TW201033442A - Foundation steel member, method for driving foundation steel member into ground, and continuous wall using foundation steel member - Google Patents

Abstract

The present invention provides a foundation steel member having a steel sheet pile including a web, a pair of flanges provided at both ends of the web, and a pair of sections respectively provided at each end of the pair of flanges, and a first water jet pipe provided along a longitudinal direction only on an outside of the steel sheet pile.

Description

201033442 VI. OBJECTS OF THE INVENTION: FIELD OF THE INVENTION The present invention relates to a steel member for basic use and a steel member for basic use in a civil construction model which is suitable for a basic structure capable of supporting a structure in a vertical direction. The method and foundation are made of steel continuous wall. The present application claims priority based on Japanese Patent Application No. 2009-023655, which was filed on February 4, 2009 in Japan, and is hereby incorporated by reference. Background of the Invention In the field of civil engineering, steel sheet piles used as structural members for retaining walls, foundation structures, revetments of harbor rivers, banks, and even water retaining walls are provided with joint portions at both ends in the width direction. A plurality of steel sheet piles are placed toward the foundation to join the joint portions of the adjacent steel sheet piles to form a continuous wall. In particular, in recent years, a technique for improving the vertical support force of a steel sheet pile has been disclosed. For example, Patent Document 1 discloses a steel sheet pile shown below. The technique disclosed in the patent document, as shown in Fig. 13, is to join the closed steel material 1〇3 to the tip end portion of the steel sheet pile 1〇2, and to form the closed cross-section portion by the steel sheet pile 102 and the closed steel material 1〇3. Therefore, when the combined steel sheet pile 1G1 is placed on the foundation, the soil portion of the closed section is filled and the tip end portion of the combined steel sheet pile (8) is closed. Therefore, it is expected that a certain degree of vertical support (preemptive support) can be obtained. The larger the closed section is, the more the tip support can be increased. λ, the general steel plate _ ’ that does not have a closing member is placed underground, and the soil sand can be filled on the side (closed) of the pile (4) and the front end closure portion is formed in 201033442. The method of making steel sheet piles underground can be exemplified by the vibrating hammer method and the pressing method. The vibrating hammer method _ underground through the steel sheet pile, the vibration propagates through the steel grid to the ground, and the foundation is fluidized or sharpened to simplify the penetration of the steel sheet pile. The pressure manual method is to control the steel to be driven by the chuck of the human machine, and to apply the above-mentioned steel to the underground house by the static load applied to the machine. Regardless of the method used, when the steel sheet pile to be laid is long, or when the foundation contains hard soil and stones, it is necessary to improve the ease of installation. Therefore, a so-called water sprinkler that discharges high-pressure water from the mouth near the lower end of the steel sheet pile through piping can be used. However, as described above, if the water sprinkler is disposed at a portion where the tip end portion is to be formed, the tip end closing portion is easily hindered, and the tip end supporting force cannot be exerted. In addition, the steel sheet pile which is premised on the premise that the support structure is not supported in the vertical direction does not require the vertical support force obtained by forming the front end closure portion of the support layer, so that it may be before the end of the construction in the ground. Use a sprinkler. On the other hand, the steel sheet pile which is premised on the basic structure of the structure which supports the upper part of the vertical direction in the vertical direction by the continuous wall which consists of a steel sheet pile, and a support layer cannot be supported by a water-sprayer The apex closure is formed and vertical support is not available. [Patent Document] [Patent Document 1] JP-A-2008-248503, No. 201033442 I: SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION Accordingly, the present invention has been made in view of the above problems. In the case of providing a steel sheet pile which can be used for the underground spray when the sprayer is used in combination, the water sprayer is used to enhance the ease of installation, and the front end closure portion is surely formed.

The steel member, the basic steel member, and the basic steel continuous wall are used as the basis for the vertical support. Means for Solving the Problems In order to solve the above problems, the present invention employs the following method. (1) The first aspect of the present invention is characterized in that: a steel plate roll & a web portion, and a pair of flap portions connected to the both ends of the web portion are provided in the one One of the side end portions of the wing portion is butted against the weir portion; and, the water spray pipe is installed only along the outer side of the front patch pile on the outer side of the pile. (7) In the steel member for the base of the above (1), the (4) water pipe is also a distance from the center of the joint of the joint portion, W is an effective width of the first two sheet piles, and Η is an effective height of the steel sheet pile. And set the following conditions. Β<0.80: ‘W, 2 2 + Η2 The steel member for the base of the above (1) or (2) may further include a closing member having both end portions of the inner side of the 4 slab pile. (4) The steel member for the base of the above (3) may further include a second water spout pipe provided in the longitudinal direction of the closing member only on the outer side of the closing Q member in 201033442. In the steel member for the base of the above (4), the second water spout pipe is also a distance from the center of the joint of the joint portion of the joint portion, and w is the money for the steel sheet pile. Degree, which is the effective height of the front off pile, and is set to meet the following conditions. Β<〇.8〇χ

