JPH01226980A - Frame for cap system and its construction - Google Patents

Abstract

PURPOSE:To shorten the period of construction as well as permit many cables to be buried in narrow places by a method in which a fixed floor plate is formed on the lower side of a vertical strut wall having an adequate length in the longitudinal direction to form an inverted T-shaped support block, and a support wall is formed on the support wall of the block. CONSTITUTION:A horizontal fixed floor plate 3 is formed on the lower side of a vertical support wall 2 with a support block 1 made of reinforced concrete, having an adequate length in the longitudinal direction, to form an inverted T-shaped block. Many fitting parts 4 with tapped holes to be connected with support arms 5 are attached to both sides of the wall 2. The fitting parts 6 of bolts in the arms 5 are connected to the fitting parts 4 and the arms 5 are projectionally formed on adequate positions of both sides of the wall 2. The fitting parts 4 are of a fit-in or projected or coupling mechanism, besides screwing mechanism. Many cables can thus be surely and effectively buried even in narrow places.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to burying cables such as electric wires, telephone lines, traffic signals, and wired broadcasting lines underground on sidewalks in urban areas.
In particular, the present invention relates to a frame for a cab system used for burying cables under narrow conditions such as existing buried objects are close to each other and the sidewalk width is small, and a method for constructing the same.

(Prior art) Conventionally, construction members for cab systems for burying this type of cable have been a lid-hung type, a cylindrical type, in which a tunnel frame with a cross-sectional opening is covered from above to ensure a cavity for working even after burying. There are two types: the box type, and the pipe type that is poured into concrete in narrow spaces.

(Problems to be Solved by the Invention) Due to their configuration, conventional cover-type and box-type construction members for cab systems pose problems when buried under wide sidewalks that are not in close contact with existing buried objects. However, since the width cannot be secured when burying in a narrow place, burying has been carried out using conduit-type cab system construction members. Construction components for conduit-type cab systems are constructed by placing conduits through which cables are inserted into blocks formed by pouring concrete, and although the conduits are constructed so that they cannot be separated from each other, they are blocked by partition walls. , dissimilar cables (
It is possible to accommodate electrical and telephone cables in each conduit of the same block.

However, in the manholes provided at various locations at intervals, the cables coming out of each conduit of each block are close together without a partition wall, and the distance between each other is insufficient, so different types of cables are accommodated in each conduit of the same block. However, there were problems such as the inability to handle different types of cables in the field.

The object of the present invention is to provide a frame for a cab system that can accommodate and bury a large number of different types of cables in such a narrow space, and a method for constructing the same.

(Means for Solving the Problems) In order to achieve the above object, the frame for a cab system of the present invention has a fixed floor plate attached to the lower side of a vertical support wall with an appropriate length along the length direction. It is characterized by forming a support block with a T-shaped cross-section, and having support arms protruding from both sides of the column walls of the support block. This makes it possible to bury cables.

In a support block in which support arms are attached to mounting portions provided on the support wall surface, the support arms can be added to accommodate cables as the number of cables increases at the site.

For support blocks with a protective edge formed by widening the upper part of the support wall, when a vehicle drives onto the sidewalk after burying the support block, the load will be stopped by the protective edge and the cable supported by the support arm will be protected. To protect against this load, cables can be laid and held safely.

By dividing the vertical support wall of the support block into multiple upper and lower parts along the length, it is possible to adjust the depth and shallowness in response to depth restrictions due to underground conditions, and it is also possible to stack the support blocks in a narrow place. Since a large number of cables can be sequentially accommodated in an open state during the process, the accommodation work is easy.

(Function) From the above structure and method, the support wall of the support block with a T-shaped cross section is strongly supported and fixed vertically along the length direction by installing the fixed floor plate, and this strong A large number of buried cables can be stably supported along the length using the supporting arms protruding from both sides of the support wall, which has supporting capacity, and can be installed in a narrow space centered around the support wall. By burying the cable with earth and sand, the predetermined space of the frame required for burying the cable can be minimized in width and depth. Different types of cables can be completely separated from each other by the support wall, and the support arms can be easily spaced apart to maintain the required separation and distance from each other, thereby avoiding the influence of different types of cables on each other. This allows many different types of cables to be buried stably.

(Example) An example of the cab system frame according to the present invention will be described with reference to the drawings.

Figures 1 to 3 are perspective views of cab system frames in which the present invention can be carried out, and the support block (1) is mainly made of concrete with reinforcing steel inside, and has an appropriate length along its length. A horizontal fixed floor plate (3) is provided on the lower side of the vertical support wall (2) with a ridge, forming a T-shaped cross section, and support arms (5) are attached to both sides of the support wall (2). A large number of mounting portions (4) (4) consisting of screw holes are provided, and a mounting portion (6) consisting of bolts of the support arm (5) is connected to the mounting portions (4) (4) to attach the support arm (5) to the support wall (2). Support arms (5
) (5) is provided horizontally protruding. This mounting part (4) (6
) is attached and protruded by any mechanism such as fitting or engaging in addition to the screw mechanism. It is conceivable to provide the support arm (5) integrally with the support wall (2), but the mounting portions (
4) By removably protruding from the support wall (2) in (6), the support arm (
5) can be modified in various ways to protrude, and it is also advantageous in terms of handling such as transportation.

