced apart by a predetermined third interval (S). Therefore, when the second interval (D2) is an integer multiple of 1/2 of the third interval (S), the setting of the device is greatly changed in order to form the reinforcing bolt fastening hole to match the second interval in the corrugated steel sheet forming apparatus Since the reinforcing bolt fastening hole can be additionally formed at the correct position without not doing so, it is possible to prevent the corrugated steel sheet forming operation from being complicated by additionally forming the reinforcing bolt fastening hole.

Most preferably, the reinforcing bolt fastening hole 160 is a bolt fastening hole for width direction connection from the bolt fastening hole 150 for longitudinal connection located in the middle among the three bolt fastening holes 150 for longitudinal connection. 130) may be formed to be spaced apart by a second gap (D2) spaced apart by 1/2 that is a third gap (S) that is a spaced gap. It is also possible to set the second interval D2 to S, 3S/2, or 2S by making the second interval D2 an integer multiple of 1/2 of the third interval S. However, if the second interval D2 is increased, the length direction Consumption of steel for forming the corrugated steel sheet increases as the overlapping portion of the connecting portion becomes longer, while the effect of increasing the rigidity is to form the second interval D2 to S/2, which is 1/2 of the third interval S. Since it is not large compared to it, it is most preferable to form the second interval D2 spaced apart by 1/2 of the third interval S.

On the other hand, the reinforcing bolt fastening hole 160 is in the longitudinal direction connecting portion 140 located on one side of the corrugated steel sheet 100 in the middle of the three longitudinal connecting bolt fastening holes 150 in the inner direction of the corrugated steel sheet 100 . The corrugated steel plate 100 is formed to be spaced apart by a second interval D2 from the bolt fastening hole 150 for longitudinal connection located at It may be formed to be spaced apart from the bolt fastening hole 150 for longitudinal connection in the middle among the bolt fastening holes 150 for longitudinal connection by a second interval D2.

On the other hand, it is obvious to a person skilled in the art that the bolt fastening hole for longitudinal connection and the reinforcing bolt fastening hole located at the end of the longitudinal connection part exhibit not only the longitudinal connection but also the function of the width direction connection.

In addition, as shown in FIG. 3 , also in the middle between the peaks (a) and the valleys (B) of the longitudinal connection part 140 overlapping with the neighboring corrugated steel plates 100 on both sides in the longitudinal direction is spaced apart by a first interval (D1). A reinforcing bolt fastening hole 160 spaced apart from the center of the three longitudinal connecting bolt fastening holes 150 and the three longitudinal connecting bolt fastening holes 150 by a second interval D2. This may be further formed.

Again, a reinforcing structure of a corrugated steel sheet structure using a corrugated steel sheet having a reinforcing bolt fastening hole will be described with reference to FIGS. 1 to 3 .

1 to 3, the reinforcing structure of the corrugated steel sheet structure using the corrugated steel sheet having a reinforcing bolt fastening hole according to an embodiment of the present invention is that of the corrugated steel sheet 100 adjacent to each other in the longitudinal direction of the corrugated steel sheet. The longitudinal connecting bolts 151 are fastened to the three longitudinal connecting bolt fastening holes 150 provided in the overlapping longitudinal connecting portions 140 to connect the corrugated steel sheets 100 adjacent to each other in the longitudinal direction.

In addition, a plurality of width direction connection bolt fastening holes 130 are provided in the width direction connection part 120 overlapping each other of the corrugated steel sheet (not shown) adjacent in the width direction of the corrugated steel sheet 100, the width direction The corrugated steel sheets adjacent to each other in the width direction may be connected to each other by fastening the connecting bolts 131 in the width direction to the connection bolt fastening hole 130 .

On the other hand, the length of any one of the bolt fastening holes 150 for longitudinal connection located at both ends of the three longitudinal connecting bolt fastening holes 150 provided in the longitudinal connecting portion 140 of the corrugated steel sheet 100 Reinforcing bolts formed to be spaced apart from the bolt fastening hole 150 for connection in the longitudinal direction so as to have a larger distance than the first distance D1 that is the distance between the bolt fastening hole 150 for longitudinal connection. By fastening the reinforcing connection bolts 161 to the fastening holes 146 , adjacent corrugated steel sheets 100 in the longitudinal direction can be connected to each other.