+ Η 2 (6) The steel member for the base of the above (1) or (2) may further include a control device capable of controlling the discharge output of the first water spray pipe. (7) In the steel member for the base of the above (6), the control device may be controlled before the lower end of the base steel member that has been pressed into the ground before reaching the support layer from 1 to 3 m of the support layer. The water spray pressure of the water sprinkler is lowered to 5 MPa or less. (8) In the steel member for the base of the above (1) or (2), the lower end portion of the first water spray camp may further be provided with a nozzle capable of discharging the liquid vertically downward. (9) The second aspect of the present invention is a method for laying a steel member for a base. The base steel member of the above (1) or (2) can be placed underground. The driving method comprises the steps of: spraying the water from the nozzle pipe and embedding the aforementioned steel member for the base; and reaching the support at the lower end of the base steel member from 1 to 3 m of the underground support layer. Before the layer is stopped, the aforementioned mouth water operation is stopped. (10) The third aspect of the present invention is a splicing of a basic steel member, and the base steel member of the above (1) or (2) can be laid underground.本打 201033442

H water pipe spray pressure is reduced to 5Mpa|:;T

The water discharge pressure of the water spray pipe is maintained at 2.5 MP and further comprises a steel continuous wall of the fourth aspect of the present invention from a above 5 MPa, and at least two foundations of the above (1) or (7). The steel members are connected by the zen portions of the base members, and the lower ends of the at least two base steel members are passed through to the support layer. (13) A fifth aspect of the present invention is a steel continuous wall, wherein at least two of the basic closing members of the above (1) or (7) are connected to each other by at least two of the joint portions. The base steel member includes a first base steel member through which the lower end penetrates to the intermediate layer, and a second base steel member through which the lower end passes through the support layer. Advantageous Effects of Invention According to the configuration of the present invention disclosed in the above (1), the first water spout is placed on the outside of the steel sheet pile. Therefore, the formation of the apex closing portion is not hindered, and the vertical supporting force can be surely exerted. According to the constitution of the present invention disclosed in the above (2), the i-th spray pipe is installed within a predetermined distance B. Therefore, the sand filled with the joint portion can be specifically discharged by the discharge of the first water spout pipe. Therefore, it can play a higher vertical support force 7 201033442 and ease of installation. According to the constitution of the present invention disclosed in the above paragraph, the cross-section closing portion surrounded by the cross section of the steel sheet pile and the cross section of the closing member can be formed, so that the vertical supporting force can be more reliably exhibited. According to the constitution of the present invention disclosed in the above (4), since the second water spout pipe is attached to the outside of the closing member, it is possible to exhibit a high vertical support force and ease of installation. According to the constitution of the present invention disclosed in the above (5), it is possible to achieve higher ease of installation. According to the constitution of the present invention disclosed in the above (6) to (8), it is possible to exhibit a high vertical support force and ease of installation. According to the constitution of the present invention disclosed in the above (9) to (10), when the steel member for the base is worn in the ground, the lower end of the steel member which has been laid to the underground is 1 to 3 m from the lower end of the support layer. Stop the sprinkler or reduce the water spray pressure to below 5 MPa before reaching the support layer. Thereby, it is possible to prevent the discharge of the water passing through the water spout from obstructing the support layer. Next, when the base steel member is buried in the unimpeded support layer, the vertical support force can be exerted when the basic structure of the structure is supported in the straight direction (10) (4). According to the configuration of the present invention disclosed in the above (11), the vertical support force can be more reliably exhibited than the above (1) configuration. According to the configuration of the present invention disclosed in the above (12), since the base steel member having the above configuration (1) to (2) is connected, a continuous wall having a high vertical supporting force can be obtained. According to the configuration of the present invention disclosed in the above (13), 201033442 can be easily obtained at a lower cost than the case where only the steel member having the basic structure (1) to (2) is formed as a continuous wall. High vertical support. BRIEF DESCRIPTION OF THE DRAWINGS & Figure 1A is a cross-sectional view of a steel member for basic use according to an i-th embodiment of the present invention. Fig. 1B is a cross-sectional view showing a closed cross-sectional portion formed by the steel sheet coil and the imaginary line L on the steel member for basic use. Fig. 2 is a perspective view of the above-described basic steel member. Fig. 3 is a cross-sectional view showing an example in which the installation position of the water spout pipe has been changed. Fig. 4A is a cross-sectional view showing a mounting example of four water sprinkler pipes. Fig. 4B is a cross-sectional view showing another mounting example of four water spout pipes. Fig. 5A shows the structure in which the water spout pipe is installed within a distance B from the center of the joint of the joint portion. Fig. 5B is a view showing the distance B on the steel sheet pile 1 of the cross-section u-shaped. Fig. 6A is a view showing the structure of the press machine used when the steel member for the base is pressed by the press-fitting method. Fig. 6B is a view of the chuck 45 of the aforementioned press machine viewed from above. Fig. 7A is a perspective view showing a steel member for a base according to a second embodiment of the present invention. Fig. 7B is a plan view showing a closed cross-sectional portion formed by the steel sheet pile and the closing member on the steel member for basic use. Fig. 8A is a cross-sectional view showing a modified example of the steel member for base of the second embodiment, and is a cross-sectional view showing a steel member for use as a base member using a steel plate as a closing member. Fig. 8B is a cross-sectional view showing a closed cross-sectional portion formed by the steel sheet pile and the closed a member on the steel member for basic use. 9 201033442 Fig. 9A is a cross-sectional view showing a modification of the steel member for a base according to the second embodiment, and is a sectional view showing a steel member for use as a steel sheet pile and a closing member using a cross-section hat-shaped steel sheet pile. . Fig. 9B is a cross-sectional view showing a modification of the steel member for a base according to the second embodiment, and is a structural steel member for use as a steel sheet pile using a cross-section hat-shaped steel sheet pile as a closing member. Sectional view. Fig. 10A is a view showing the first step of the method of laying the steel member for the base of the present invention. Fig. 10B is a diagram showing the second step of the above-described setting method. Fig. 10C is a view showing the third step of the above-described setting method. Fig. 10D is a diagram showing the steps 4 of the foregoing setting method. Fig. 11A is a view showing the steps 1' of the other method of laying the steel member for the base of the present invention. Fig. 11B is a view showing the step 2' of the above-described setting method. Fig. 11C is a view showing the step 3' of the above-described setting method. Fig. 11D is a view showing the step 4' of the above-described setting method. Fig. 12 is a view showing a specific example in which the