JP2000144769A - Method of landslide protection work for preparing housing lot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit to reduce the excavation and backfilling to a minimum in construction work stage without being affected by the ground. SOLUTION: Foundation columns 7 made of H shape steel are built and fixed along a neighboring portion between upper and lower sites 1, 2 at adequate intervals in such a manner that recessed portions 7a sides face each other. Next, sheet piles 11 are attached to the natural ground side of neighboring foundation column bodies 7 sequentially while forming the natural ground 4, supporting column bodies 9 made of H shape steel are built and fixed at the side of lower site 2 of the foundation column bodies each of them being slightly projected out from the ground surface on the lower site 2, a strut 10 made of H shape steel slanted from the upper end portion of the supporting column body 9 to the upper end portion of the foundation column body 7 is installed, which slopes toward the side of natural ground, a formwork is installed between the neighboring foundation column bodies 7, and concrete wall 12 is formed by pouring fresh concrete in a space between the formwork and a recessed portion 7a of the foundation column body 7 and sheet pile 11. After the formation of the concrete wall, the formwork is removed and a landslide protection wall 5 is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a landscaping construction in which two adjacent lands are arranged in a step-like manner, and where two lands adjacent to each other are arranged stepwise. .

[0002]

2. Description of the Related Art Conventional types of retaining works include gravity type concrete retaining walls, L-type reinforced concrete retaining walls, and inverted T-type concrete retaining walls.
There are known construction methods in which a reinforced concrete retaining wall, a buttress type retaining wall, an anchor type upright wall, a leaning wall and the like are provided.

[0003]

As shown in FIG. 34, the construction method using a gravity-type concrete retaining wall forms a concrete wall a having a substantially trapezoidal longitudinal section, and has a lower center of gravity and its own weight. And try to stop X.
It is known that it is very stable as a retaining wall. However, if the ground underneath to support the concrete wall a is not good, it is necessary to consider that the concrete wall a tilts due to its own weight. In addition, in order to increase the volume occupied by the concrete wall a or the working digging volume for forming the concrete wall a, there is a problem that large digging and backfilling have to be performed.

As shown in FIG. 35, the L-type reinforced concrete retaining wall forms a concrete wall b having an L-shaped vertical cross section, and the concrete wall b is formed by a lower horizontal side bb.
Although not shown, the inverted T-shaped reinforced concrete retaining wall forms a concrete wall having a T-shaped vertical section, and attempts to prevent the concrete wall from falling by the lower horizontal side. Things,
The buttress type retaining wall is a concrete wall b of an L-shaped reinforced concrete retaining wall shown in FIG. 35, which is provided with a triangular piece having an upper portion as an apex (see a portion indicated by a two-dot chain line). The side part bb and the triangular piece part bbb prevent the concrete wall b from falling down.

However, L-type reinforced concrete retaining wall, inverted T
Both the type reinforced concrete retaining wall and the buttress type retaining wall have a problem that they have to be excavated large and backfilled largely in order to take a working excavation volume for forming the concrete wall b.

Although not shown, the anchor-type upright wall is constituted by an upright concrete wall, and it is intended to prevent the upright concrete wall from overturning by laying the anchor horizontally or downward on the ground side and pulling the anchor. However, the laying of the anchor has been a hindrance to setting up a basement or installing a base on the site where the anchor is located. There is a problem that the use range of the site is restricted, and it is necessary to consider that the anchor may be cut off for some reason in the future.

As shown in FIG. 36, the leaning wall (machin block, masonry, stone wall, etc.) is formed by stacking a plurality of stones (or blocks) c at different levels from each other. There is a problem that it can not be adopted for high retaining walls, because there are unclear parts.

Accordingly, the present invention solves the above-mentioned conventional problems, and is not affected by the ground of the site to be constructed.
It is an object of the present invention to provide a yard stop construction method for constructing residential lands and the like in which digging and backfilling at the construction stage is reduced as much as possible, and hills of the ground are made possible by higher retaining walls.

[0009]

To achieve the above object, according to the present invention, when two sites adjacent to each other are arranged in a step-like manner, the two sites are located adjacent to each other. It is a landslide construction method of performing landslide construction on the formed ground, and at a position separated by a predetermined width from the adjacent part of the two premises to the lower premises side, it is possible to appropriately fit each other along the adjacent part. A plurality of first holes having a depth greater than the height of the ridges to be formed are formed at intervals, and the first holes are formed.
By fixing the inside of the hole with mortar, the H-shaped steel base pillars are erected and fixed so that the concave side faces each other, and then the lower premises side from the upper premises side of the foundation pillars, Until it fits the height of the ridge to be formed, while excavating to form a ground pile, insert the sheet pile on the ground pile side of the adjacent foundation pillars one by one to perform the foundation pillar body. Exposing to the ground surface, and then excavating a plurality of second holes on the lower premises side of the foundation pillar so as to face the foundation pillar with a predetermined gap therebetween, By fixing the inside of the hole 2 with mortar, the support column made of H-section steel is built and fixed so that the concave portions face each other, and the upper end of the support column is slightly protruded from the surface of the lower site, Between the upper end of the support column and the upper end of the base column. A strut member made of H-shaped steel is installed so as to be inclined toward the ground side, and both ends of the strut member are fixed to the foundation pillar and the support pillar, respectively, to support the foundation pillars, and A formwork is installed between adjacent foundation pillars, and a space is formed by the formwork, the recess of the foundation pillar, and the sheet pile. Then, concrete is poured into the space to fill the ground. A concrete wall is formed to hold a mountain, and after the formation of the concrete wall, the form is taken off. Then, a bottom wall is formed so as to cover the lower end of the foundation column and the entire supporting column. , And further, a headstone concrete is cast on the upper end of the concrete wall to cover the concrete wall, thereby forming a retaining wall.

[0010] As a result, the retaining wall is formed by the concrete wall penetrating into the concave portion of the foundation pillar to form a retaining wall together with the foundation pillar, and the foundation pillar is formed by the supporting pillar and the retaining floor. Falling down to the lower site side is prevented, and a very solid retaining wall can be formed.
Since the retaining wall only needs to be excavated with a sheet pile attached to the upper site side of the pre-installed foundation pillar, the excavation area at the construction stage and the amount of backfill after construction should be extremely small. Can be. Furthermore, the height of the retaining wall can be adjusted by the length of the foundation pillar, and moreover,
Since the anchor portion of the foundation pillar is reinforced with mortar, a relatively high retaining wall can be formed. Then, the strut member is installed so as to be inclined to the ground side between the upper end of the support pillar and the upper end of the foundation pillar, and as a result, the strut member and the support pillar are exposed to the lower site side, This method is most suitable when the landowner on the site uses the mountain retaining method.

According to a second aspect of the present invention, in the case where two adjacent sites are arranged in a stepwise manner, the earth retaining work is performed on the ground formed adjacent to the two sites. In a construction method, at a position separated by a predetermined width from the adjacent portion of the two sites to the lower site side, an appropriate gap is placed along the adjacent portion, and the height of the ridge to be formed is A plurality of first holes having a large depth are formed, and a predetermined gap is provided between the first holes and the lower premises, and a depth larger than the height of the ridge to be formed is also provided. A plurality of second holes having a hole are formed so as to be opposed to the first holes, and the inside of the first holes is reinforced with mortar, whereby the H-shaped steel base pillars are formed so that the recesses thereof are mutually formed. It is built and fixed so as to face each other, and the inside of the second hole is By fixing the support, the H-shaped steel support columns are erected and fixed so that their concave sides face each other, and then the lower site side of the foundation column is formed from the upper site side to the lower site side. Until the height of the stop is adjusted, the excavation is performed to form the ground, and the base pillar and the supporting pillar are inserted by sequentially inserting a sheet pile on the ground side of the adjacent foundation pillar. Exposure to the ground surface, and then installing a formwork between the adjacent base pillars, forming a space by the formwork and the recesses of the base pillars and the sheet pile, A concrete wall is formed to pour the concrete into the ground to retain the ground, and after the formation of the concrete wall, the formwork is removed, and a space between the upper end of the foundation pillar and the upper end of the support pillar is formed. A beam is installed on the beam, and both ends of the beam are While fixed to the cylindrical body and the support pillar, H to be inclined to the ground mountain side between the upper end portion of the base pillar and a lower end portion of the support column member
A strut member made of a shaped steel is installed, and both ends of the strut member are fixed to the base pillar and the support pillar, respectively, to support the foundation pillar, and then the base pillar and the support pillar are supported. A bottom wall is formed so as to cover the lower end of the concrete wall, and further, a top wall of the concrete wall is cast and covered with a headstone concrete to form a top wall.

