JP5257407B2 - Installation method and installation structure of angry material - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an installation method and an installation structure for an erection material, for example, a cutoff water barrier constructed when a structure is built in an underwater part or a retaining wall constructed when a structure is built in a soil part. In the construction or the like, it is applied to the installation of an erection material installed for the purpose of reinforcement on the front surface of these continuous walls, and the erection material can be easily installed.

  When constructing structures such as road piers in rivers and lakes, first install a cutoff water wall surrounding the construction position of the structure, drain the water inside the cutoff water wall, and then the structure. The construction work is done.

  When building a structure in the ground, first, a retaining wall is installed in the vicinity of the construction position of the structure, and after the soil in front of the retaining wall is removed, the structure is built.

  In this case, steel sheet pile wall or steel pipe sheet pile wall is often used as the cutoff water stop wall or earth retaining wall, but if the wall height of the cutoff water stop wall after drainage or the wall height after soil discharge becomes high, Since the strength of the water barrier wall or earth retaining wall cannot withstand the water pressure or earth pressure from the outer periphery, a support structure mainly composed of a raised material and a beam member is installed in front of the cutoff water barrier wall or the earth retaining wall. Thus, a method of reinforcing the cutoff water stop wall or the retaining wall is adopted.

  When installing a support, it is common to first install the erection material at a predetermined horizontal position on the cutoff water barrier wall or retaining wall, and then install the timber material so as to contact the erection material. is there.

  For example, Patent Document 1 discloses a soil cement wall mainly made of in-situ soil, and a mountain retaining wall made of H-shaped steel placed therein, from an erection material, a cut beam, and a tieback anchor. The method to reinforce by the supporting work which becomes is described.

  Further, in Patent Document 2, when excavating a digging groove for the purpose of laying a buried pipe or the like, as a support for supporting a sheet pile wall that protects the groove wall under construction, There is described an earth retaining support device configured to be provided with an erection material to be attached and a cut beam jack hung between the erection materials.

JP-A-8-109634 JP 2006-37552 A

  However, since the lining material of the support is generally required to be suspended from the upper part of the cutoff water barrier wall or retaining wall with a crane and installed while positioning, the work is complicated and There were problems such as poor work efficiency.

  Further, the abdominal mounting structure disclosed in Patent Document 1 has been developed to save labor and reduce complexity, but this method requires a large-scale device and is costly. There was a problem such as swelling.

  Furthermore, although the method disclosed in Patent Document 2 was developed in order to improve the efficiency of the method of attaching the erection material of the support work, this method is performed at a predetermined position of the erection material. This relates to the fixing method, and the work until the erection material is carried to a predetermined position is still complicated.

  In addition, as in the case where the application target is a groove wall during excavation or the like, there is a problem that it is applied only to a support work supporting a sheet pile wall constructed in a relative manner, and the application range is extremely limited.

  The present invention has been made in order to solve the above-described problems, and has a belly prong that can be easily installed at a predetermined position on the front surface of a continuous wall constructed as a cutoff water stop wall or a retaining wall. It aims at providing the installation method and installation structure of a timber.

  The method for installing the raising material according to claim 1 is provided on a front surface of a continuous wall constructed by a plurality of combined steel sheet piles composed of a steel sheet pile and a shape steel for stiffening provided in the longitudinal direction of the steel sheet pile. In the installation method of the flank material to be installed, the guide member attached to the flank material is disposed substantially horizontally on the side portion of the shape steel at the upper end portion of the continuous wall. Engaging the shape steel, using the shape steel as a guide material, dropping the bellows material below the continuous wall, and a stopper of the guide member attached to the shape steel. And a step of installing the angry material at a position to be stopped.

  In the present invention, an erection material is continuously provided at a predetermined position on the front surface of a continuous wall constructed by a plurality of combination steel sheet piles composed of a steel sheet pile and a stiffening shape steel provided in the longitudinal direction of the steel sheet pile. It was designed to be installed easily by dropping from the top of the wall, and it was built not only as an erection material installed in front of a continuous wall constructed as a temporary structure, but also as a permanent structure. It can also be applied to the installation of belly raising material installed in front of the continuous wall, for example, when the belly raising material is installed from the water surface on the front of the continuous wall constructed underwater as a cutoff water barrier Suitable for such as.