discharge of water by the water spout pipe is stopped or the discharge is weakened. Figure 13 is a diagram illustrating a conventional technique. I: Embodiment 3 Mode for Carrying Out the Invention The inventors of the present invention provide a basic steel member which is applicable to a basic structure capable of supporting a structure in a vertical direction in a civil engineering category and which has high vertical support force and ease of installation. In-depth study has been conducted on the construction of the support layer without the impediment of the sprinkler. As a result, it has been found that the spray pipe is attached to the outer side of the steel sheet pile, and the formation of the front end closure portion is not hindered, and the vertical support force can be surely exerted, and the water spray pipe is attached to the above-mentioned connection defined by the following formula (1). The distance between the position of the embossing center of the crotch and the position of the embossing machine is not to hinder the gripping mechanism of the press machine, which adopts the vibrating hammer method and the pressing method, and does not cause the soil sand to be stuffed in the joint. Department, but can be excavated. In addition, the position of the fitting center is the intermediate position of the fitting portion in the cross-sectional view showing the state in which the joint portions of the adjacent steel sheet piles are fitted to each other. [Equation 1] V-tree + H2 (1) Here, W: the effective width of the steel sheet pile, and H: the effective height of the steel sheet pile. Moreover, in order to avoid obstructing the support layer by the spray of the water sprayer, stopping the spray of the water sprayer before the lower end of the steel sheet pile Q reaches the support layer is the most effective method, but instead, the steel plate is hit against the support layer. The ease of design is reduced. Therefore, it is also conceivable to adopt the corresponding vertical support force, and after the steel sheet reaches the support layer and is placed in the support layer to a certain extent, the sprinkler is stopped, or the sprinkler is not completely stopped. Depressurization is used to suppress the support layer from being impeded and to ensure ease of installation. If the sprinkler is suspended during the installation, the soil sand will flow into the nozzle at the lower end of the mouthpiece, and the ease of laying the steel sheet pile will be greatly reduced. At this time, even if the spout is to be ejected by the sprinkler, it is actually possible to increase the water discharge pressure due to the inflow of the soil sand in the nozzle 11 201033442. As a result, it is impossible to make it easy. However, the water sprayer can be stopped, and only the decompression is performed, and the soil sand is prevented from flowing into the water spray nozzle, and the water is reduced. Generally, the water sprayer is constructed under a pressure of about 1 GMPa or more, but the inventor of the present invention found that After the lower end of the steel sheet pile reaches the support layer, the spray force is reduced (four), and the material can be inhibited from the support layer by the sprayer. That is, at the apex of the steel sheet pile, the sturdy front seal _ is used to ensure vertical support. Moreover, the inventors have also found that if the pressure of the sprinkler is on the 2nd, the soil sand can be prevented from flowing into the nozzle of the sprinkler. [First Embodiment] The following is a description of the basic steel member used for the basic structure of the support structure in the vertical direction of the civil engineering building 4, the method for laying the steel member for the base, and the continuous steel wall for the basic reference. The drawings are described in detail to give a preferred embodiment of the invention. In the figure, a represents the longitudinal direction of the base member _ member (the direction in which the base member is buried), the width direction of the steel member, and e represents the thickness direction of the steel member for the base. Further, in the present invention, as shown in the figure, the cut-off of the steel member for the base: the concave complement (the valley side) is referred to as the inner side, and the cross-sectional convex portion side (the mountain is referred to as the outer side. FIG. 1A is a third embodiment of the present invention) The basic steel structure is shown in Fig. 2, and the perspective view is shown in Fig. 2. The basic steel member 1 includes a steel sheet pile 1〇 and a water spray pipe 18. The 钢板 钢板 steel sheet pile 10 is integrally provided on both sides of the web In the figure, the inner side inclined wing portion 12 is provided with the joint portion 14 from the front end of the wing plate and the front end. The upper and lower joint portions 14 of the upper 12 201033442, one of the joint portions _ the other side joint portions 14 are mutually formed The left and right lines are symmetrical and are designed to have the shape of the upper opening in the same view. The joint portion 14 has a shape that can be fitted to the other base member _ members and the other joint portions 14 with each other. I4 actually includes a portion which is formed by a shape which is symmetrical with respect to the left and right lines, and further includes a portion which extends in a direction slightly perpendicular to the web portion 11. The water spout pipe 18 is mounted along the longitudinal direction of the steel sheet pile. The first end material a is provided with a water spray nozzle 19. Here, the steel shown in the first one is used. The mountain side of the grid 1' is defined as the outer side, and the valley side is defined as the inner side. That is, the water spray pipe 18 is attached to the outer side of the steel sheet pile 10. In this example, the water spray correction is attached to the boundary of the flap joint portion In the vicinity of the position, the inner diameter of the pipe of the water spout pipe 18 is set to about 5 cm, but is not limited thereto. The second end portion 18b of the water spray *s·18 is connected to a control device and a water supply pump (not shown). The high-pressure water sent from the water pump is sent to the nozzle 19 through the water spray pipe 18, and is sprayed by the nozzle 19. By spraying the high-pressure water with the nozzle 19, it is possible to dig directly under the steel sheet pile 10. The foundation is scented and buried underground with a small force. Fig. 1B is a cross-sectional view showing the state in which the lower end of the above-mentioned basic steel member is mounted to the support layer of the underground. In the figure, the L-line system An imaginary line connecting the butt joints 14 of the steel sheet pile 10. The section formed by the steel sheet piles (7) and the line is raised/closed into the closed section 31. The presence of the closed section 31 can smash the soil of the branch (4) Therefore, a higher vertical support force can be obtained. The number is not limited to the above example. Fig. 3 shows an example in which the mounting position of the water spout pipe 18 has been changed. In the modification of the thirteenth 201033442, the sprinkler pipe 18 is attached to the flap. Fig. 4A shows a modification of the shape of the steel sheet pile 10. In this modification, the 'wing portion 12 is also provided on both sides of the web portion u and is inclined toward the inner side in the drawing, «plate At the apex of the sum, there is a joint portion 14. "In this modification, the steel sheet pile money face hat-shaped boots, the side joints and the other side joints u are mutually point-symmetrical. The result is The crotch portion w is formed upward in the drawing, and the joint portion 14b is formed in a state of being downward in the drawing. In the modification of the above Fig. 4A, the steel sheet pile 1 has an *spray water pipe. In the figure, it is arranged in two on each side. On the left side, each of the flaps 12a and the joint portion 14a is disposed with each ljt. Moreover, there are two branches on the right side of the flap (3). The water spout pipe 18 is not particularly disposed in the joint portion 14b facing downward. Figure 4B shows the steel plate pile of the cross-section hat shown in Figure 4A.