As a result, the concrete retaining wall of the retaining wall forms a retaining wall together with the foundation pillar by entering the concave portion of the foundation pillar, and furthermore, the beam member and the foundation pillar, the supporting pillar, and the mountain are formed. A substantially rectangular skeleton is formed by the stop wall, and a strut member is passed over a diagonal line of the rectangular skeleton, so that the base pillar is prevented from falling down to the lower premises side, which is extremely difficult. Can form a solid retaining wall,
Also, since the retaining wall can be excavated by simply attaching a sheet pile to the upper site side of the pre-installed foundation pillar, the excavated area at the construction stage and the amount of backfill after construction are extremely small. can do. Furthermore, the height of the retaining wall can be adjusted by the length of the foundation pillar, and the anchor part of the foundation pillar is reinforced with mortar to form a relatively high retaining wall. can do. Then, the strut member is installed so as to be inclined to the ground side between the upper end of the support pillar and the upper end of the foundation pillar, and as a result of the support pillar being exposed together with the strut member on the lower site side, the lower part This method is most suitable when the landowner on the site uses the mountain retaining method.

According to a third aspect of the present invention, in a case where two adjacent sites are arranged in a stepwise manner, the earth retaining work is performed on the ground formed adjacent to the two sites. In a construction method, at a position separated by a predetermined width from the adjacent portion of the two sites to the lower site side, an appropriate gap is placed along the adjacent portion, and the height of the ridge to be formed is A plurality of first holes having a large depth are formed, and a predetermined gap is provided between the first holes and the lower premises, and a depth larger than the height of the ridge to be formed is also provided. A plurality of second holes having a hole are formed so as to be opposed to the first holes, and the inside of the first holes is reinforced with mortar so that the H-shaped steel base pillars are mutually recessed. It is built and fixed so as to face each other, and the mortar is The supporting columns made of H-section steel are erected and fixed so that these concave sides face each other by solidification, and then the lower site side from the adjacent portion is set at the height of the ridge to be formed. Until the ground pillars are excavated to form a ground, the first pillars are inserted into the ground pillar side of the adjacent foundation pillars in order, so that the foundation pillars and the support pillars are grounded. Exposure, and then, between the lower end of the support column and the upper end of the base column, an H-shaped steel member is installed so as to be inclined toward the retaining wall, Supporting the foundation pillar by fixing both ends to the foundation pillar and the supporting pillar, respectively, and then installing a second sheet pile on the ground side between the supporting pillars adjacent to each other, Formwork installed on the side facing the lower site of the support pillar Forming a space between the formwork and the sheet pile, forming a concrete wall for pouring concrete into the space and retaining the ground, and forming the concrete form after the formation of the concrete wall. Was removed, and furthermore, the top end of the concrete was cast with a cover stone concrete to cover it, and earth and sand were buried between the first sheet pile and the second sheet pile to form a retaining wall. It is characterized by the following.

As a result, the retaining wall is formed by the concrete wall penetrating into the concave portion of the supporting column and forming a retaining wall together with the supporting column. A substantially rectangular skeleton is formed, and the strut member is passed over the diagonal line of the rectangular skeleton, so that the base pillar is prevented from falling down to the lower site side,
Since a very solid retaining wall can be formed, and the retaining wall can be excavated only by attaching a sheet pile to the upper site side of the pre-installed foundation pillar, The excavation area and the amount of backfill after construction can be extremely reduced. Furthermore, the height of the retaining wall can be adjusted by the length of the foundation pillar, and the anchor part of the foundation pillar is reinforced with mortar to form a relatively high retaining wall. can do. And
The strut members are installed so that they are inclined to the ground side between the upper end of the support pillar and the upper end of the foundation pillar, and are covered by concrete walls. Most suitable for the case.

According to a fourth aspect of the present invention, in the case where two adjacent sites are arranged in a stepwise manner, the earth retaining work is performed on the ground formed adjacent to the two sites. In the method, at a position separated by a predetermined width on the upper site side with respect to the adjacent portion of the two sites, an appropriate gap is placed along the adjacent portion, and A plurality of first holes having a depth greater than the height are formed, and the inside of the first holes is solidified with mortar so that the H-shaped steel base pillars are arranged so that the concave portions thereof face each other. While fixing and mounting, a plurality of second holes are excavated so as to face the first hole with a predetermined gap on the lower site side, and the inside of the second hole is mortared. By bolstering, the support columns made of H-section steel can be And then fix it, and then excavate from the upper site side to the lower site side of the foundation pillar to form the ground until it matches the height of the dam to be formed. A first sheet pile is attached to the ground side of the adjacent base pillar so as to be attached to the base pillar, and the base pillar and the support pillar are exposed on the ground surface. An H-shaped steel strut member is installed so as to incline from the ground side to the lower site side between the lower end of the foundation pillar, and both ends of the strut member are respectively attached to the foundation pillar and the support pillar. At the same time, a beam made of H-shaped steel is installed substantially horizontally on the upper end of the base column and the upper end of the support column, and both ends of the beam are connected to the support column and the base column, respectively. To form a U-shaped frame with these support columns, foundation columns and beams. After supporting the foundation pillar by doing, a second sheet pile is installed on the ground side between the support pillars adjacent to each other, and a formwork is formed on the side facing the lower site of the support pillar. Is installed, concrete is poured into a space formed between the formwork and the concave portion of the support column and the second sheet pile to form a concrete wall for retaining the ground. After the formation of the concrete wall, remove the formwork,
Further, it is preferable that the heave stone concrete is cast at the upper end portion of the concrete wall to cover the concrete wall, and earth and sand is buried between the first sheet pile and the second sheet pile to form a retaining wall. It is a feature.

As a result, the retaining wall is formed such that the concrete wall enters the concave portion of the supporting column and forms a retaining wall together with the supporting column, and furthermore, the beam, the basic column and the supporting column form a substantially rectangular shape. Since a skeleton having a shape is formed and a strut member is passed over the diagonal line of the rectangular skeleton, a solid dam wall can be formed. In addition, the base pillars pass through the beams and the struts, and the support pillars prevent the lower pillars from falling down, so that a very solid retaining wall can be formed. Since the retaining wall only needs to be excavated with a sheet pile on the lower site side of the pre-installed foundation pillar, the excavation area at the construction stage and the amount of backfill after construction can be extremely reduced. it can. Furthermore, since the height of the retaining wall can be adjusted by the length of the foundation pillar and the supporting pillar, and the anchor parts of the foundation pillar and the supporting pillar are mortared with mortar. , Relatively high retaining walls can be formed. Then, the support pillars facing the lower site side are covered by the concrete wall, which is most suitable when the land owner on the upper site performs the landslide protection method.

According to a fifth aspect of the present invention, when two sites adjacent to each other are arranged in a step-like manner, the site protection works are performed on the ground formed at the adjacent portion between the two sites. In a construction method, at a position separated by a predetermined width from the adjacent portion of the two sites to the lower site side, an appropriate gap is placed along the adjacent portion, and the height of the ridge to be formed is A plurality of first holes having a large depth are drilled, and the inside of the first holes is reinforced with a mortar, so that the H-shaped steel base pillars are built so that the concave portions thereof face each other. Then, a plurality of second holes are excavated on the lower site side of the foundation pillar so as to face the first hole with a predetermined gap therebetween.
By fixing the inside of the hole with mortar, the support pillar made of H-section steel is erected and fixed so that these concave sides face each other, and then the lower premises side from the upper premises side of the foundation pillar is fixed. The excavation is performed by inserting a sheet pile on the ground side of the adjacent foundation pillars sequentially while excavating to form a foundation until the height of the foundation pillar to be formed is adjusted. And exposing the support pillar to the ground surface, connecting the upper end of the support pillar and the upper end of the foundation pillar by a substantially horizontally laid beam, and connecting the beam to the foundation pillar. And a pair of strut members, each made of H-section steel, are connected obliquely between the base column and the supporting column, and the base column is supported, and then a formwork is formed between the adjacent basic columns. Is installed, the formwork and the concave portion of the foundation pillar and the A space is formed by the plates, concrete is poured into the space to form a concrete wall for retaining the ground, and after forming the concrete wall, the formwork is removed, and then the concrete wall is removed. The headstone is cast at the upper end and covered to form a retaining wall.

As a result, a substantially rectangular skeleton is formed by the beam, the basic pillar, and the supporting column, and the beam, the basic pillar, and the supporting side column are formed in the rectangular skeleton. Each of the pair of tension members is connected obliquely to support the foundation pillar, and since a concrete wall exists between the recesses of the foundation pillar, a solid retaining wall is formed. be able to. In addition, the base pillars pass through the beams and struts, and the support pillars and the dimples prevent the fall to the lower site.
A very solid retaining wall can be formed, and the retaining wall can be excavated only by attaching a sheet pile to the lower site side of the pre-installed foundation pillar. The excavation area and the amount of backfill after construction can be extremely reduced. Furthermore, since the height of the retaining wall can be adjusted by the length of the foundation pillar and the supporting pillar, and the anchor parts of the foundation pillar and the supporting pillar are mortared with mortar. , Relatively high retaining walls can be formed. And, since the supporting pillars are exposed on the lower site side, it is most suitable when the landowner on the lower site side executes the landslide method.