As described above, in the reinforcing structure of the corrugated steel sheet structure using the corrugated steel sheet having a reinforcing bolt fastening hole according to an embodiment of the present invention, a pair of corrugated steel sheets 100 adjacent to each other in the longitudinal direction of the corrugated steel sheet 100 overlap each other. At the same time as connecting the corrugated steel sheets 100 adjacent in the longitudinal direction to each other by fastening the longitudinal connecting bolts 151 to the three longitudinal connecting bolt fastening holes 150 formed in the longitudinal connecting portion 140, 3 A first interval (D1) that is a separation distance of the bolt fastening hole 150 for longitudinal connection from the bolt fastening hole 150 for longitudinal connection located at one or the other end of the bolt fastening holes 150 for longitudinal connection By fastening the reinforcing connection bolt 161 to the reinforcing bolt fastening hole 160 formed in the longitudinal connecting portion 140 to have a larger separation distance, and connecting the adjacent corrugated steel sheets 100 to each other in the longitudinal direction, the longitudinal direction By increasing the rigidity of the longitudinal connection part 140 of the corrugated steel sheet 100 adjacent to each other, the resistance to bending deformation of the longitudinal connection part 140 can be improved.

For example, the reinforcing bolt fastening hole 160 is a bolt fastening hole 130 for width direction connection from the longitudinal connecting bolt fastening hole 150 located in the middle among the three longitudinal connecting bolt fastening holes 150 . ) It is preferable to be spaced apart by a second interval (D2) that is an integer multiple of 1/2 of the third interval (S) that is a separation interval.

Most preferably, the reinforcing bolt fastening hole 160 is the reinforcing bolt fastening hole 160 is a longitudinal connecting bolt fastening hole 150 located in the middle among the three longitudinal connecting bolt fastening holes 150 . The width direction connection bolt fastening hole 130 may be formed to be spaced apart by 1/2 of the third gap (S) spaced apart from each other.

Hereinafter, a bending comparison test performed while varying the number of bolt fastening holes 160 for longitudinal connection of the longitudinal connection part 140 will be described in detail with reference to FIGS. 4 to 16 .

4 is a view showing a hydraulic universal material testing machine, FIG. 5 is a view showing a jig applied to the testing machine, and FIGS. 6 to 8 are views showing a corrugated steel sheet test body according to Comparative Examples 1 to 3 and , FIGS. 9 to 10 are views showing corrugated steel sheet test specimens according to Examples 1 and 2, FIG. 11 is a load displacement graph of Comparative Examples 1 to 3 and Examples 1 and 2, and FIGS. 12 to 14 are comparison views It is a view showing the corrugated steel sheet test body according to Examples 4 to 6, FIG. 15 is a view showing the corrugated steel sheet test body according to Example 3, and FIG. 16 is a load displacement graph of Comparative Examples 4 to 6 and Example 3 to be.

For the bending test, a corrugated steel sheet made of general structural steel was used, and a 3,000kN hydraulic universal material testing machine 200 capable of performing a four-point bending test was used as the experimental equipment as shown in FIG. 3 .

On the other hand, as shown in FIG. 4 , jigs 230 and 240 having the same peak (a) and valley (b) corrugations as the corrugated steel plate are installed in the pressing part 210 and the branch part 220 to install the corrugated steel plate. and the vertical displacement of the corrugated steel sheet was measured by installing a displacement gauge 250 at the center of the span and at the lower part of the loading position in order to grasp the bending deformation.

1. Bending test on corrugated corrugated steel sheet

The corrugated corrugated steel sheet used in the bending test was manufactured to have a thickness of 7.01mm, a width of 837mm, and a length of 5,000mm using a steel sheet made of SS315.

Comparative Example 1: Corrugated corrugated steel sheet without a connection part

As shown in FIG. 5, a corrugated corrugated steel sheet 100 for the test subject to a thickness (T) of 7.01 mm, a width (W) of 837 mm, and a length (L) of 5,000 mm was produced as a corrugated steel sheet 100 without a connection part as shown in FIG. .