On, the water pipe! The configuration of 8 has been changed. In this example, four water sprinkler pipes 18 are also mounted on the steel sheet pile 1〇. The water spout pipe 18 is provided with two branches on the left and right sides, two on the flaps 12a and the flaps 12b, and the spout portions 14 & 14b.

Further, the joint portion 14 of the steel member 1 for the base member adjacent to each other is connected to each other to constitute a continuous steel wall for the base. Next, the installation position of the water spout pipe 18 to which the steel member for base of the present invention has been applied will be described in detail. The installation position of the water spout pipe 18 is preferably in the range of the distance B from the joint center position P of the joint portion 14 as shown in Fig. 5A. The so-called joint fitting center position P is the intersection of the center line L1 in the thickness direction of the arm portion 13 of the joint portion 14 of the steel sheet pile 10 constituting the hat shape and the line L2 14 201033442 which represents the effective width W. definition. Further, the effective width w is the distance between the individual fitting center positions p_p of the pair of joint portions. Fig. 5B is a view showing the distance of the steel sheet pile 1 of the cross-section u-shaped. The rear center position P is in the U-shaped cross section, and is defined by the parent point of the line L3 parallel to the web portion u and at the effective height of the portion 11 and the line U of the effective width w. Further, the distance B is defined by the above formula (1). In the formula (1), W: the effective width of the steel plate _, Η: the effective height of the pile. The effective height of the hat shape 1 _ is the ancient life of the top line (4) u of the material buckle. The water spout pipe 18 preferably conforms to the range B defined by the above formula (1). The reason is explained below. Fig. 6A shows the structure of the press machine 4 used for press-fitting the steel member for the base (4) by the press-in method. The press machine 4 includes a cooling device 41, a saddle main breast cylinder 43, a door frame 44, and a chuck 45. The jig 41 is provided with a mechanism for grasping the base steel member 1 of the _ (4). In addition, the New 41 also has the function of automatically advancing these basic steel members. The saddle 42 is provided with a moving mechanism for moving the 13⁄4 frame 44 toward the money direction, and a power source for allowing the press machine 4 to perform various operations is also installed. The main cylinder 43 is configured to be rotatable in the vertical direction in the drawing, and presses the base steel member 1 which is held by the chuck 45 toward the ground. That is, the chuck 45 can be lowered by the power of the master cylinder 43 and the base steel member 1 can be pressed into the ground. The pressing machine 4 can utilize the pulling force of the steel member 1 of the foundation in the pressed ground, and press the hydraulic pressure to press the foundation for the subsequent use. 15 201033442 Steel member 1. Fig. 6B is a view of the lost disk 45 of the house entrance machine 4 from above. The swash plate 45 can be gripped by the yoke holding mechanism 47 to push the squeezing rod in the direction indicated by the money m in the figure. Next, the inside of the moxibustion tray 45 is provided with an opening. The opening 46 is generally provided with a space to be in contact with the web portion of the conventional steel sheet pile. However, in the vicinity of the grip holding mechanism 47 of the disc 45, as shown by the field m in Fig. 6B, the gap between the opening 46 and the grip gripping mechanism is extremely narrow. In particular, the interval between the flap portion 12 and the opening 46 is extremely small, and it is difficult to provide the water spout pipe 18 outside the flap portion 12. Therefore, as shown in the first place, the © water spout pipe 18 should be disposed at a position farther from the center position p of the joint fitting, that is, to a position away from the field H1. Further, in the hat-shaped steel sheet pile, the vicinity of the center of the joint arm portion is held by the joint grip mechanism 47, so the distance B is preferably set to the lower limit value of 90 mm and the upper limit value specified in the above formula (1). Within the range, 'the spout 18 is not located in the above grip. Further, it is preferable that the water spout pipe 18 within the range specified by the above formula (1) is at least one. The reason for this is that the soil sand discharged from the joint portion 14 can be realized by disposing the water spray pipe IS at least. Further, the water spray pipe 18 may be two or more. ❿ However, when the installation position of the sprinkler pipe 18 is too far away from the center position P of the joint and the distance B exceeds the value of the right side of the formula (1), the discharge of the sprinkler pipe 18 cannot particularly be excluded from being packed in the joint portion 14 The soil sand will reduce the ease of installation. Even if the distance B from the fitting center position p to the installation position of the water spout pipe 18 exceeds the value on the right side of the formula (1), it is possible to ensure the ease of installation by increasing the water spray pressure, but construction The fee is higher and less economical, which will greatly hinder the middle layer and the support layer, and it is not advantageous for vertical support. In this invention, as described above, the distance B is defined as (1). Below the right side of the formula. When the excavation method is used only by the vibrating hammer method, I, and the obstruction of the gripping mechanism 47 of the dust machine 4 described above. Since p can be installed at a position closer to the fitting center position p of the mouth water pipe 18. In the vibrating hammer method, the distance C from the joint center position 榫 can also be set to the range defined by the formula (2). (10). Prepare H2.............