  As temporary structures to which the present invention can be applied, when building a bridge foundation in an underwater part of a river or the like, a “temporary cut-off work” constructed for construction, a “earth retaining wall” in a road tunnel excavation method, a building There are “earth retaining wall” when excavating the underground part of the construction, “river revetment” and “port quay” using the pile method, and “road retaining wall” using the earth anchor method.

  In addition, in the “river revetment” and “harbor revetment” retaining wall of the river bank as the main construction structure, the “raft anchoring method” of the tie rod mounting part and “road retaining wall” etc. It can also be applied to the installation of the erection material of the anchor attachment portion.

  According to the present invention, at the upper end portion of the continuous wall constructed as a cutoff water stop wall or earth retaining wall, the flank material is arranged substantially horizontally on the side surface of the shape steel, and is attached to the flank material. By engaging the guide member with the shape steel and using the shape steel as a guide material, the erection material is dropped from above the continuous wall, so that it can be easily installed at a predetermined position on the front surface of the continuous wall.

  In this case, the steel sheet pile and the shape steel are integrally formed before the construction by welding, connecting bolts, etc., and the steel sheet pile and the shape steel are integrated. In any combination steel sheet pile, it is desirable that a stopper for hooking the guide member is attached in advance to the shape steel before construction.

  U-shaped steel sheet piles and hat-shaped steel sheet piles can be used for the steel sheet piles, and H-shaped steel, groove-shaped steel, cut T-shaped steel, etc. can be used for the shaped steel. It can be installed on the groove side of the sheet pile to be a plane substantially Y-shaped combination steel sheet pile, or can be installed on the opposite side of the groove to be a plane substantially T-shaped combination steel sheet pile.

  In addition to the H-shaped steel, a grooved steel or the like can be used as the bulging material. In addition, the guide member of each erection material may be attached at a position where it is engaged with every other row or every other shape steel, and it is attached at a position where it is engaged with at least two shape steels. The material can be smoothly dropped using the shape steel as a guide material.

  In addition, usually, two or more erected materials are installed, but the continuous wall made of combined steel sheet piles has a large cross-sectional force from the beginning, so the number of erected materials may be small, and therefore one-stage. There is also. In particular, if it is possible to install a single piece of uplifted material in a deep part of the underwater, this is a very promising method.

  Further, in the case of the main structure, a so-called “reserved pile structure” in which tie rods are installed near the head of the continuous wall is basically one step.

  The method for installing the belly raising material according to claim 2 is the method for installing the belly raising material according to claim 1, wherein the belly raising material is installed in a plurality of stages on the front surface of the continuous wall, It is characterized in that the shape steel set as the guide material is made different for each set, the height of the stopper is changed for each set, and dropped in order from the bottom.

  The present invention is a method of installing a plurality of erection materials on a front surface of a continuous wall according to the height of the continuous wall in a plurality of stages. According to the present invention, the stoppers of each stage are arranged in different rows. Since it is attached to the combination steel sheet pile, the stopper of the other step does not become an obstacle, and it is not difficult to install the erection material. Therefore, it is possible to install a plurality of erection materials in order from the bottom to the positions of the respective stages set in advance and install them very efficiently.

  In the case of a combined steel sheet pile, the height of the retaining wall (depth for excavating the soil) is usually about 7 m to 20 m, and the interval between each step of the erection material is about 3 to 4 m. The raising material may be installed in about 1 to 5 stages according to the wall height.

  According to a third aspect of the present invention, there is provided a method for installing the lining material according to the first or second aspect, wherein the steel sheet pile and the shape steel are integrated with each other before the construction. It is constructed by the real thing, It is characterized by the above-mentioned.

  For example, if the steel sheet pile and the shape steel are welded over the entire length in advance, the cross-sectional performance of the wall body is greatly improved. Or, when steel sheet piles and shaped steel are transported separately to the construction site (this is significantly better in transport efficiency), it is difficult to perform full-length welding at the site, but construction can be done by bolting the necessary parts. Construction is easy if it is integrated so that it is not separated at times.

  According to a fourth aspect of the present invention, there is provided a method for installing the lining material according to the first or second aspect, wherein the steel sheet pile and the shape steel are integrated before the construction of the combined steel sheet pile. It is characterized by being constructed in contact with each other.