According to a sixth aspect of the present invention, in the case where two sites adjacent to each other are arranged in a step-like manner, a site protection work is performed on a site formed adjacent to the two sites. In a construction method, at a position separated by a predetermined width from the adjacent portion of the two sites to the lower site side, an appropriate gap is placed along the adjacent portion, and the height of the ridge to be formed is A plurality of first holes having a large depth are drilled, and the inside of the first holes is reinforced with a mortar, so that the H-shaped steel base pillars are built so that the concave portions thereof face each other. On the other hand, a plurality of second holes are excavated on the lower site side of the foundation pillar so as to face the foundation pillar at a predetermined gap while fixing the second pillar.
By fixing the inside of the hole with mortar, the support pillar made of H-section steel is built and fixed so that these recesses face each other, and the lower premises side from the upper premises side of the foundation pillar, Until it fits with the height of the ridge to be formed, it is excavated to form a ground, and is inserted in such a manner that a first sheet pile is attached to the ground side of the adjacent foundation pillars sequentially, and then Installing a second sheet pile on the ground side between the support columns adjacent to each other,
Adding a formwork to the side facing the lower site of the support pillar,
A space is formed between the formwork and the concave portion of the support column and the second sheet pile, and the upper end of the support column and the upper end of the base column are placed substantially horizontally. A pair of strut members made of H-shaped steel are connected obliquely between the beam material and the base column and the supporting side column, and the base column is supported. After
Concrete is poured into the space to form a concrete wall for retaining the ground, and after the formation of the concrete wall, the formwork is removed. Covered
Further, earth retaining material or the like is buried between the first sheet pile and the second sheet pile to form a retaining wall.

As a result, a substantially rectangular skeleton is formed by the beam, the basic pillar, and the supporting column, and the skeleton is formed between the beam, the basic column, and the supporting column in the rectangular skeleton. Since the foundation pillars are supported by connecting a pair of strut members obliquely, and since concrete walls are present in the recesses of these support pillars, it is possible to form a solid retaining wall. it can. Moreover, the foundation pillar is a beam material,
Through the struts, the support pillars and the dike floor will prevent the fall to the lower site side, so that a very solid retaining wall can be formed.
Since the excavation only needs to be performed by attaching a sheet pile to the lower site side of the pre-installed foundation pillar, the excavated area at the construction stage and the backfill amount after the construction can be extremely reduced. Furthermore, since the height of the retaining wall can be adjusted by the length of the foundation pillar and the supporting pillar, and the anchor parts of the foundation pillar and the supporting pillar are mortared with mortar. , Relatively high retaining walls can be formed. Then, the supporting pillars facing the lower site side are covered with concrete walls, which is most suitable when the land owner on the upper site side performs the landslide protection method.

According to a seventh aspect of the present invention, in a case where two sites adjacent to each other are arranged in a step-like manner, a site retaining work is performed on a ground formed at an adjacent portion between the two sites. In a construction method, at a position separated by a predetermined width from the adjacent portion of the two sites to the lower site side, an appropriate gap is placed along the adjacent portion, and the height of the ridge to be formed is A plurality of first holes having a large depth are drilled, and the inside of the first holes is reinforced with a mortar, so that the H-shaped steel base pillars are built so that the concave portions thereof face each other. Fixing, and then excavating from the upper site side of the foundation column to the lower site side to the height of the dam to be formed, and sequentially excavating the foundation column to form a ground pile. While inserting a sheet pile on the ground side of A plurality of second holes are excavated on the lower site side of the foundation pillar so as to face the first holes with a predetermined gap therebetween, and the inside of the second holes is reinforced with mortar. In this way, a support column made of H-shaped steel is erected and fixed so that these recesses face each other, and the upper end of the support column and the upper end of the base column are placed substantially horizontally. The base column is supported by connecting a plurality of H-shaped steel strut members arranged so as to be staggered alternately between the base column and the support column while being connected by a material. In addition, a formwork is installed between the adjacent base pillars, a space is formed between the formwork and the sheet pile, concrete is poured into the space, and the earth retaining of the ground is performed. Form a concrete wall to do and after forming the concrete wall Deprived serial formwork, then coated with Da設 the Kasaishi concrete upper portion of the concrete wall, is characterized in that the formation of the Yamadome wall.

As a result, a substantially rectangular skeleton is formed by the beam, the base pillar and the support pillar, and a plurality of struts are provided between the base pillar and the support pillar in the rectangular framework. Are arranged so as to be alternately inclined and connected to support the foundation column, and since there is a concrete wall between recesses of this foundation column,
A solid retaining wall can be formed. In addition, the base pillar passes through the beam material or the strut material, and the support pillar prevents the lower pillar from falling down, so that a very solid retaining wall can be formed. Also, the retaining wall is
It can be formed by excavating simply by attaching a sheet pile to the lower site side of the pre-installed foundation pillar, so the excavation area at the construction stage and the amount of backfill after construction can be extremely reduced . Furthermore, since the height of the retaining wall can be adjusted by the length of the foundation pillar and the supporting pillar, and the anchor parts of the foundation pillar and the supporting pillar are mortared with mortar. , Relatively high retaining walls can be formed. And as a result of the support pillar and the strut being exposed on the lower site side, it is most suitable when the land owner on the lower site side performs the landslide method.

According to the present invention, in a case where two sites adjacent to each other are arranged in a step-like manner, a site retaining work is performed on a ground formed at an adjacent portion between the two sites. In a construction method, at a position separated by a predetermined width from the adjacent portion of the two sites to the lower site side, an appropriate gap is placed along the adjacent portion, and the height of the ridge to be formed is A plurality of first holes having a large depth are drilled, and the inside of the first holes is reinforced with a mortar, so that the H-shaped steel base pillars are built so that the concave portions thereof face each other. Fixing, and then excavating from the upper site side of the foundation column to the lower site side to the height of the dam to be formed, and sequentially excavating the foundation column to form a ground pile. While inserting a sheet pile on the ground side of Excavating a plurality of second holes on the lower site side of the foundation pillar so as to face the foundation pillar with a predetermined gap therebetween, and consolidating the inside of the second holes with mortar. In this way, a support member made of H-section steel is erected and fixed so that these recesses face each other, and a beam material in which the upper end portion of the support column member and the upper end portion of the base column member are placed substantially horizontally. While supporting the base column by connecting a plurality of H-shaped steel strut members arranged so as to be staggered alternately between the base column and the support side column, Next, a second sheet pile is installed on the ground side between the support pillars adjacent to each other, and a formwork is installed on the side facing the lower site of the support pillars, and the formwork and the A space is formed between the sheet pile and the sheet pile, and concrete flows into the space. To form a concrete wall for retaining the ground, and removing the formwork after the formation of the concrete wall, and forming the concrete retaining wall so as to cover lower end portions of the foundation pillar and the supporting pillar, respectively. Of the concrete wall, and furthermore, heave stone concrete is cast and covered on the upper end of the concrete wall, and earth and sand are backfilled between the first sheet pile and the second sheet pile. And forming a retaining wall.

As a result, the retaining wall forms a substantially rectangular skeleton by the beam material, the base column, and the support column, and the base column and the support side column are formed in the rectangular skeleton. The foundation pillar is supported by connecting a plurality of strut members arranged so as to be alternately inclined between them, and since a concrete wall is present in the recess of the support pillar, a solid retaining wall is provided. Can be formed. Moreover,
The base pillar passes through the beams and struts, and the support pillar and the retaining floor prevent it from falling down to the lower premises side, so that a very solid retaining wall can be formed,
In addition, since the retaining wall can be excavated simply by attaching a sheet pile to the lower site side of the pre-installed foundation pillar, the excavated area at the construction stage and the amount of backfill after construction are extremely small. can do. Furthermore, since the height of the retaining wall can be adjusted by the length of the foundation pillar and the supporting pillar, and the anchor parts of the foundation pillar and the supporting pillar are mortared with mortar. , Relatively high retaining walls can be formed. Then, the supporting pillars and the strut members facing the lower site side are covered by the concrete wall, which is most suitable when the landowner on the upper site side executes the mountain retaining method.

According to a ninth aspect of the present invention, the sheet pile is a horizontal sheet pile.

As a result, the horizontal sheet piles can be stretched without any gap in conformity with the shape of the site, and can be applied to a site having a relatively high groundwater level.

According to a tenth aspect of the present invention, the sheet pile is a vertical sheet pile, and in order to support the vertical sheet pile, a transverse piece made of a shaped steel such as an equilateral mountain shape is provided between base columns facing each other. Is laid horizontally.

As a result, like the horizontal sheet piles, the vertical sheet piles can be stretched without gaps in conformity with the shape of the site, and can be applied to a site with a relatively high groundwater level. The present invention described in claim 11 is characterized in that it is a steel plate such as a spread iron plate.