Comparative Example 2: Corrugated corrugated steel plate with three bolts for longitudinal connection

As shown in FIG. 6, the thickness (T) of 7.01mm, width (W) of 837mm, and the lengthwise connection part of the corrugated corrugated steel plate 100 are three lengthwise connection bolt fastening holes 150 equal to the first The length (L) formed at the interval (D1: 76mm) was manufactured to be 5,000mm in length (L) for the test subject, and the length (L3) of the longitudinal connection part 140 was 228mm, and the three lengthwise connection bolts were fastened. A corrugated steel sheet test body was manufactured by fastening a 22 mm diameter lengthwise connection bolt to the hole 150 .

Comparative Example 3: Corrugated corrugated steel plate with 4 bolts for longitudinal connection

As shown in FIG. 7, the thickness (T) of 7.01mm, the width (W) of 837mm, and the lengthwise connection part 140 of the corrugated steel plate 100 of the corrugated form are four lengthwise connection bolt fastening holes 150 at equal intervals. The length (L) formed by the first interval (D1: 76mm) was manufactured to be 5,000mm, and the length (L3) of the longitudinal connection part 140 was 304mm, and the four A corrugated steel sheet test body was manufactured by fastening a lengthwise connection bolt with a diameter of 22 mm to the longitudinal connection bolt fastening hole 150 .

Example 1: Coarse type provided with reinforcing bolt fastening holes spaced 0.5S (S: spacing of bolt fastening holes for width direction) from three bolt fastening holes for longitudinal connection and longitudinal connecting bolt fastening holes located in the center Corrugated steel sheet

As shown in FIG. 8 , the thickness (T) of 7.01mm, the width (W) of 837mm, and the lengthwise connection part 140 of the corrugated steel plate 100 of the corrugated corrugation are three lengthwise connection bolt fastening holes 150 at equal intervals. A corrugated corrugated steel sheet 100 for the test subject was manufactured so that the length (L) formed at the first interval (D1: 76mm) was 5,000mm, and the length (L3) of the longitudinal connection part 140 was 355mm, and located in the center A reinforcing bolt fastening hole 160 is additionally formed at a position (second interval: D2) spaced 0.5S (203 mm) from the longitudinal connection bolt fastening hole 150, and the longitudinal connecting bolt fastening hole 150 ) and the reinforcing bolt fastening hole 160, a corrugated steel sheet test body was manufactured by fastening a 22mm diameter lengthwise connection bolt and a reinforcing connection bolt.

Example 2: Corrugated corrugation provided with reinforcing bolt fastening holes spaced 1S (S: spacing of bolt fastening holes for width direction) from three bolt fastening holes for longitudinal connection and longitudinal connecting bolt fastening holes located in the center grater

As shown in FIG. 9 , the thickness of 7.01mm, width of 837mm, and the bolt fastening holes 150 for connecting in the longitudinal direction to the longitudinal connecting portion 140 are equal to the first interval (D1) of the corrugated steel sheet 100 of the corrugation 100 as shown in FIG. 9 . : 76mm), the length (L) of the corrugated steel sheet 100 for the experiment was manufactured to be 5,000mm, the length (L3) of the longitudinal connection part 140 is 355mm, and the longitudinal connection bolt located in the center part is fastened A reinforcing bolt fastening hole 160 is additionally formed at a position spaced 1S (406 mm) from the hole 150 (second interval: D2), and the longitudinal connection bolt fastening hole 150 and the reinforcing bolt fastening hole ( 160), a corrugated steel sheet test body was manufactured by fastening a 22mm diameter lengthwise connection bolt and a reinforcement connection bolt.

The amount of deflection and displacement for each load of the corrugated corrugated steel sheet structures according to Comparative Examples 1 to 3 and Examples 1 and 2 as described above were measured, and the results are shown in Table 1 below.

