JPH0321709A - Revetment retaining wall block body with road plate and road widening method using block body - Google Patents

Abstract

PURPOSE:To facilitate the works of widening of road, water channel, etc., by providing a road plate part serving as footway, etc., to the crown of a retaining wall block body consisting of a bottom plate part and a vertical wall part. CONSTITUTION:A revetment retaining wall block body 30 provided with a road plate consisting of at least a bottom plate part 1, a vertical wall part 2, and a road plate part 3 is formed. After the completion of grounding work of a foundation ground, the revetment retaining wall block body 30 is installed. Connecting metal fittings are then inserted into connecting metal fitting-inserting holes 11 penetrating through at desired places in the direction of extension of the revetment retaining wall block body 30. Further, the respective revetment retaining wall block bodies 30 are formed into a monolithic construction, and the back space of the retaining wall block bodies is backfilled. Thus, widening of road can be easily performed without affecting the flow rate of water channel, etc., construction cost can be reduced and construction period can also be shortened.

Description

[Detailed Description of the Invention] <Industrial Application Fields> The present invention relates to a revetment retaining wall block body used for revetment work on waterways, rivers, etc., and in particular to a revetment retaining wall block body with a road plate suitable for road widening work accompanied by revetment work. This article relates to wall blocks and road widening methods using them.

《Prior art》 In recent years, as the volume of automobile traffic has increased dramatically, it has been recognized that it is necessary to separate roadways and sidewalks to ensure the safety of pedestrians, and there has also been an increase in the width of each. There is.

On the other hand, as road surfaces become more paved due to urbanization, the current situation is that rainwater does not permeate underground and most of it flows into waterways, making it necessary to widen waterways. However, it is difficult to secure land for road widening, especially in densely populated urban areas, and it is difficult to widen roads that are integrated with seawalls adjacent to waterways without reducing the drainage capacity of waterways, etc. Met.

Conventionally, in widening work for roads that are integrated with waterways, etc., after constructing a normal bank, bridge piles are driven into the back of the bank and into the waterway, etc., and the bridge piles are placed at the top of each bridge pile. A construction method is used to widen roads by laying or pouring concrete slabs and installing sidewalks over waterways, etc. (see Figure 4).

However, with the above conventional construction method, not only does the construction period become longer because the main body of the revetment and the widening road board are cast individually on site, but also the temporary construction costs are high as water must be stopped for a long period of time. However, since the bridge piles are installed inside waterways, they have the disadvantage of obstructing river flow. <<Problems to be Solved by the Invention>> Therefore, as a result of intensive studies to solve the above-mentioned drawbacks, the inventor of the present invention has developed a road that can be used as a sidewalk at the top of a retaining wall block body consisting of a bottom plate part and a vertical wall part. The inventors have discovered that by providing a plate portion, it is possible to create a stable structure that can easily widen not only roads but also waterways, etc., and have arrived at the present invention.

Therefore, the first object of the present invention is to provide a bank retaining wall block with a road plate that can widen the road without obstructing the flow rate of a river even on a road integrated with a bank of a waterway or the like. be.

A second object of the present invention is to provide a road widening method using ice wall blocks with road plates that is easy to construct and can significantly shorten the construction period. <<Means for Solving the Problems>> The above-mentioned objects of the present invention are to provide a stationary revetment retaining wall block, which includes at least a bottom plate, a vertical wall rising from the bottom plate, and a top of the vertical wall. This was achieved by using a retaining wall block with road temporary protection, which is characterized by a road slope that protrudes from the edge, and a road widening method using it. DESCRIPTION OF THE PREFERRED EMBODIMENTS The road plate-equipped bank retaining wall block body of the present invention will be described in detail below with reference to the drawings.

FIGS. 1(a) to 1(d) are cross-sectional views of the bank retaining wall block body with a road plate of the present invention, in which (a) is a Z-shaped block, (b) is a Z-shaped vertical wall type, and (C ) is a U-shaped horizontal type, and (d) is a U-shaped horizontal slope type. In the figure, code (1) is the bottom plate, code (2)
is a vertical wall part, and code (3) is a road slope part. The shape of the road plate-equipped seawall block body of the present invention is not limited to the above-mentioned types (a) to (d), and at least the bottom plate part (1),
Any shape may be used as long as it consists of a vertical wall portion (2) and a road plate portion (3). In addition, the height of the vertical wall portion (2) and the protrusion length of the road plate portion (3) can be designed as appropriate depending on the site situation.
It goes without saying that the dimensions of each part are determined by normal stability calculations and stress calculations for retaining walls.

The retaining wall block with road temporary protection of the present invention can also be provided with hanging bars (not shown) at desired locations for hooking the hooks of hanging machines such as cranes.

FIGS. 2(a) and 2(b) are perspective views of a Z-shaped retaining wall block with road temporary protection. In the figure, reference numeral (10) indicates a buttress that can be provided as necessary. This retaining wall (10) can be provided, for example, at both ends of the block body as shown in FIG. 2(a), or at the center of the back surface of the block body as shown in FIG. 2(b). It goes without saying that it is not preferable to provide a buttress wall in the front water channel of the block body because it will impede the flow rate.