As a result, the present invention is suitable for a site with a relatively good condition such as a low groundwater level in the ground. If oil is applied to the steel sheet in advance, the concrete cast to form the retaining wall can be pulled out gently when the strength of the concrete reaches a predetermined value. Reduction can be achieved.

According to a twelfth aspect of the present invention, the concrete wall is formed of a PC board. As a result, the construction period can be significantly reduced by using a PC board manufactured in advance at the factory.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for constructing a landslide for constructing a residential land or the like according to a first embodiment of the present invention will be described with reference to FIGS.
2 will be sequentially described. First, FIG. 1 is a perspective view showing a site such as a residential land constructed using a landscaping construction method for constructing a residential land according to the first embodiment of the present invention. The site C is configured, for example, by arranging three steps in a staircase shape. If the upper site 1 is the site A, the site B constitutes the lower site 2, and if the upper site 1 is the gap B, the site C is the lower site 2. The ground 4 formed in the adjacent portion 3 between the base 1 and the lower site 2 is stopped by a stop wall 5 formed by the stop construction method according to the present embodiment.

The retaining wall 5 has a first hole 6 having a depth greater than the height of the retaining to be formed along the adjacent portion 3.
H that is built and fixed so that the recesses face each other
A plurality of base pillars 7 made of shaped steel, and the upper ends of the second holes drilled toward the lower premises 2 with respect to the base pillars 7 are slightly protruded from the surface of the lower premises 2, and the recesses are opposed to each other. A plurality of support pillars 9 made of H-shaped steel and fixed in such a manner as described above, and each of the support pillars 9 is inclined toward the ground 4 between the upper end of the support pillar 9 and the upper end of the foundation pillar 7. A strut member 10 made of an H-shaped steel and a sheet pile 11 attached to the ground 4 side of the foundation pillars 7 adjacent to each other, and formed between the sheet pile 11 and a concave portion of the foundation pillar 7. Concrete wall 12 made of concrete, and bottom plate 1 formed so as to cover the lower end of base column 7 and the whole of support column 9.
3 and a heave stone concrete 14 cast on an upper part of a concrete wall 12 together with an upper part of a foundation pillar 7 and a sheet pile 11.

Next, referring to FIGS. 2 to 12, a description will be given of a procedure according to the landslide construction method for building a residential land or the like according to the first embodiment.

First, as shown in FIG. 2, a predetermined width W extends from the adjacent portion 3 of the upper site 1 and the lower site 2 to the lower site 2 side.
(The predetermined width W is separated from the base pillar 7 by a width necessary for the construction work of the sheet pile 17 described later, that is, in this embodiment, corresponds to a width between the adjacent portion 3 and the base pillar 7). , A plurality of first holes 15 having a depth greater than the height of the ridges to be formed are formed at appropriate intervals from each other along the adjacent portion 3.

Next, as shown in FIG. 3, the inside of the first hole 6 is fixed with a mortar 16 so that the H-shaped steel base pillars 7 are erected so that the concave portions 7a thereof face each other. I do.

Next, as shown in FIGS. 4 and 5, the upper site 1 side of the foundation pillar 7 (adjacent portion 3 in this embodiment).
The lower site 2 side is excavated to form a ground until it conforms to the height of the dam to be formed. , A horizontal sheet pile) to expose the foundation pillars 7 on the surface of the lower site 2.

Next, as shown in FIG. 6, a plurality of base columns 7 are arranged on the lower site 2 side so as to face the lower site 2 with a predetermined gap Y with respect to the first hole 6. By excavating the second holes 8 and solidifying the inside of the second holes 8 with a mortar 16, the support columns 9 made of H-section steel are formed in the recesses 9.
A is fixed so that they face each other and their upper ends slightly protrude from the surface of the lower site 2.

Next, as shown in FIG. 7, between the upper end of the supporting column 9 and the upper end of the base column 7, an H-shaped steel strut member 10 is inclined so as to incline toward the ground 4 side. The base column 7 is supported by installing and fixing both ends of the strut member 10 to the base column 7 and the support column 9, respectively. The fixing of the strut member 10 to the base column 7 is usually performed with a fastening tool such as a bolt, and the fixing to the support column 9 is usually performed by welding.

Thereafter, as shown in FIG. 8, a formwork 18 is installed between the adjacent base pillars 7, and the formwork 18 is formed.
And a concave portion 7A of the foundation pillar 7 and a sheet pile 17 to form a space portion 19, concrete is poured into the space portion 19 to form a concrete wall 12 for retaining the ground, and after the formation of the concrete wall 12, The formwork 18 is removed, and the work holes for sheet pile installation remaining on the upper site 1 side of the concrete wall 12 are filled back (see FIGS. 9 and 10).

Next, as shown in FIG. 11, a bottom plate 13 is formed so as to cover the lower end portion of the foundation column 7 and the entire supporting column 9, and further, as shown in FIG. At the upper end of the wall 12, together with the foundation pillar 7, the sheet pile 11, and the strut member 10, a cap stone concrete 14 is cast and covered to form the retaining wall 5.

As a result, the retaining wall 5 is formed such that the concrete wall 12 enters the concave portion 7a of the base column 7 to form a retaining wall together with the base column 7, and the base column 7 is a strut member. 10, the supporting column 9 and the retaining plate 13
As a result, falling down to the lower site 2 side is prevented, and a very solid retaining wall can be formed. In addition, the retaining wall 5 is connected to the upper site 1 of the pre-installed foundation pillar 7. Since the excavation only needs to be performed with the sheet pile 11 attached to the side, the excavation area at the construction stage and the backfill amount after the construction can be extremely reduced.

Further, the height of the retaining wall 5 can be adjusted by the length of the foundation pillar 7, and the foundation pillar 7
Since the anchor portion is fixed by mortar 16, a relatively high retaining wall can be formed.

The strut member 10 is installed so as to be inclined toward the ground 4 between the upper end of the support pillar 9 and the upper end of the foundation pillar 7. As a result of the body 9 being exposed on the lower premises 2 side, it is most suitable when the landowner on the lower premises 2 implements the shoring method.

FIGS. 13 to 17 show a second embodiment according to the present invention. Similar to the first embodiment, when two sites adjacent to each other are arranged in a stepwise manner, the two sites are adjacent to each other. First, as shown in FIG. 13, a predetermined width W extends from an adjacent portion 3 between the upper site 1 and the lower site 2 to the lower site 2 as shown in FIG. At the separated position, a plurality of first holes 6 having a depth greater than the height of the ridges to be formed are formed at appropriate intervals from each other along the adjacent portion 3, and a plurality of first holes 6 are formed. A predetermined gap Y is placed on the lower site 2 side from the first hole 6, and a second hole 8 having a depth greater than the height of the ridge to be formed is formed facing the first hole 6. Set up.

Next, as shown in FIG. 14, the inside of the first hole 6 is fixed with a mortar 16 so that the H-shaped steel base pillars 7 are erected and fixed so that the recesses 7a thereof face each other. At the same time, the inside of the second hole 8 is reinforced with a mortar 16 to form the H-shaped steel support column 9
These concave portions 9a are erected and fixed so as to face each other similarly to the base pillar 7.

Next, as shown in FIG. 15, a predetermined width W from the upper site side of the foundation pillar 7 to the foundation pillar 7 (the predetermined width W is equal to the width of the laying work of the sheet pile 11 to be described later from the foundation pillar 7). That is, in the present embodiment, the lower site 2 side is excavated until the height of the ground stop to be formed is adjusted to include the ground 4 corresponding to the width between the adjacent portion 3 and the foundation pillar 7). While forming a sheet pile 11 which is a horizontal sheet pile in the ground pile 7 side of the adjacent foundation pillars 7 sequentially, and the foundation pillars 7 and the support pillars 9 are attached to the ground surface on the lower site 7 side. Exposure to

Next, although not shown, a mold is installed between the adjacent base pillars 7 in the same manner as in the first embodiment, and the recesses 7a and the sheet piles of the mold and the base pillars 7 are provided. 11 and a concrete wall 12 for pouring concrete into the space and retaining the ground 4 at the ground.
After the formation of the concrete wall 12, the formwork is removed, and the work hole for the sheet pile installation remaining on the upper site 1 side of the concrete wall 12 is filled back (see FIG. 16).

Before or after the installation of the formwork,
Beam 2 between the upper end of the base pillar 7 and the upper end of the support pillar
2 and fix both ends of the beam member 22 to the base column 7 and the support column 9 using fasteners such as bolts, respectively, and a lower end of the support column 9 and the base column 7. An H-shaped steel strut member 10 is installed so as to incline to the ground 4 side between the upper end of the strut and the both ends of the strut member 10 are fixed to the base column 7 and the support column 9, respectively. Supports the base pillar 7.

The fixing of the both ends of the tension member 10 to the base column 7 and the supporting column 9 is the same as in the first embodiment.