Comparison table of deflection and displacement by load of corrugated corrugated steel plate structure weight
(kN) Deflection displacement (mm) no connection
(Comparative Example 1) 3 volts
(Comparative Example 2) 4 volts
(Comparative Example 3) 3V+0.5S
(Example 1) 3V+1S
(Example 2) 50 25.9 29.23 27 25.79 26.24 100 53.23 62.99 53.99 51.23 50.49 150 92.74 121.48 93.74 85.00 80.49 200 182.59 233.99 177.23 143.5 129.73 maximum load 193 kN 208 kN 211 kN 219kN 229 kN

As shown in Table 1 and Fig. 10, which is a load displacement graph of Comparative Examples 1 to 2, the corrugated corrugated steel sheet test specimen provided with three longitudinal connection bolt fastening holes 150 according to Comparative Example 2 has no connection part. It can be seen that when an initial load of 50 kN is applied, more than about 10% of deflection displacement occurs, and when a load of 150 kN or more is applied, more than about 30% of deflection displacement occurs than that of the corrugated steel sheet specimen according to Comparative Example 1. can

In addition, the amount of deflection displacement of the corrugated corrugated steel sheet test specimen provided with four longitudinal connection bolt fastening holes 150 according to Comparative Example 3 is equal to or less than 150 kN with the corrugated steel sheet 100 according to Comparative Example 1 without a connection part. Under the condition, similar values are shown, and it can be seen that the amount of deflection displacement is reduced by about 3% at 200 kN.

On the other hand, the amount of deflection displacement of the corrugated steel sheet test specimen provided with the three longitudinal connection bolt fastening holes 150 and the reinforcing bolt fastening holes 160 spaced apart from each other by 0.5S (second gap: D2) according to Example 1 is 100kN. It can be seen that the reduction was 4% compared to the corrugated steel sheet 100 according to Comparative Example 1 without a connection part, decreased by 8% at 150kN, and decreased by about 20% at 200kN.

In addition, the amount of deflection displacement of the corrugated corrugated steel plate structure of the rib cage provided with the three longitudinal connection bolt fastening holes 150 and the reinforcing bolt fastening holes 160 spaced apart by 1S spacing (second gap: D2) according to Example 2 is carried out Although it seems that the amount of deflection displacement is improved compared to the corrugated steel sheet structure of Example 1, it can be seen that the degree is not large. On the other hand, in the case of Example 2, since the length of the joint of the corrugated steel sheet becomes longer, a lot of steel is required, so this should be considered.

Therefore, there is no connection part even with the corrugated steel sheet specimen having three longitudinal connection bolt fastening holes 150 according to Example 1 and the reinforcing bolt fastening holes 160 spaced apart at 0.5S intervals (second gap: D2). Since the amount of deflection displacement is reduced than that of the corrugated steel sheet 100 according to Comparative Example 1, the reinforcement bolts spaced apart from the three longitudinal connection bolts 150 and 0.5S intervals (second interval: D2) according to Example 1 It is determined that the corrugated corrugated steel sheet specimen provided with the fastening hole 160 is an optimal combination for improving the bending performance.

2. Bending experiment on super corrugated steel sheet

The super corrugated steel sheet used in the bending test was manufactured to have a thickness of 9mm, a width of 1,076mm, and a length of 8,000mm using a steel sheet made of SS315.

Comparative Example 4: Super corrugated steel sheet without a connection part

As shown in FIG. 11, a super corrugated steel sheet 100 for the test subject was manufactured to have a thickness (T) of 9 mm, a width (W) of 1,076 mm, and a length (L) of 8,000 mm as a super corrugated steel sheet without a connection part as shown in FIG.

Comparative Example 5: Super corrugated steel sheet provided with 3 bolts for longitudinal connection

As shown in FIG. 12 , the thickness (T) of 9 mm, the width (W) of 1,076 mm, and the lengthwise connection part 140 of the super corrugated steel plate 100 are three lengthwise connection bolt fastening holes 150 at equal intervals. The super corrugated steel sheet 100 for the experiment was manufactured so that the length (L) formed at the first interval (D1: 76mm) was 8,000mm, and the length (L3) of the longitudinal connection part 140 was 238mm, and the three A corrugated steel sheet test body was manufactured by fastening a 22 mm diameter lengthwise connection bolt to the longitudinal connection bolt fastening hole 150 .