  According to this method, since the steel sheet pile and the shaped steel are separately constructed, the force required for construction (placement) is reduced, and noise and vibration during construction can be reduced. In addition, in this method, a device for performing construction so that the steel sheet pile and the shape steel are in contact with each other (for example, a member that serves as a guide for the shape steel is previously attached to the steel sheet pile to be placed in advance). May be.

  The installation structure of the raising material of Claim 5 is installed in the front surface of the continuous wall constructed | assembled by the combined steel sheet pile which consists of a steel sheet pile and the shape steel for stiffening provided in the longitudinal direction of the said steel sheet pile. And a guide member that is attached to the bellows member and slidably engages with the shape steel in the axial direction thereof, and the bellows material of the shape steel is installed. It is attached to the position, and is configured to include the guide member and a stopper to be hooked.

  The installation structure of the flank material according to claim 6 is the installation structure of the flank material according to claim 5, wherein the flank material is installed in a plurality of stages on the front surface of the continuous wall. A set of shape steels with which the guide members provided in the stepped bulges are engaged are different, and the height of the stopper attached to the shape steel is different for each set.

  According to the present invention, at the upper end portion of the continuous wall constructed as a cutoff water stop wall or earth retaining wall, the flank material is arranged substantially horizontally on the side surface of the shape steel, and is attached to the flank material. By engaging the guide member with the shape steel, and using the shape steel as a guide material and dropping the erection material from above the continuous wall, the erection material can be easily installed at a predetermined position on the front surface of the continuous wall. it can.

  In addition, by changing the shape steel set that serves as the guide material for each upset material, changing the height of the stopper for each set, and dropping the upset material in order from the bottom, the height of the continuous wall is increased. Accordingly, a plurality of angry materials can be installed in a plurality of stages.

It is a partial cross-sectional view of a continuous wall constructed as a cutoff water barrier or a retaining wall. It is a partial perspective view which shows the combination steel sheet pile which comprises a continuous wall, and the uprising material installed in the front surface. The continuous wall constructed | assembled as a cutoff water stop wall or a retaining wall is shown, (a) is the partial front view, (b) is the sectional view on the AA line in (a). It is a partial front view of the continuous wall which shows the position of the stopper of each step | level before installing a stomach raising material. It is the partial front view of the continuous wall which shows the procedure which installs the belly raising material in the front of a continuous wall, and shows the state which installed the first stage belly raising material. It is the partial front view of the continuous wall which shows the procedure which installs the belly raising material in the front of a continuous wall, and shows the state which installed the second stage belly raising material. It is the partial front view of the continuous wall which shows the procedure which installs the belly raising material in the front of a continuous wall, and shows the state which installed the third stage belly raising material. The procedure for installing the erection material on the front surface of the cutoff water stop is shown, (a) is a cross-sectional view taken along the line BB in FIG. 3 (a), and (b) to (d) are FIG. It is a CC sectional view taken on the line in FIG. (a)-(c) is CC sectional view taken on the line CC in FIG. 3 (a) of the earth retaining wall which shows the procedure which installs an uprising material in front of the earth retaining wall.

  1 to 3 show a continuous wall constructed as a cut-off water stop wall or a retaining wall and a support constructed on the front surface for the purpose of reinforcing the continuous wall.

  For the continuous wall 1, a plane substantially Y-shaped combination steel sheet pile 4 comprising a hat-shaped steel sheet pile 2 and an H-section steel 3 installed on the opposite side of the groove 2a is used. The combination steel sheet pile 4 is a hat-shaped steel sheet. It is continuously installed in the width direction in a state where the sheet piles 2 are coupled to each other.

  The hat-shaped steel sheet pile 2 and the H-shaped steel 3 may be fixed together in advance by welding or joining bolts or the like, and may not be necessarily fixed simply by being installed adjacent to each other on site. Furthermore, a hat-shaped steel sheet pile or a U-shaped steel sheet pile may be incorporated between the combined steel sheet pile and the combined steel sheet pile.