Next, a dike floor 13 is formed in front of the concrete wall 12 so as to cover the lower ends of the foundation pillar 7 and the support pillar 9, respectively. The headstone concrete 14 is cast and covered, including the fixing portion 7 and the fixing member 10, to form the retaining wall 5 (see FIG. 17).

As a result, the retaining wall 5 according to the second embodiment is configured such that the concrete wall 12 enters the concave portion 7a of the foundation pillar 7 and forms a retaining wall together with the foundation pillar 7. , A substantially rectangular skeleton is formed by the beam material, the base column 7, the support column 9, and the gusset bottom wall 13, and the strut member 10 is passed over the diagonal line of the rectangular skeleton. Since the body 7 is prevented from falling down to the lower site 2 side, a very solid retaining wall can be formed.

Further, the retaining wall 5 can be formed by excavating enough to secure a working width sufficient to attach the sheet pile 11 to the upper site 1 side of the pre-installed foundation pillar. The excavated area at the construction stage and the amount of backfill after construction can be extremely reduced.

Further, the height of the retaining wall 5 can be adjusted by the length of the foundation pillar 7, and the foundation pillar 7
Since the anchor portion is fixed by mortar 16, a relatively high retaining wall can be formed.

The strut member 10 is installed so as to be inclined toward the ground 4 between the upper end of the support pillar 9 and the upper end of the base pillar 7. As a result of the body 9 being exposed on the lower premises 2 side, it is most suitable when the landowner on the lower premises 2 implements the shoring method.

FIG. 18 shows a third embodiment of the present invention. When compared with the second embodiment, the second sheet pile 11 is located on the ground 4 side between the supporting columns 9 adjacent to each other.
With installing a _1, and additionally provided a mold 18 on the side facing the lower grounds second support pillar 9, formed in this mold 18 and the recess 9A and the second sheet pile 11 ₁ of the support pillar 9 Space part 1
9 ₁ to perform the earth retaining the natural ground 4 by pouring concrete to form a concrete wall 12 ₁ and backfilled gravel or the like between the second sheet pile 11 ₁ and sheet pile (first sheet pile) 11 The difference is that, in this connection,
The hessian concrete 14 is provided on the upper end side of the supporting column 9,
In addition, the concrete wall 12 also serves as the ridge bottom 21.

As a result, the concrete retaining wall 12 of the retaining wall 5 forms a retaining wall together with the support column 9 by the concrete wall 12 entering the recess 9A of the support column 9, and furthermore, the beam member 22 and the foundation column A substantially rectangular skeleton is formed by the support pillar 9 and the support pillar 9, and the strut member 10 is arranged to pass over the diagonal line of the rectangular framework, thereby preventing the base pillar 7 from falling down to the lower site side. As a result, a very solid retaining wall can be formed, and the retaining wall 5 is provided with a workplace where only a sheet pile 11 is attached to the upper site 1 side of the pre-installed foundation pillar 7. Since it is sufficient to perform excavation for securing, the excavated area at the construction stage and the backfill amount after construction can be extremely reduced. Further, the height of the retaining wall 5 can be adjusted by the length of the foundation pillar 7, and the anchor portion of the foundation pillar 7 is reinforced with the mortar 16, so that the height is relatively high. A retaining wall can be formed. The strut member 10 is installed so as to be inclined toward the ground 4 between the upper end of the support pillar 9 and the upper end of the foundation pillar 7, and is covered by the concrete wall 12. It is most suitable when the landowner on one side constructs the dike.

FIGS. 19 to 22 show a fourth embodiment according to the present invention. Similar to the first to third embodiments, when two adjacent sites are arranged in a stepwise manner, both sites are arranged. First, as shown in FIG. 19, a predetermined area is formed from an adjacent portion 3 of an upper site 1 and a lower site 2 to a lower site 2 as shown in FIG. At the position separated by the width W (see FIG. 2 etc.), the adjacent portion 3
A plurality of first holes 6 having a depth greater than the height of the ridges to be formed are formed at appropriate intervals from each other so as to conform to By solidifying the base column 7 made of H-section steel, its concave portion 7a is formed.
Mount and fix so that the sides face each other.

Next, from the adjacent part 3 side, the lower site 2 side is excavated until it matches the height of the ridge to be formed.
Is formed, and a sheet pile 11 as a horizontal sheet pile is sequentially inserted into the adjacent base pillars 7 on the ground 4 side.

On the other hand, a predetermined gap Y with respect to the
A plurality of second holes 8 are excavated on the lower site 7 side so as to face each other (see FIG. 14 and the like), and the inside of the second holes 8 is solidified with mortar to support the H-section steel. Pillar 9
And fix it.

Next, from the upper site 1 side of the foundation pillar 7 to the lower site 2 side, until it matches the height of the dam to be formed.
Basic pillars 7 that are adjacent to each other while excavating to form ground 4
The sheet pile 11 (first sheet pile), which is a horizontal sheet pile, is inserted into the side of the ground 4 so as to be attached, and the foundation pillar 7 and the support pillar 9 are exposed on the ground surface.

Next, between the upper end of the supporting column 7 and the lower end of the foundation column 9, an H-shaped steel member 10 is installed so as to incline from the ground 4 to the lower site 2 side. At the same time, both ends of the tension member 10 are fixed to the side of the base column 7 and the support column 9, respectively, and a beam member made of an H-shaped steel is formed substantially horizontally on the upper end of the base column 7 and the upper end of the support column 9. By mounting the beam 22 and fixing both ends of the beam 22 to the support side column 9 and the base column 7, respectively, the support column 9, the base column 7 and the beam 22 form a U-shaped frame. The body is formed to support the foundation pillar 7.

[0062] Thereafter, as shown in FIG. 20, as well as installing a second sheet pile 11 ₁ to the natural ground 4 side in between the support pillar 9 adjacent to each other, facing the lower grounds second support pillar 9 by installing formwork 18 to the side, the mold 18 and the recess 9A and the second pouring in earth retaining the natural ground 4 concrete in the space portion 19 ₁ formed between the sheet pile 11 ₁ of the support pillar 9 forming a concrete wall 12 ₁ to perform (see FIGS. 21 and 22), the mold 1 after the formation of the concrete wall 12 ₁
Deprived 8, further to the upper part of the concrete wall 12 _1, the upper end portion of the support pillar 9 and bracing member 10,
The heave stone concrete 14 is cast and covered to complete the retaining wall 5.

[0063] Consequently, Yamadome wall 5, a concrete wall 12 ₁ is made substantially rectangular framework with the beam member 22 and the base pillar 7 and the support pillar 9, bracing diagonals of the rectangular framework Since the material 10 is passed over and surrounded to form a retaining wall, the solid retaining wall 5 can be formed.

Moreover, the base column 7 passes through the beam member 22 and the strut member 10, and is prevented from falling down to the lower site 2 by the support column member 9, thereby forming a very solid retaining wall. In addition, the retaining wall 5 can be excavated only by attaching the sheet pile 17 to the lower site 2 side of the pre-installed foundation pillar 7. Subsequent backfilling can be very small. Further, the height of the retaining wall 5 can be adjusted by the lengths of the base pillars 7 and the support pillars 9, and
Since the anchor portions of the base pillars 7 and the support pillars 9 are rooted with mortar, a relatively high retaining wall can be formed.

Then, the support pillar 9 facing the lower site 2 side
Each concrete wall 12 were to be covered by _1, it is most suitable when the upper grounds 1 side landlord to applying a Yamadome method.

FIG. 23 shows a fifth embodiment of the present invention, in which the strut member 10 (FIG. 1) of the second embodiment is used.
6), between the beam member 22 in which the upper end of the support column 9 and the upper end of the base column 7 are laid horizontally and connected to each other, and between the base column 7 and the support column 9. Are adopted in a pair.

It is preferable that the pair of struts 10 be connected to the foundation column 7 and the supporting column 9 during the excavation of the ground 4. This is because the connecting operation of the struts 10 can be performed at a lower place for the operator.

As a result, a substantially rectangular skeleton is formed by the beam member 22, the basic pillar 7 and the supporting pillar 9, and the beam member 22, the basic pillar 7 and the supporting pillar are formed in the rectangular framework. 9, a pair of strut members 10 are connected obliquely to support the base column 7, and a concrete wall 12 exists between the concave portions 7A of the base column 7. As a result, a firm mountain stop wall 5 can be formed.

The base column 7 is composed of the beam member 22 and the strut member 1.
0, the support pillar 9 prevents the falling down to the lower site 2 side, so that a very solid retaining wall can be formed, and the retaining wall 5 is built in advance. Since it can be formed by excavating simply by attaching a sheet pile 17 to the lower site 2 side of the base pillar 7, the excavated area at the construction stage and the backfill amount after construction can be extremely reduced. .