Comparative Example 6: Super corrugated steel sheet provided with bolt fastening holes for connecting in the longitudinal direction

As shown in FIG. 13 , the super corrugated steel sheet 100 has a thickness (T) of 9 mm, a width (W) of 1,076 mm, and four longitudinal connection bolt fastening holes 150 for the longitudinal connection part 140 at equal intervals. The super corrugated steel sheet 100 for the experiment was manufactured so that the length (L) formed at the first interval (D1: 76mm) was 8,000mm, and the length (L3) of the longitudinal connection part 140 was 344mm, and the four A corrugated steel sheet test body was manufactured by fastening a lengthwise connection bolt with a diameter of 22 mm to the longitudinal connection bolt fastening hole 150 .

Example 3: Super rib type with reinforcement bolt fastening holes spaced 0.5S (S: spacing of bolt fastening holes for width direction) from three bolt fastening holes for longitudinal connection and longitudinal connecting bolt fastening holes located in the center Corrugated steel sheet

As shown in FIG. 14 , the thickness (T) of 9 mm, width (W) of 1,076 mm, and the lengthwise connection part 140 of the super corrugated steel plate 100 are three lengthwise connection bolt fastening holes 150 at equal intervals. The super corrugated steel sheet 100 for the experiment was manufactured so that the length (L) formed at the first interval (D1: 76mm) was 8,000mm, and the length (L3) of the longitudinal connection part 140 was 365mm, and located in the center A reinforcing bolt fastening hole 160 is additionally formed at a position (second interval: D2) spaced 0.5S (203 mm) from the longitudinal connection bolt fastening hole 150, and the longitudinal connecting bolt fastening hole 150 ) and the reinforcing bolt fastening hole 160, a corrugated steel sheet test body was manufactured by fastening a 22mm diameter lengthwise connection bolt and a reinforcing connection bolt.

The amount of deflection and displacement for each load of the super-corrugated corrugated steel sheet test body according to Comparative Examples 4 to 3 as described above was measured, and the results are shown in Table 2 below.

Comparison table of deflection displacement by load of super corrugated steel plate structure weight
(kN) Deflection displacement (mm) no connection
(Comparative Example 4) 3 volts
(Comparative Example 5) 4 volts
(Comparative Example 6) 3V+0.5S
(Example 3) 50 15.58 19.97 17.08 14.99 100 35.35 55.63 58.82 37.07 150 58.72 100.47 88.58 58.55 200 82.59 144.41 120.84 80.33 250 109.86 184.16 157.59 107.80 300 139.62 225.11 194.95 141.27 350 172.68 282.23 247.58 182.24 400 221.51 375.41 329.27 234.29 maximum load 445 kN 398 kN 420 kN 452 kN

As shown in Table 2 and Fig. 15, which is a load displacement graph of Comparative Examples 4 to 6 and Example 3, the super corrugated steel sheet test body provided with three longitudinal connection bolt fastening holes 150 according to Comparative Example 5 has a connection part It can be seen that, when an initial load of 50 kN is applied, more than about 28% of deflection displacement occurs, and when a load of 100 kN or more is applied, more than about 60% of deflection displacement occurs. can

In addition, the amount of deflection displacement of the super corrugated steel sheet structure provided with the four longitudinal connection bolt fastening holes 150 according to Comparative Example 6 is 50 kN, which is an initial load than the super corrugated steel sheet 100 according to Comparative Example 4 without a connection part. When it acts, about 10% more deflection displacement is generated, and when a load of 100 kN or more is applied, about 40% or more of deflection displacement occurs.

On the other hand, the amount of deflection displacement of the super-corrugated corrugated steel sheet structure provided with the three longitudinal connection bolt fastening holes 150 and the reinforcing bolt fastening holes 160 spaced apart from each other by 0.5S (second gap: D2) according to Example 3 is It can be seen that the shape of the load displacement graph is almost similar to that of the super-corrugated steel sheet specimen according to Comparative Example 4 while maintaining the deflection shape of about ±5% of the deviation of the super-corrugated steel sheet test specimen according to Comparative Example 4 without a connection part.