  In particular, a set of stoppers 6 and 6 for holding an erection material 5 described later is attached to the outer side of the inner flange 3a (the flange located on the support side) of the H-section steel 3. The stopper 6 is symmetrically attached to both sides of the web 3b with the side surface portion at the position where the erection material 5 is installed.

  An angle piece or the like is used for the stopper 6 and is attached in advance to the side portion of the inner flange 3a by welding or bolting. Instead of the angle piece, a bolt (not shown) may be provided on the inner flange 3a so as to serve as a stopper.

  The supporting work 7 is composed of a bellows 5 installed horizontally on the front surface of the continuous wall 1 and a plurality of beams 8 that hold the continuous wall 1 via the bellows 5. H-section steel is used for the erection material 5 and the cut beam 8, and a plurality of stages are installed on the front surface of the continuous wall 1 with a predetermined interval.

  Further, in particular, a set of guides engaged with the left and right edge portions of the inner flange 3a of the H-shaped steel 3 on the outer side of the outer flange 5a (flange positioned on the hat-shaped steel sheet pile 2 side) of the bell-raised material 5 Members 9, 9 are attached.

  An angle piece or the like is used for the guide members 9 and 9 and is attached to the side portion of the outer flange 5a by welding or mounting bolts or the like so as to form a substantially lip groove shape when viewed from above.

  Then, the inner flange 3a of the H-shaped steel 3 is engaged between the guide members 9 and 9, whereby the angling member 5 is guided by the inner flange 3a and slides downward in the H-shaped steel 3, and the guide The members 9 and 9 are installed almost horizontally at the positions where they are engaged with the stoppers 6 and 6. One end side of the cut beam 8 is joined to the inside of the erection material 5 and is installed at regular intervals in the longitudinal direction of the erection material 5.

  In such a configuration, a procedure for installing an erection material on the front surface of a continuous wall constructed as a cutoff water stop wall or a earth retaining wall will be described (see FIGS. 4 to 7).

(1) First, the continuous wall 1 is constructed by a plurality of combined steel sheet piles 4. When constructing the combined steel sheet piles 4, the stoppers 6, 6 are attached to the H-shaped steel 3 of each combined steel sheet pile 4, and the guide members 9, 9 are attached to the erection material 5.

  The stopper 6 is attached to all the stages of the H-section steel 3 of each combination steel sheet pile 4 before the combination steel sheet pile 4 is constructed, for example, immediately after the combination steel sheet pile 4 is brought into the field or at a factory.

  Moreover, the stopper 6 of each step is attached to every other row or every several rows of the adjacent combined steel sheet piles 4, and is attached to the combined steel sheet pile 4 of a different row for each step, and the stoppers 6 of the same step are at least two rows. It is attached to the combination steel sheet pile 4. The guide member 9 of the belly raising member 5 at each stage is attached at a position corresponding to the stopper 6.

(2) Next, the first-stage (bottom-stage) erection material 5 is installed on the front surface of the continuous wall 1. At the time of installation, at the upper end portion of the continuous wall 1, the erection material 5 is disposed substantially horizontally along the side surface of the inner flange 3 a and the upper end portion of the inner flange 3 a is engaged between the guide members 9 and 9. . Then, using the inner flange 3a as a guide material, the erection material 5 is dropped below the continuous wall 1 and installed at a position where the guide members 9, 9 are hooked with the stoppers 6, 6. Then, the first stage beam 8 is installed to complete the first stage support work.

(3) Next, the next-stage raised member 5 is installed on the front surface of the continuous wall 1. At the time of installation, in the same manner as when the lowermost erection material 5 is installed, the erection material 5 is arranged almost horizontally along the side surface of the inner flange 3a at the upper end portion of the continuous wall 1, and the guide The upper end portion of the inner flange 3 a is engaged between the members 9 and 9. Then, using the inner flange 3a as a guide material, the erection material 5 is dropped below the continuous wall 1, and the guide members 9, 9 are installed at positions where they are hooked with the second-stage stoppers 6, 6. And the cut beam 8 is installed.

  In the same manner, the inner flange 3a of the H-shaped steel 3 is used as a guide member, and a plurality of raised members 5 are dropped below the continuous wall 1 to be installed in a plurality of stages on the front surface of the continuous wall 1. Can do.