Further, the height of the retaining wall 5 can be adjusted by the lengths of the base pillars 7 and the support pillars 9, and the anchor portions of the base pillars 7 and the support pillars 9 are mortar 16 , The relatively high retaining wall can be formed. And as a result of the support pillar 9 being exposed on the lower site 2 side, it is most suitable when a landowner on the lower site 2 constructs a landslide method.

FIG. 24 shows a sixth embodiment according to the present invention.
Instead of (see FIG. 19), a beam member 22 in which the upper end of the support column 9 and the upper end of the base column 7 are connected horizontally and substantially horizontally,
This embodiment employs a pair of struts 10 for connecting the base pillar 7 and the support pillar 9 in an oblique manner.

It is preferable that the pair of struts 10 be connected to the base column 7 and the supporting column 9 during the excavation of the ground 4. This is because the connecting operation of the struts 10 can be performed at a lower place for the operator.

As a result, a substantially rectangular skeleton is formed by the beam 22, the basic pillar 7, and the support pillar 9, and the beam 22, the basic pillar 7, and the support pillar are formed in the rectangular framework. each has supported basic pillar 7 by connecting a pair of bracing members 10 on the slant between 9, moreover, the concrete wall 12 ₁ is present between the concave portion 9A between the support column member 9 As a result, a firm mountain stop wall 5 can be formed.

Further, the base pillar 7 passes through the beam member 22 and the strut member 10 and is prevented from falling down to the lower premises 2 by the support pillar member 9 to form a very solid retaining wall. In addition, since the retaining wall 5 can be excavated only by attaching the sheet pile 11 to the lower site 2 side of the pre-installed foundation pillar 7, the excavated area and the construction Subsequent backfilling can be very small.

Further, the height of the retaining wall 5 can be adjusted by the lengths of the base pillars 7 and the support pillars 9, and the anchor portions of the base pillars 7 and the support pillars 9 are mortar 16. , The relatively high retaining wall can be formed. Then, the supporting pillar 9 facing the lower site 2 is covered with the concrete wall 12, which is most suitable when the landowner on the upper site 1 constructs the landslide method.

FIG. 25 shows a seventh embodiment according to the present invention. In place of the tension member 10 in the fifth embodiment shown in FIG. 24, a support column 9 and a base column 7 are alternately provided. In this embodiment, a plurality of tension members 10 arranged and connected so as to be inclined are employed.

Preferably, the plurality of struts 10 are connected to the foundation column 7 and the supporting column 9 in order from the upper part to the lower part in the middle of the excavation of the ground 4.
This is because the connecting operation of the struts 10 can be performed at a lower place for the operator.

As a result, a substantially rectangular skeleton is formed by the beam member 22, the basic pillar 7, and the supporting pillar 9, and the skeleton between the basic pillar 7 and the supporting pillar 9 is formed in the rectangular framework. A plurality of struts 10 are arranged so as to be alternately inclined and connected to each other to support the base column 7, and further, the concrete wall 12 is provided between the recesses of the base column 7.
Is present, it is possible to form a firm retaining wall 5.

Further, the base column 7 passes through the beam member 22 or the strut member 10, and is prevented from falling down to the lower site 2 by the support column member 9, thereby forming a very firm retaining wall. can do.

Further, since the retaining wall 5 can be formed by excavating simply by attaching the sheet pile 17 to the lower site 2 side of the pre-installed foundation pillar 7, the excavation area at the construction stage and the excavation area can be reduced. The amount of backfill after construction can be extremely reduced.

Further, the height of the retaining wall 5 can be adjusted by the lengths of the base pillars 7 and the support pillars 9, and the anchor portions of the base pillars 7 and the support pillars 9 are mortar 16 , The relatively high retaining wall can be formed.

Since the support columns 9 and the upholstery members 10 are exposed on the lower site 2 side, it is most suitable when the landowner on the lower site 2 carries out the mountain retaining method.

FIG. 26 shows an eighth embodiment according to the present invention. In place of the tension member 10 in the third embodiment shown in FIG. 18, a support column 9 and a base column 7 are alternately arranged. In this embodiment, a plurality of tension members 10 arranged and connected so as to be inclined are employed.

Preferably, the plurality of struts 10 are connected to the foundation column 7 and the supporting column 9 from the upper part to the lower part in order during the excavation of the ground 4.
This is because the connecting operation of the struts 10 can be performed at a lower place for the operator.

As a result, the retaining wall 5 forms a substantially rectangular skeleton by the beam member 22, the basic pillar 7, and the support pillar 9, and in the rectangular skeleton, the base pillar 7 and the support pillar 9 are supported. The base column 7 is supported by connecting a plurality of strut members 10 arranged so as to be staggered between the column 9 and the concrete wall 12 ₁ between the recesses 9A of the support column 9. , A solid retaining wall can be formed.

Moreover, the base pillar 7 passes through the beam member 22 and the strut member 10 and is prevented from falling down to the lower site 7 side by the support pillar member 9, thereby forming a very solid retaining wall. can do.

The retaining wall 5 can be excavated only by attaching the sheet pile 17 to the lower site 2 side of the pre-installed foundation pillar 7. The amount of backfill can be made very small.

Further, the height of the retaining wall 5 can be adjusted by the lengths of the base pillars 7 and the support pillars 9, and the anchor portions of the base pillars 7 and the support pillars 9 are mortar 16 , The relatively high retaining wall can be formed.

Then, the support pillars 7 and the strut members 10 facing the lower site 7 are covered with the concrete wall 12, which is most suitable when the landowner on the upper site 1 carries out the landslide method.

FIGS. 27 to 29 show a case where the sheet pile 17 in the above embodiment is replaced with a vertical sheet pile instead of a horizontal sheet pile. In this case, the sheet pile 17 is provided between the opposing basic pillars 7 in the vertical direction as appropriate. A plurality of horizontal pieces 23 made of a shaped steel such as an equilateral mountain shape are suspended over the gap, and the sheet piles 11, which are vertical sheet piles, are sequentially laid so as to be supported by the horizontal pieces 23,
It is configured to hold earth in the ground.

As a result, similar to the sheet piles as horizontal sheet piles, the sheet piles 10 as vertical sheet piles can be stretched without gaps in conformity with the shape of the site, and the site is relatively high in groundwater level. Even adaptable.

FIG. 30 shows a sheet pile 1 in the above embodiment.
7 is a sheet pile 1 made of a steel plate, not a horizontal sheet pile or a vertical sheet pile.
1 is replaced.

As a result, the present invention is suitable for a site having a relatively good condition such as a low groundwater level at the ground 4. If oil is previously applied to the sheet pile 11 made of a steel plate or the like, when the strength of the concrete poured to form the retaining wall reaches a predetermined value, it can be pulled out gently, Cost can be reduced by reuse.

FIG. 31 and FIG. 32 show another embodiment of the base pillar 7 or the support pillar 9, and an H-shaped steel in which a reinforcing bar 24 such as a dowel bar or a differential bar is attached to the concave portions 7a, 9a. The presence of the reinforcing bar 24 allows groundwater to flow around even when the adhesion between the concrete wall 12 and the concave portion 7a of the foundation column 7 or the concave portion 9a of the support column 9 is low. Even so, the reinforcing bar 24 exerts a sealing function, so that water leakage from the ground 4 can be prevented.

FIG. 33 shows a concrete wall 12 made of a PC board. As a result of this construction, the use of a PC board pre-manufactured at a factory greatly reduces the construction period of the retaining wall. it can.

[0096]

As described above, in the retaining wall of the present invention, the concrete wall enters the recess of the foundation pillar or the supporting pillar, and forms a retaining wall together with the foundation pillar and / or the supporting pillar. Moreover, the foundation pillar is prevented from falling down to the lower premises side by the support pillar or the retaining floor due to the existence of the strut member, so that a very solid retaining wall can be formed. .

Further, since the retaining wall can be excavated only by attaching a sheet pile to the upper site side of the pre-installed foundation pillar, the excavated area at the construction stage and the backfill amount after construction are reduced. Can be very low.

Further, the height of the retaining wall can be adjusted by the length of the foundation pillar, and the anchor portion of the foundation pillar or the support pillar is mortared. Relatively high retaining walls can be formed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a retaining wall showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a step of excavating a first hole in FIG.

FIG. 3 is an explanatory view of a step of erection of a foundation pillar in a first hole in FIG. 2;

FIG. 4 is an explanatory view of a step of laying a sheet pile after the foundation pillar is erected in FIG. 3;

FIG. 5 is an explanatory view of a step of laying a sheet pile, showing a state in which all predetermined sheet piles are laid.

FIG. 6 is an explanatory view of a step of laying a sheet pile and a step of laying a support pillar in a second hole.

FIG. 7 is an explanatory view of a step of laying a strut member.

FIG. 8 is a partial cross-sectional perspective view showing a state in which a mold is similarly laid.

FIG. 9 is a partially sectional perspective view showing a state where a concrete wall is formed in a space between the sheet pile and the formwork.