Reference numeral (l1) is a connecting fitting insertion hole that can be provided as needed, and is a hole for inserting a connecting fitting such as a piano wire or a steel bar used for connecting the installed block bodies.

Reference numeral (12) indicates a handrail (balustrade) support post fixing hole that can be provided as necessary.

Next, a road widening method using the road temporary retaining wall block body of the present invention will be described in detail.

In the road widening method of the present invention, after foundation work is performed on the foundation ground as desired, the retaining wall block body with road plate of the present invention is installed, and the block body is penetrated at a desired location in the extending direction. This road widening method is characterized by inserting a connecting fitting into a connecting fitting insertion hole, integrating the block bodies, and then widening the road by backfilling the back surface of the block body.

FIG. 3(a) is a sectional view showing a road widening construction method using the road temporary retaining wall block body of the present invention. In the figure,
Reference numeral (30) is a Z-shaped revetment retaining wall block with a road plate, and reference numeral (3l) is a handrail.

The code (32) is the foundation shaft, the code (33) is the sheet pile to prevent scour, the code (34) is the foundation split stone, and the code (35) is the foundation concrete. This is foundation work that is constructed on the foundation ground according to the following. In addition to the above-mentioned construction examples, the road widening construction method using the road temporary retaining wall block body of the present invention can be applied to construction methods such as bank revetment construction and road widening construction using known block bodies. In addition, when widening a road that has a waterway or the like that is deep relative to the planned road surface, the lower part of the revetment is constructed with an L-shaped retaining wall block as shown in Fig. 3(b), and the present invention is applied on top of the L-shaped revetment retaining wall block. It is also possible to construct a retaining wall block body with road plates. In the figure, reference numeral (40) indicates a revetment retaining wall block body that can be used in combination with the revetment retaining wall block body with a road plate of the present invention, and is in charge of the lower part of the revetment. The code (4l) is a scouring prevention river root block that can be provided as necessary.

FIG. 4 is a sectional view showing the conventional construction method.

<<Effects>> As detailed above, according to the road plate-equipped retaining wall block body of the present invention and the road widening construction method using the same, a road slope section serving as a sidewalk, etc. is provided at the top of the vertical wall section. Therefore, it is possible to easily widen a road that is integrated with a bank of a waterway or the like without affecting the flow rate of the waterway or the like. In addition, since it is a block structure, the cost required for temporary construction can be reduced, and the construction period can be shortened.

[Brief explanation of the drawing]

FIGS. 1(a) to 1(d) are cross-sectional views of the bank retaining wall block body with a road plate of the present invention, in which (a) is a Z-shaped block, (b) is a Z-shaped vertical wall type, and (C ) is a U-shaped horizontal type, and (d) is a U-shaped horizontal slope equation. FIGS. 2(a) and 2(b) are perspective views of a Z-shaped road plate-equipped bank protection block body. Fig. 3(a) is a cross-sectional view of the road widening method using the road plated retaining wall block body of the present invention, and Fig. 3(b) is a cross-sectional view of a road having a deep waterway etc. with respect to the planned road surface. It is a sectional view showing a construction method suitable for widening work. FIG. 4 is a sectional view showing the conventional construction method. 1...Bottom board part 2...Vertical wall part 3...Road plate part 10...Brench wall l1...Connection fitting insertion hole 12...Handrail support fixing hole 30...・Revetment retaining wall block body with road plate 3l...Handrail 32 ・ 33 ・ 34 ・ 3 5 ・ 4 0 ・ 4 1 ・ Foundation pile sheet pile foundation Split chestnut stone foundation Concrete revetment retaining wall block body Scour prevention river root block

Claims (1)

[Scope of Claims] 1) A fixed-type bank protection retaining wall block body comprising at least a bottom plate (1), a vertical wall portion (2) rising from the bottom plate (1), and the vertical wall portion (2). The road plate part that protrudes from the top of the (
3) A revetment retaining wall block body with a road plate, characterized by comprising: 2) The road plate-equipped retaining wall block according to claim 1, wherein the cross-sectional shape is Z-shaped. 3) The road plate-equipped retaining wall block body according to claim 1, which has a U-shaped horizontal cross-sectional shape. 4) The bank retaining wall block body with a road plate according to claim 1, wherein the cross-sectional shape is U-shaped horizontally, and the vertical wall portion has a normal slope. 5) After performing foundation work on the foundation ground as desired, install the retaining wall block body with a road plate according to any one of claims 1 to 4, and penetrate the block body at a desired location in the extension direction. A road widening method characterized by inserting a connecting fitting into a connecting fitting insertion hole, integrating the respective block bodies, and then widening the road by backfilling the back surface of the block body. 6) The road widening method according to claim 5, wherein piano wire is used as the connecting fitting for tightening.