(7) When using the vibrating hammer method, the installation position of the sprinkler pipe 18 is too far away from the joint = fitting center position P, and the distance c exceeds the value of the right side of the formula (2) In particular, the spray of the spray water* is particularly incapable of eliminating the sand filled with the joint portion 14, and the installation capacity is lowered. In addition, even if the distance B from the center position p of the self-jointing rod to the mounting position of the water spout pipe 18 exceeds the value of the right side of the formula (1), the amount of water spray pressure can be increased and the vibrating hammer can be enlarged. However, this will increase the construction cost and not be economical, which will greatly hinder the middle layer and the support layer and will not play the role of vertical support. Therefore, in the present invention, when the vibration clocking method is employed, as described above, the distance C is defined to be equal to or less than the right side of the formula (2). Further, the present invention is not limited to the above-described embodiment, and any configuration may be employed if a water spout pipe is provided which is installed only in the longitudinal direction on the outer side of the steel sheet roll 10. [Second Embodiment] Hereinafter, a steel member 1 for a base according to a second embodiment of the present invention will be described with reference to Figs. 7A to 9B. In the following description, the repeated description of the matters described in the above embodiments will be omitted, and the same reference numerals will be given to the same members. The inside of the so-called closing member 2 in the present embodiment means the surface side of the closing member 20 facing the closed section 31'. In the second embodiment, the member 2 is provided in the joint portion of the steel sheet which has been described in the above-mentioned jth embodiment. Alternatively, the closing member may be provided on the flap portion. In the example shown in Fig. 7A, the closing member 2 is used as the closing member 20 by using a section-shaped steel sheet pile 2〇1 which is joined to the steel sheet pile 10 having the water spray pipe in a plane symmetry. The cross-section U-shaped steel sheet pile 2〇u is opposed to the steel sheet pile 10 having a U-shaped cross section, and joined to form a base steel member r. A second water spout pipe 18 may be provided on the outer side of the closing member 20. The position at which the second water spout pipe 18' is provided may also be within the range described in the above embodiment. The joining of the steel sheet pile 10 to the closing member 20 can be applied to any of welding, bonding, bolting, rivets, screws, tacks, and the like. Further, the joining of the steel sheet pile 1〇 and the closing member 20 can be carried out at the factory or at the construction site before or during the installation. When the water spout pipe 18 (18') is attached to the inner side of the steel sheet pile 1 ,, it is necessary for the welder to enter the inside of the closed cross-section portion 31' formed by the steel sheet pile 10 and the closing member 20, and the welding operation is not easy. Do the homework. Therefore, in the present invention, the water spout pipe 18 is installed only on the outer side of the steel sheet pile 10. Further, since the water spout pipe 18 (18') is provided only outside the closed section portion 31', the cross-sectional portion 31 is closed, and the area thereof is not reduced by the cross-sectional area of the water spout pipe 18. Therefore, a high vertical support can be maintained. As described above, the closing member 18 201033442 20 composed of the steel sheet pile 20U having the U-shaped section is joined to the steel sheet pile 10, as shown in Fig. 78, and can be formed by the steel sheet pile 10 and the closing member 20. A portion of the closed section 31'. Then, the base steel member 压 is press-fitted into the ground to fill the inside of the closed cross-section portion 31'. Further, the tamping has been filled with the clods in the closed cross-sectional portion 31, and the steel member 1 for the base is closed. As described above, in the present embodiment, the steel sheet pile 10 is joined to the closing member 20, and the closed sectional portion 31 having the sectional area larger than that of the closed sectional portion 31 of the first embodiment can be obtained. Therefore, a higher vertical support force can be obtained, and even, the water spout pipe 18' can be provided on the steel sheet pile on the side of the closing member, so that the ease of installation can be improved. In the present embodiment, as described above, the closing member 2 is not limited to the use of a steel sheet pile. That is, as shown in Fig. 8A, the steel sheet 20B may be provided as the closing member 20 for the steel sheet pile 10 having a U-shaped cross section. The joining of the closing member 2 can also be carried out by the above-described joining or bonding. At this time, as shown in Fig. 8B, a closed cross-sectional portion 31' can be formed inside the steel sheet pile 10 and the steel sheet 20B. Next, the base steel member 1'' is pressed into the ground to be closed to the closed cross-section portion 3, and the clod is filled inside. Therefore, the steel member for the base can be firmly closed. At this time, the second water spout pipe may be provided outside the closing member 20 (20B). Further, as shown in FIG. 9A, a hat-shaped steel sheet pile can be used as the steel sheet pile 10', and the second cross-section hat-shaped steel sheet pile 20H as the closing member 20 can be joined to the steel sheet pile 10 and joined to form a foundation. Use steel components to smash. Further, as shown in Fig. 9B, a cross-section hat-shaped steel sheet pile can be used as the steel sheet pile 10', and the steel sheet 20B as the closing member 20 can be joined to the steel sheet pile 1B and joined to form a basic steel member. 1,. In either case, the second water spout pipe 18 can be provided on the closing member side. Further, in any form, the 201033442 closed cross-section portion 31'' can be formed so that the base steel member 1' can be pressed into the ground, so that the clod can be filled into the closed cross-sectional portion 31'. Therefore, the steel member 1 for the base can be firmly closed. Next, the pressing method of the steel member for the base of the present invention will be described in detail with reference to the drawings. Here, the basic steel member 1 of the above-described second embodiment will be described as an example. First, as shown in Figure 1A,