FIG. 10 is a plan view of FIG. 9;

FIG. 11 is a partial cross-sectional perspective view showing a state in which a sill bottom plate is laid in FIG. 9;

FIG. 12 is a perspective view, partly in section, showing a state in which hesseki concrete is applied.

FIG. 13 shows a second embodiment of the present invention,
It is explanatory drawing of the process of excavating 1st and 2nd hole.

FIG. 14 is an explanatory diagram of a step of similarly laying a base pillar and a support pillar in the first and second holes, respectively.

FIG. 15 is an explanatory diagram of a step of laying a beam and a strut after excavating the ground in the same manner.

FIG. 16 is a partial cross-sectional perspective view showing a state where a concrete wall and a cap stone are laid.

FIG. 17 is a vertical sectional view of FIG. 16;

FIG. 18 is the same longitudinal sectional view as FIG. 17 showing the third embodiment of the present invention.

FIG. 19 shows a fourth embodiment of the present invention,
It is an explanatory view of the process of digging the ground after laying a foundation pillar and a support pillar, and laying a beam, a strut, and a sheet pile.

FIG. 20 is a partial perspective view showing a state in which a mold is laid.

FIG. 21 is a partially sectional perspective view showing a state where a concrete wall is laid.

FIG. 22 is a longitudinal sectional view of FIG. 21;

FIG. 23 shows a fifth embodiment of the present invention,
FIG. 23 is the same longitudinal sectional view as FIG. 22.

FIG. 24 shows a sixth embodiment of the present invention.
FIG. 23 is the same longitudinal sectional view as FIG. 22.

FIG. 25 shows a seventh embodiment of the present invention,
FIG. 23 is the same longitudinal sectional view as FIG. 22.

FIG. 26 shows an eighth embodiment of the present invention;
FIG. 23 is the same longitudinal sectional view as FIG. 22.

FIG. 27 is an explanatory view of a step of laying a sheet pile when a vertical sheet pile is used as the sheet pile.

28 is a sectional view taken along the line AA in FIG.

FIG. 29 is a sectional view taken along line BB in FIG. 28;

FIG. 30 is an explanatory diagram of a step of laying a sheet pile when a steel sheet is used as the sheet pile.

FIG. 31 is a partially cutaway perspective view of a base column or a support column to which a reinforcing bar such as a dowel bar or a differential bar is attached.

FIG. 32 is a cross-sectional view of a retaining wall when the base pillar or the support pillar of FIG. 31 is used.

FIG. 33 is an explanatory diagram of a step of laying a PC board used as a concrete wall.

FIG. 34 is a partial sectional perspective view of a conventional gravity concrete retaining wall.

FIG. 35 is a partially sectional perspective view of a conventional L-shaped reinforced concrete retaining wall.

FIG. 36 is a partially sectional perspective view of a conventional leaning wall.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Upper site 2 Lower site 3 Adjacent part 4 Ground mountain 5 Retaining wall 6 First hole 7 Basic pillar 7a Recess 8 Second hole 9 Support pillar 9a Recess 10 Strut member 11 Sheet pile (first sheet pile) 11 ₁ second sheet pile 12, 12 ₁ concrete wall 13 gutter bottom 14 slab concrete 16 mortar 18 formwork 19, 19 ₁ space part 22 beam material 23 horizontal piece 24 steel bar

Claims (12)