And, since the load displacement graph of the super-corrugated corrugated steel sheet test body according to Example 3 shows a shape similar to the load displacement graph of the super-corrugated corrugated steel sheet test body without a connection part, the spacing of the reinforcing bolt fastening hole 160 (second interval) : Even if D2) is made larger than 0.5S, the effect is judged to be insignificant, so the three longitudinal connection bolt fastening holes 150 according to Example 3 and the reinforcing bolts spaced apart at 0.5S intervals (second interval: D2) are fastened The ultra-corrugated corrugated steel plate structure provided with the hole 160 is determined to be the optimal combination for improving the bending performance.

The corrugated steel sheet having a reinforcing bolt fastening hole according to an embodiment of the present invention has three longitudinal connection bolts in the overlapping longitudinal connection part 140 of the neighboring corrugated steel sheet 100, and the longitudinal connection bolts are connected to the bolt fastening holes 150 for the longitudinal direction. By fastening 151, the corrugated steel sheets 100 adjacent in the longitudinal direction are connected to each other, and the bolt fastening hole for longitudinal connection is from the longitudinal connecting bolt fastening hole 150 located at the end of the longitudinal connecting part 140. The corrugated steel sheet 100 adjacent to each other by fastening the connection bolts 161 for reinforcement to the reinforcement bolt fastening holes 160 that are spaced apart to have a larger separation distance than the first interval D1, which is the separation distance of 150. ) can improve the fastening force and rigidity of the longitudinal connection portion 140 .

As such, in the corrugated steel sheet having a reinforcing bolt fastening hole according to an embodiment of the present invention, the longitudinal connection part ( 140) greatly improves the resistance to bending deformation at the longitudinal joint 140 of the corrugated steel plate structure, thereby minimizing the vertical deflection of the corrugated steel plate structure, thereby reducing the change in the cross-sectional shape of the corrugated steel plate structure. to be minimized.

Although the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, those of ordinary skill in the art or those having ordinary knowledge in the art will have the spirit of the present invention described in the claims to be described later. And it will be understood that various modifications and variations of the present invention can be made without departing from the technical scope.

(110): corrugated steel plate body part (120): width direction connection part
(130): bolt fastening hole for width direction connection (140): length direction connection part
(150): bolt fastening hole for longitudinal connection (160): reinforcing bolt fastening hole
(D1): first interval (D2): second interval
(S): third interval

Claims (4)

In the longitudinal connection part overlapping the neighboring corrugated steel plates on both sides in the longitudinal direction, three longitudinal connection bolt fastening holes are formed at regular first intervals along the center line of the mountain and valley parts,
In the longitudinal connection portion, a reinforcing bolt fastening hole is formed to be spaced apart from the center of the three longitudinal connecting bolt fastening holes at a second interval in the longitudinal direction,
In the width direction connection portion overlapping with the neighboring corrugated steel sheets on both sides in the width direction, a plurality of bolt fastening holes for connection in the width direction are formed spaced apart at regular third intervals,
the second interval is greater than twice the first interval,
The reinforcing bolt fastening hole is formed to be spaced apart in the inner direction of the corrugated steel plate at the longitudinal connection portion located on one side of the corrugated steel sheet, and the longitudinal connection portion located on the other side of the corrugated steel sheet is formed to be spaced apart from the corrugated steel sheet in the outer direction. Corrugated steel sheet with reinforcing bolt fastening holes. The method of claim 1,
The second interval is a corrugated steel sheet having a reinforcing bolt fastening hole, characterized in that it is an integer multiple of 1/2 of the third interval. The method of claim 1,
Three longitudinal connecting bolt fastening holes and the three longitudinal connecting bolt fastening holes that are formed spaced apart by a first interval even in the middle of the peaks and valleys of the longitudinal connecting parts overlapping the neighboring corrugated steel sheets on both sides in the longitudinal direction Corrugated steel sheet having a reinforcing bolt fastening hole, characterized in that the reinforcing bolt fastening hole spaced apart from the hole located at a second interval is formed. delete

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