Water is sprayed through the nozzle 19 through the water spout pipe 18, and the basic steel member J is placed (step 1). The above-described driving can be carried out using the above-described press machine 4, or by a vibrating hammer method. Initially, the base steel member 1 is placed in the intermediate layer 61. In this case, the water spray of the water spout pipe 18 is continued, so that the intermediate layer 61 can be easily laid out for the base steel member i. Next, as shown in Fig. 10B, the water spray of the water spout pipe 18 is performed until the lower end of the base steel member 接近 is near the support layer 62, and the water operation of the water button is stopped (step 2). Then, as shown in the first GC diagram, the water spray is continuously stopped, and the lower steel end member is passed through the support layer 62 (step 3). The following is performed for the above-mentioned support layer 62, and as shown in Fig. 10D, the knot is again constructed (step 4). The mouth water of the sprinkler pipe 18 is stopped and continues to its running. VI, ～ UA 11D diagram shows the use of the steel components of the basics of the invention = Τ 9:: ζ: First, as shown in the UA diagram, 'water is passed through the water pipe 18, and the basic steel is used. The making of the component 1 (step ☆ 'continues the spray of the sprinkler pipe 18' into the base _ component, followed by the water operation of the ke 18 of the 11B lamp until the lower end of the steel member 1 of the base is approached 201033442 After the support layer 62 is near, the water discharge pressure of the sprinkler of the sprinkler pipe 18 is lowered, and the water spouting is weakened (step 2,). Then, as shown in Fig. 11C, the water spout is weakened. In the state of the support layer 62, the lower end of the base steel member 1 is passed through (step 3). Further, the above-mentioned support layer 62 is further driven, and as shown in Fig. 11D, the facility is terminated (step 4,). Before the end thereof, the state in which the water spray of the water spout pipe 18 is stopped or the water spray pressure of the sprinkler has been lowered is continuously maintained.

Fig. 12 is a view showing a specific example in which the discharge of the water of the water spout pipe 18 is stopped or the discharge is reduced. In this example, the water sprinkler can be stopped or the water discharge pressure can be lowered before the lower end of the steel member 1 which is laid underground (the intermediate layer 61) reaches the support layer from the 3111 of the support layer 62. Secondly, after the reduction to the end of the «thuse, the discharge of the water of the sprinkler pipe 18 is stopped or the discharge is weakened. When the depth of the upper end of the steel structure is lower than the upper end of the support layer 62, the depth of the water spray stop or the discharge of the spray pipe 18 will be between (3 + a) m. (4) Continued implementation. In addition, in this example, before the bottom of the steel member 1 is pressed into the ground (intermediate layer 61), the sprinkler is stopped or the water discharge pressure is lowered, and the water spray pressure is lowered, and then continues until the lower end of the steel member 1 reaches the support layer from the support layer m. Until the end of the design. In the above case, the discharge of the water from the water spout pipe 18 or the weakening operation of the discharge is continued between (i + a) m. In the column, the steel member for the foundation to be laid underground (intermediate layer 61) can stop the water sprayer or reduce the tree pressure before the lower end of the support layer 62 reaches the support layer 62 as before. Therefore, it is possible to avoid the water of the mouth of the 18th (four) coffee, and to bury the basic steel member 未 for the support layer 62 of the non-= 21 201033442, when applied to the basic structure capable of supporting the structure in the vertical direction, Play a higher vertical support. Further, at the same time, in the present invention, the water spray operation of the water spout pipe 18 is continued until the lower end of the base steel member reaches the support layer 62. As a result, the squeezing of the intermediate layer 61 can be performed extremely easily. Therefore, when the steel member for basic use of the present invention is applied, the steel member 1 for the base is used for the underground spray using the spray of the sprayer.