[Claims] 1. A method for constructing a landslide at a site formed adjacent to both sites when two sites adjacent to each other are arranged in a step-like manner. At a position separated by a predetermined width from the adjacent part to the lower site side, a first gap having a depth larger than the height of the ridge to be formed is provided with an appropriate gap therebetween so as to be along the adjacent part. A plurality of holes are formed, and a root column made of H-section steel is formed by solidifying the inside of the first holes with mortar,
Embed and fix so that the concave side faces each other,
Next, excavating from the upper site side to the lower site side of the foundation pillar to the height of the ridge to be formed, excavating to form the ground, and sequentially forming the ground, the ground side of the adjacent foundation pillar. The foundation pillar is exposed on the ground surface by inserting a sheet pile into the base pillar, and then the foundation pillar is opposed to the first hole with a predetermined gap. A plurality of second holes are excavated on the lower site side, and the H-shaped steel support columns are erected and fixed by mortar in the second holes so that the concave portions thereof face each other. Then, the upper end of the supporting column is slightly protruded from the surface of the lower site, and an H-shaped steel is formed between the upper end of the supporting column and the upper end of the foundation column so as to be inclined toward the ground. A strut member is installed, and both ends of the strut member are respectively attached to the base pillar and the support pillar. While supporting the base pillar by fixing, a formwork is installed between the adjacent base pillars, and a space is formed by the formwork, the recess of the base pillar, and the sheet pile. Next, concrete is poured into the space to form a concrete wall for retaining the ground, and after the formation of the concrete wall, the form is removed, and then the lower end of the foundation pillar and Residential land, etc., characterized by forming a hill bottom so as to cover the whole of the support pillar, and furthermore, casting and covering a headstone concrete on an upper end portion of the hill wall to form a hill wall. Sankaku construction method for construction. 2. A leaping work method in which, when two adjacent premises are arranged in a step-like manner, a leaping work is performed on a ground formed at an adjacent portion of the two premises, At a position separated by a predetermined width from the adjacent part to the lower site side, a first gap having a depth larger than the height of the ridge to be formed is provided with an appropriate gap therebetween so as to be along the adjacent part. A plurality of second holes having a depth greater than the height of the ridge to be formed, with a predetermined gap provided on the lower site side from the first hole. A hole is formed so as to face the first hole, and the inside of the first hole is fixed with mortar to fix and fix the H-shaped steel base pillar so that its recesses face each other. By mortaring the inside of the second hole with mortar A support column made of H-section steel is erected and fixed so that these concave sides face each other.
From the upper site side to the lower site side of the foundation pillars, excavate to form a ground, and extrude a sheet pile on the ground side of the foundation pillars adjacent to each other while forming excavation until it conforms to the height of the dam to be formed. The foundation pillar and the supporting pillar are exposed to the ground surface by being inserted so as to be attached, and then, a mold is installed between the adjacent foundation pillars, and the mold and the foundation are installed. A space is formed by the concave portion of the pillar and the sheet pile, a concrete wall is formed to pour concrete into the space to retain the ground, and the formwork is removed after the formation of the concrete wall. A beam is installed between an upper end of the foundation pillar and an upper end of the support pillar, and both ends of the beam are fixed to the foundation pillar and the support pillar, and Slant toward the ground between the lower end and the upper end of the foundation pillar Uni established the H-steel bracing member, supporting the foundation pillar by both ends of the bracing member is secured to each of the basic pillar and the support pillar,
Next, a rock retaining bottom is formed so as to cover the lower end of each of the foundation pillar and the support pillar, and further, the top of the concrete wall is covered with a headstone concrete by casting.
A landslide construction method for building residential land, etc., characterized by forming a landslide wall. 3. A method for constructing a landslide at a site formed adjacent to the two sites when the two sites adjacent to each other are arranged in a step-like manner. At a position separated by a predetermined width from the adjacent part to the lower site side, a first gap having a depth larger than the height of the ridge to be formed is provided with an appropriate gap therebetween so as to be along the adjacent part. A plurality of second holes having a depth greater than the height of the ridge to be formed, with a predetermined gap provided on the lower site side from the first hole. A hole is formed so as to face the first hole, and the inside of the first hole is fixed with mortar to fix and fix the H-shaped steel base pillar so that its recesses face each other. By mortaring the inside of the second hole with mortar A support column made of H-section steel is erected and fixed so that these concave sides face each other.
A first sheet pile is attached to the ground side of the adjacent foundation pillars sequentially while excavating from the adjacent part to the lower site side to form a ground mountain until the height of the ridge to be formed is adapted. So that the foundation pillar and the support pillar are exposed on the ground surface, and then inclined toward the ground side between the lower end of the support pillar and the upper end of the foundation pillar. A supporting member made of H-section steel is installed on the base column, and both ends of the supporting member are fixed to the base column and the supporting column, respectively, to support the basic column. Next, the supporting columns adjacent to each other are connected to each other. A second sheet pile is installed on the ground side between the two, and a formwork is installed on the side facing the lower site of the support pillar, and a space is provided between the formwork and the second sheet pile. Is formed, and concrete is poured into the space to retain the ground. A concrete wall is formed, the formwork is removed after the concrete wall is formed, and furthermore, the top end of the concrete wall is cast and covered with a headstone concrete, and the first sheet pile and the second sheet pile are formed. A landslide construction method for building residential lands and the like, wherein landslides and the like are backfilled during the formation of the landslide wall. 4. A leaping work method for piercing a ground formed adjacent to both premises when two premises adjacent to each other are arranged in a stepwise manner. At a position separated by a predetermined width on the upper premises side with respect to the adjacent part, an appropriate gap is placed along the adjacent part, and the depth is greater than the height of the ridge to be formed. A plurality of first holes are formed, and the H-shaped steel base pillars are erected by fixing the inside of the first holes with mortar so that the concave portions thereof face each other. A plurality of second holes are excavated so as to face one hole with a predetermined gap on the lower site side, and the inside of the second holes is reinforced with mortar to form an H-shaped steel. Built-in support pillars such that these concave sides face each other. And then excavating from the upper site side to the lower site side of the foundation pillar to form a ground pile until the bottom pillar side conforms to the height of the dam to be formed. A first sheet pile is attached to the ground side to expose the foundation pillar and the supporting pillar to the ground surface, and then, the upper end of the supporting pillar and the lower end of the foundation pillar H-shaped steel strut members are installed so as to incline from the ground side to the lower site side, and both ends of the strut members are fixed to the base pillar and the support pillars, respectively. A beam made of H-section steel is installed substantially horizontally at the upper end of the base pillar and the upper end of the support pillar, and both ends of this beam are fixed to the support pillar and the foundation pillar, respectively. By forming a U-shaped frame with these supporting pillars, foundation pillars and beam members, After supporting the body,
A second sheet pile is installed on the ground side between the support pillars adjacent to each other, and a formwork is installed on the side facing the lower site of the support pillar, and the formwork and the support pillar are installed. Concrete is poured into a space formed between the concave portion and the second sheet pile to form a concrete wall for retaining the ground, and after the concrete wall is formed, the formwork is removed, and A heave stone wall is formed by casting a cover stone concrete on the upper end of the concrete wall, and burying earth and sand between the first sheet pile and the second sheet pile to form a retaining wall. Construction works for building land to be built. 5. A leaping work method in which, when two adjacent premises are arranged in a step-like manner, a leaping work is performed on a ground formed at an adjacent portion of the two premises, At a position separated by a predetermined width from the adjacent part to the lower site side, a first gap having a depth larger than the height of the ridge to be formed is provided with an appropriate gap therebetween so as to be along the adjacent part. A plurality of holes are formed, and a root column made of H-section steel is formed by solidifying the inside of the first holes with mortar,
Embed and fix so that the concave side faces each other,
Next, a plurality of second holes are excavated on the lower site side of the foundation pillar so as to face the first holes with a predetermined gap therebetween, and a mortar is formed in the second holes. The supporting pillars made of H-section steel are erected and fixed so that their concave sides face each other, and then the lower site side from the upper site side of the foundation pillar is formed. Until the height of the stop is adjusted, the excavation is performed to form the ground, and the base pillar and the supporting pillar are inserted by sequentially inserting a sheet pile on the ground side of the adjacent foundation pillar. Along with being exposed to the ground surface, the upper end of the support pillar and the upper end of the foundation pillar are connected by a substantially horizontally laid beam, and the beam, the foundation pillar, and the support pillar are connected to each other. A pair of strut members, each made of H-shaped steel, are connected obliquely between By supporting the base pillars, a formwork is then installed between the adjacent base pillars, and a space is formed by the formwork, the recesses of the base pillars, and the sheet pile. Forming a concrete wall to pour concrete into the space to hold the ground, removing the formwork after forming the concrete wall,
Next, a shore stop construction method for constructing residential land and the like, wherein a shore stop wall is formed by casting and covering a headstone concrete at an upper end portion of the concrete wall. 6. A leaping work method in which, when two sites adjacent to each other are arranged in a step-like manner, a shore protection work is performed on a ground formed at a portion adjacent to the two sites, wherein At a position separated by a predetermined width from the adjacent part to the lower site side, a first gap having a depth larger than the height of the ridge to be formed is provided with an appropriate gap therebetween so as to be along the adjacent part. A plurality of holes are formed, and a root column made of H-section steel is formed by solidifying the inside of the first holes with mortar,
A plurality of second holes are excavated on the lower premises side of the foundation pillar so that the recessed portions face each other and are fixed while being opposed to the first holes with a predetermined gap therebetween. Then, by fixing the inside of the second hole with mortar, the support columns made of H-section steel are erected and fixed so that these recesses face each other. The site side is inserted so that a first sheet pile is attached to the ground side of the adjacent foundation pillars while excavating to form a ground until the height of the ground stop to be formed is adapted. Next, a second sheet pile is installed on the ground side between the support columns adjacent to each other, and a formwork is attached to a side of the support pillar facing the lower site, A mold, a recess of the support column, and the second arrow Thereby forming a space between,
The upper end of the support column and the upper end of the base column are connected by a substantially horizontally laid beam, and an H-shape is provided between the beam and the base and support columns. After supporting the foundation pillar by connecting a pair of steel strut members obliquely, concrete is poured into the space portion to form a concrete wall for retaining the ground, and the concrete wall is formed. After the formation of the wall, the formwork is removed, and furthermore, the top end of the concrete wall is cast and covered with hessstone concrete, and backfilled with earth and sand between the first sheet pile and the second sheet pile. A method for constructing landslides, such as residential lands, characterized by forming landslide walls. 7. A method for constructing a landslide at a site formed adjacent to the two sites when the two sites adjacent to each other are arranged in a step-like manner. At a position separated by a predetermined width from the adjacent part to the lower site side, a first gap having a depth larger than the height of the ridge to be formed is provided with an appropriate gap therebetween so as to be along the adjacent part. A plurality of holes are formed, and a root column made of H-section steel is formed by solidifying the inside of the first holes with mortar,
Embed and fix so that the concave side faces each other,
Next, excavating from the upper site side of the foundation pillar to the lower site side to the height of the dam to be formed, and excavating to form the ground, sequentially forming the ground of the adjacent foundation pillars. While inserting a sheet pile on the mountain side, a plurality of second holes are excavated on the lower site side of the foundation pillar so as to face the first hole with a predetermined gap therebetween. Then, by fixing the inside of the second hole with mortar, the H-shaped steel support columns are erected and fixed so that these recesses face each other, and the upper end of the support columns and the base column are fixed. And a plurality of H-shaped strut members, which are connected to the upper end of the base member by a substantially horizontally laid beam member, and are arranged so as to be alternately inclined between the base column and the support column. To support the foundation pillars, and then to each other By installing formwork between the foundation pillars bodies fit Ri to form a space between said the mold frame sheet pile,
Concrete is poured into the space to form a concrete wall for retaining the ground, and after the formation of the concrete wall, the formwork is removed, and then a hemstone concrete is poured into the upper end of the concrete wall. A method for constructing landslides for building residential lands and the like, characterized in that the landslide is covered and formed as a landslide wall. 8. A leaping work method in which, when two adjacent premises are arranged in a step-like manner, a leaping work is performed on a ground formed adjacent to the two premises. At a position separated by a predetermined width from the adjacent part to the lower site side, a first gap having a depth larger than the height of the ridge to be formed is provided with an appropriate gap therebetween so as to be along the adjacent part. A plurality of holes are formed, and a root column made of H-section steel is formed by solidifying the inside of the first holes with mortar,
Embed and fix so that the concave side faces each other,
Next, excavating from the upper site side of the foundation pillar to the lower site side to the height of the dam to be formed, and excavating to form the ground, sequentially forming the ground of the adjacent foundation pillars. While inserting a sheet pile on the mountain side, a plurality of second holes are excavated on the lower site side of the foundation pillar so as to face the first hole with a predetermined gap therebetween. Then, by fixing the inside of the second hole with mortar, a plurality of H-shaped steel support columns are installed and fixed so that these recesses face each other, and the upper end of the support column and the base are fixed. It is made of a plurality of H-shaped steel members which are connected to the upper end of the column by a substantially horizontally laid beam, and which are arranged so as to be alternately inclined between the base column and the support column. The foundation column was supported by connecting strut members, then A second sheet pile is installed on the ground side between the support pillars adjacent to each other, and a formwork is installed on the side facing the lower site of the support pillar, and the formwork is installed between the formwork and the sheet pile. A space is formed in the space, concrete is poured into the space to form a concrete wall for retaining the ground, and after the formation of the concrete wall, the formwork is removed, and the foundation pillar and the support pillar are removed. A mountain stop bottom plate is formed so as to cover each lower end of the body, and further, a cap stone is cast and covered on the upper end of the concrete wall, and between the first sheet pile and the second sheet pile. A method for constructing landslides for building residential lands, etc., wherein landslides are backfilled to form landslide walls. 9. The method of claim 1, wherein the sheet pile is a horizontal sheet pile. 10. The sheet pile is a vertical sheet pile, and in order to support the vertical sheet pile, a transverse piece made of a shaped steel such as an equilateral mountain shape is laid across base pillars facing each other. 9. A method for constructing a landslide for creating a residential land or the like according to any one of claims 1 to 8. 11. The method according to claim 1, wherein the sheet pile is a steel sheet such as an iron sheet. 12. The method according to claim 1, wherein the concrete wall is formed of a PC board.