  At that time, the stopper 6 of each step is attached to the H-section steel 3 of the combination steel sheet pile 4 in a different row for each step, so that the stopper 6 of the other step becomes an obstacle and the erection material 5 Installation will not be difficult.

  8 (a) to 8 (d) show a procedure for installing an abdomen on the front surface of the cutoff water wall constructed particularly in the underwater portion. Also in the following examples, description will be given in a mode in which the angry material has two stages (referred to as the first and second stages in order from the bottom as in the above example).

(1) First, the uprising material 5 is installed on the front surface of the cutoff water barrier in the first and second steps.

(2) Next, after lowering the water level to a position below the second-stage raised member 5, the second-stage beam 8 is installed. Then, after the water level is lowered to a position below the first-stage raised member 5, the first-stage beam 8 is installed.

  Moreover, FIG. 9 (a)-(c) shows the procedure which installs a belly material on the front surface of the earth retaining wall especially constructed in the ground.

(1) First, excavate the soil in front of the retaining wall 1 to a position slightly below the position where the second erection material is installed.

(2) Next, the second-stage and first-stage raised members 5 are stacked one above the other and lowered to the second-stage position. At this time, the second-stage bell-raised material 5 can be installed at the first-second stage position by the guide members 9 and 9 being hooked by the stoppers 6 and 6.
However, since the first-stage erection material 5 is not hooked on the stover 6, the first-stage erection material 5 is suspended and held on the second-stage erection material 5 by a binding member 10 such as a wire.

(3) Next, the second stage beam 8 is installed to complete the second stage support work.

(4) Next, after excavating the ground in front of the retaining wall 1 to a position slightly below the position where the first-stage raised member 5 is installed, the first-stage raised member 5 is installed. To do. After that, the first stage beam 8 is installed.

  The present invention can easily and efficiently install an uprising material on the front surface of a continuous wall constructed as a cutoff water blocking wall or a retaining wall.

DESCRIPTION OF SYMBOLS 1 Continuous wall 2 Hat-shaped steel sheet pile 2a Groove 3 H-shaped steel 3a Inner flange (guide member)
3b Web 4 Combined steel sheet pile 5 Raised material 6 Stopper 7 Supporting work 8 Cut beam 9 Guide member 10 Bundling member

Claims (6)

  In the installation method of the raising member installed on the front surface of the continuous wall constructed by a plurality of combined steel sheet piles composed of a steel sheet pile and a shape steel provided in the longitudinal direction of the steel sheet pile, the upper end of the continuous wall In the method, a step of substantially horizontally arranging the erection material on the side of the shape steel and engaging a guide member attached to the erection material with the shape steel, and using the shape steel as a guide material And the step of dropping the anti-raised material below the continuous wall, and the step of installing the anti-raised material at a position where the stopper is attached to the shape member of the guide member. The installation method of the belly raising material characterized.   2. The method of installing the flank material according to claim 1, wherein the flank material is installed in a plurality of stages on the front surface of the continuous wall, and a set of shape steels serving as a guide material for each flank material of each stage. The installation method of the lining material characterized by changing the height of the stopper for each set, and dropping in order from the bottom.   In the installation method of the raising material of Claim 1 or 2, a steel sheet pile and a shape steel are integrated, and a construction steel sheet pile is constructed with one thing before construction. How to install angry material.   In the installation method of the lining material according to claim 1 or 2, the combined steel sheet pile is constructed so that the steel sheet pile and the shape steel are not integrated before construction and are in contact with each other. The installation method of the lining material characterized by.   In the installation structure of the erection material installed on the front surface of the continuous wall constructed by a combined steel sheet pile composed of a steel sheet pile and a stiffening shape steel provided in the longitudinal direction of the steel sheet pile, A guide member that is attached to the material and slidably engages with the shape steel in an axial direction thereof, and a stopper that is attached to the position where the anti-raising material of the shape steel is installed and is latched with the guide member. An installation structure for an erection material characterized by comprising the above.   6. The bellows raising material installation structure according to claim 5, wherein the bellows raising material is provided in a plurality of stages on the front surface of the continuous wall, and a guide member included in each stage of the belly raising material is engaged. An installation structure for an erection material characterized in that the shape steel sets are different, and the height of the stopper attached to the shape steel is different for each set.

Images