The sprinkler enhances the applicability and does form a apex closure to provide vertical support. In addition, after the water spray of the water spout pipe 18 is stopped, the soil sand will flow into the nozzle 19 of the sprinkler. Therefore, if the ease of installation of the inter-powder layer 61 and the support (4) is extremely low, the water sprayer is required to be re-increase (4). The above-mentioned nozzle of the flow person may have a shape (four) and it is impossible to restore the ease of installation. On the other hand, the water spray of the water spray pipe 18 is not stopped, and only the water sprayer is depressurized, so that the soil sand can be prevented from flowing, and if the ease of the middle (four) 61 and the support buckle is extremely low, the material is grounded. Once again, increase the pressure of the spray.

As usual. The water discharge pressure of the sprinkler pipe 18 described above is often carried out at a pressure of 10 MPa. However, in the present invention, when the discharge force of the water of the nozzle water pipe 1 described above is weakened, it will be - half of the HMPa, that is, the water is ejected, and the force will be 5 MPa or less. Therefore, it is possible to suppress the intermediate layer 61 from being obstructed, and to avoid the pressure of the water ejection pressure from being easily re-introduced into the nozzle 19, and to secure the supporting force at the lower end portion of the base member 1. By the way, when the water pressure of the water (10) is reduced, if the water pressure exceeds a', the intermediate layer (4) cannot be inhibited, and the support force is lowered. Further, if the water sprayed by the sprinkler has a force of 2.5 MPa or less, it is impossible to prevent the soil sand from flowing into the nozzle 19. On the other hand, if the water discharge pressure of the sprinkler is 2.5 MPa or more, at least the soil sand can be prevented from flowing into the nozzle 19. Therefore, when the water discharge pressure of the water sprayer is lowered, the water discharge pressure should be kept at 2.5 MPa or more and 5 MPa or less. [Embodiment 1] Table 1 shows the effective width W, the effective height 各 of each type of the steel member 1 for use of the base material to which the present invention is applied, and the distances B and C calculated according to the formulas (1) and (2). In Table 1, {(W/2)2+H2}1/2 on the right side of the equations (1) and (2) is represented by Α. [Table 1] Category type effective width: w (mm) Validity: Η (mm) A={(W/2)2+H2}0·5 (mm) BA*0.80 (mm) C=A*0.40 (mm) hat-shaped steel sheet pile (900mm wide) SP-10H 900 230 505 404 202 SP-25H 900 300 541 433 216 U-shaped steel plate 600 (600 ugly width) SP-IHw 600 180 350 280 140 SP-IVw 600 210 366 293 146 U-shaped steel sheet pile (400mm wide) SP-Π 400 125 236 189 94 SP-IV 400 170 262 210 105 u-shaped steel sheet pile (500mm wide) SP-VL 500 200 320 256 128 SP-VIL 500 225 336 269 135 When each type adopts the press-in method, in the range of B, when the vibrating hammer method is used, the water spray pipe 18 is disposed in the range C, and the earth sand filled in the joint portion 14 can be excluded, and Construction is carried out with small spray pressure or less construction machinery output. Therefore, it is possible to obtain more vertical support through efficient design. INDUSTRIAL APPLICABILITY 23 201033442 According to the present invention, it is possible to provide a steel sheet pile for underground use by spraying with a water sprayer, and it is possible to improve the workability by means of a water sprayer, and to open the front end closure portion to provide vertical support. The basic structure of the force is made of steel members, basic steel members, and steel continuous walls. Therefore, the use of the industry is highly probable. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1A is a cross-sectional view showing a steel member for basic use according to a first embodiment of the present invention. Fig. 1B is a cross-sectional view showing a closed cross-sectional portion formed by the steel sheet pile and the false-state line L on the steel member for basic use. Fig. 2 is a perspective view of the above-described basic steel member. Fig. 3 is a front view showing an example in which the installation position of the water spout pipe has been changed. Fig. 4A is a front view showing a mounting example of four spray pipes. Fig. 4B is a cross-sectional view showing another mounting example of four water spout pipes. Fig. 5A is a view showing the construction of the water spout pipe in the range of the distance B from the joint center position of the joint portion. Fig. 5B is a view showing the distance b on the steel sheet pile of the U-shaped section. Fig. 6A is a view showing the structure of the press machine used when the steel member for the base is pressed by the press-fitting method. Fig. 6B is a view of the chuck 45 of the aforementioned press machine viewed from above. Fig. 7A is a perspective view showing a steel member for a base according to a second embodiment of the present invention. Fig. 7B is a cross-sectional view showing a closed cross-sectional portion formed by the steel sheet pile and the closing member on the above-described steel member for basic use. Fig. 8A is a cross-sectional view showing a steel member made of a steel member according to a second embodiment of the present invention, which is a structure of a steel member used in the case of using a steel plate as a closing member. Fig. 8B is a cross-sectional view showing the closed cross-sectional portion of the above-mentioned basic steel member which is opened by the steel sheet pile and the closing member. Fig. 9 is a cross-sectional view showing a modification of the steel member for a base according to the second embodiment, and is a cross section showing a steel member for use as a steel sheet pile and a closed member using a cross-section hat-shaped steel sheet pile. Figure. Fig. 9B is a plan view showing a modification of the steel member for a base according to the second embodiment, and shows a steel member for the base when a cross-section hat-shaped steel sheet pile is used as a steel sheet pile and a steel sheet is used as a closing member. Sectional view. Fig. 10A is a view showing the step 1 of the method of applying the steel member for the base of the present invention. Fig. 1 is a diagram showing the second step of the above-described setting method. The i 〇c diagram illustrates the steps 3 of the foregoing method of setting. Fig. 10D is a diagram showing the steps 4 of the foregoing setting method. Fig. 11A is a view showing the first step of the other method of designing the steel member for the base of the present invention. Fig. 11B is a view showing the second step of the above-described setting method. Fig. 11C is a view showing the third step of the above-described setting method. Figure 11D illustrates step 4 of the foregoing method of setting. Fig. 12 is a view showing a specific example of the water discharge or the discharge of the water by the water spout. Figure 13 is a diagram illustrating a conventional technique. [Description of main component symbols] 25 201033442 1, r... Basic steel members 1 to 4, Γ~4, ·.. Step 4: Pressing machine 10···Steel plate 11... Web part 12... Wing part 12a, 12b... wing 13... arm portion 14... joint portion 14a, 14b... joint portion 18: water spray pipe 18a... first end portion 18b... second end portion 18'... second water spout 19... nozzle 20 ···Closed member 20B...Steel plate 20H...Second section hat-shaped steel sheet pile 20U... Sectional U-shaped steel sheet pile 31, 31'···Closed section 41...Jig 42...Saddle 43...Main cylinder 44...Door frame 45...The chuck 46...the opening 47...the gripping mechanism 61...the intermediate layer 62...the support layer 101···the combination steel plate 102...the steel sheet pile 103···the closed steel material A...the long side direction B, C··· Distance D3...Arrow number 有效...effective height Η1...field L···hypothetical line L1··· center line L2...line L3...straight line 榫...joining fitting center position W...effective width 26

Claims (1)

201033442 VII. Patent application scope: 1. A basic steel member, characterized in that: a steel sheet pile, including a web portion, is connected to one of the web portions of the web portion, and is provided in the aforementioned wing The _ part of the plate portion; and the butt joint of the first water spout pipe are installed only in the longitudinal direction other than the steel sheet pile. Fan steel sheet pile G 2· The steel member for basic use according to item i of the patent application scope, wherein the water spray pipe has B as the first center of the joint center γ of the joint portion, which is the effective width of the steel sheet pile, H For the steel sheet coil = effect ' degree, it is set to satisfy the following condition B^0.80x^yJ + H2. 3. If you apply for a patent scope! Or the base of the two items is made of a brocade member, and the stalker has a closed portion that can be joined to the inner side of the steel sheet pile. 4. The steel member for the base of the third item of the patent application, / only a second water spout pipe provided on the outer side of the closing member along the long side of the closing member. Q5. For the basic steel component used in the fourth paragraph of the patent application, the front sprinkler pipe has B as the effective center width of the steel plate pile with the joint portion of the joint portion, H For the above-mentioned steel sheet, the height of the steel sheet is set to meet the following conditions: B < 0.80: W'Ύ, + H^ 27 201033442 6. 5 The basis of the first or second application of the patent scope _ component, which further includes the control of the foregoing 1 Control device for the discharge output of the sprinkler pipe. 7. The steel member for basic use according to item 6 of the patent application, wherein the control device is controlled before the lower end of the base steel member that has been pressed into the ground from the support layer of the support layer to the support layer. The water spray pressure of the water sprinkler is lowered to 5 MPa or less. 8. The base-cut member according to claim 1 or 2, wherein the lower end portion of the first water spout pipe is further provided with a nozzle for discharging a liquid vertically downward, and a method for setting the base steel member is If the basic steel member is applied to the underground, such as the patent application scope 1 or 2, the following steps are included: 7 spraying the water from the nozzle pipe and burying the foregoing basic steel member toward the underground; The lower end of the manufacturing member stops the water spraying operation before reaching the support layer from 1 to 3 m of the support layer of the underground. 〇. The basic method for the construction of steel members can be used to design the basic steel components of the first or second patent application area, including the following steps: The water spray pipe of the month J is sprayed and buried in the underground The base steel member is configured to reduce the water discharge pressure from the water spout pipe to 5 MPa or less before the lower end of the base steel member reaches the support layer from 1 to 3 m ± of the underground support layer. 11', as in the case of the 10th item of the patent scope, the method of using the steel member of the method of 201033442, after the step of reducing the water discharge pressure to below 5 MPa, further comprising spraying water from the water spray pipe The pressure is maintained at a step of 2.5 MPa or more and 5 MPa or less. 12. A continuous steel wall for basic use, comprising at least two basic steel members according to claim 1 or 2, wherein the at least two of the foregoing are formed by connecting the steel members to each other. The base is threaded through the lower end of the steel member to the support layer. 13. A continuous steel continuous wall comprising at least two basic steel members according to claim 1 or 2, wherein the at least two of the foregoing are formed by connecting the steel members to each other. The base steel member includes a first base steel member through which the lower end passes through the intermediate layer, and a second base steel member through which the lower end passes through the support layer. ❿ 29