As shown in FIG.
) The upper side is formed wide along the length direction to form a protective edge (2
By providing the support arm (5) that protrudes from the support wall (2), since the sidewalk surface and the buried cable αυ are close to each other in places where vehicles may drive onto the sidewalk.
It is possible to protect the cable αG supported by the vehicle from the load of this vehicle and maintain safe laying, and when hanging the conduit protection plate (to), this protective edge (2a) can be used as a supporting edge. This has the effect of providing stable engagement.

, as shown in Fig.
2) is divided vertically into a plurality of parts along the length direction, and a connecting member (7) made of metal material and having a U-shaped cross section is stacked on each support wall part (2W) (2X) (2Y). By configuring the support block (1) by connecting them vertically with bolts and nuts (8) (8), the length of the support block (1) can be adjusted depending on the situation at the burial site. The structure is low in bulk and easy to handle when transported to the site, and the top support wall (2'w) has a protective edge (2'w).
a), by connecting or removing this support wall (2'w) last during the on-site burial process, the cable QυαO attachment work to the support arm (2) can be done easily and reliably. become.

Next, a construction example of a method for constructing a frame for a cab system in which the present invention can be carried out will be explained sequentially with reference to FIGS. 4 to 7. In FIG. A groove hole αO of a depth is dug and formed, and a curing bed made of crushed basic stone αη and mortar (2) is applied to the floor surface of the groove α0, and a support block (1) with a cross-sectional surface T U-shaped is fixed. The floorboards (3) are installed and connected in the length direction, and as shown in Fig. 5, the pile sheets α 吾 3 are arranged on both sides along the slot α0 of the support block (1), and the pile sheets α] The support block (1) is installed by being stretched vertically from the inside through the support block (1) with struts α→α→, and the outside is backfilled with earth and sand.
) is fixed in the slot aQ, and in that state, as shown in Figure 6, support arms (
5) (5) are mounted and protruded so as to be parallel in the length direction, and the support arms (5) (5) support the support tube a0 through which the cable (c) αυ is inserted and accommodated along the length direction. The lining plate α can be opened and closed at night while the burial work continues.
After temporarily covering with η and completing the installation of cable αυ in Figure 7,
Remove the struts α and α→, remove the sheet pile α3 (13), fill in the groove αQ with soil, and bury the support block (1) together with the support pipe QQ and compact it with a roller, so that the burial depth is relatively shallow. Therefore, when digging up for sidewalk pavement repair work, etc., it is easy to damage or cut the buried cable Q5 supported by the support block (1), and to prevent this, concrete conduit protection is used. Plate a is placed on the support wall (2) and side of the support block (1), paving (9a) is applied to the top surface of the board, and the cable burial is completed by placing the road at the bottom, which is suitable for narrow spaces. This makes cable burying more effective.

It is also possible to engage the contact surfaces of the support blocks (1) (1) in the length direction with bolts and nuts in an uneven manner, and connect the conduit protection plate (G) with the support blocks (1) in the same way.
) can be fixed to the upper side of the support wall (2) with bolts, nuts, anchors, etc., to further ensure mutual connection and engagement.

(Effects of the Invention) This invention consists of the above structure and method, and the vertical support wall of the support block formed in a T-shape in cross section is strongly supported by the horizontal fixed floor plate integrally provided at the lower side thereof. It is supported and stably fixed vertically when installed on the floor of a trench dug for burial. The cable (support pipe) is supported and laid using the supporting arm that protrudes from the wall surface of the support wall, which has a large supporting capacity, and is then buried in earth and sand to ensure that the cable (support pipe) is strong and secure. It is safe because the cables can be buried efficiently and safely, and the cables can be separated on both sides of the support wall, and the cables can be supported with a sufficient distance between the top and bottom, so that they do not affect each other. Effective for burying cables that require unsuitable isolation. In particular, the simple structure of the support block, which has a T-shaped cross-section as a whole, allows cables (support pipes) to be stably supported around the vertical support wall that is fixed at the fixed floor plate. Since the cable (support pipe) is directly buried with earth and sand, the buried width and depth along the length of the cab system frame that accommodates the buried cable is extremely small, and it is possible to accommodate and support a large number of cables. This makes it possible to efficiently and reliably bury a large number of cables in places with narrow roads or in narrow places where existing buried objects are close together. The molding process has been further simplified and costs have been reduced. Furthermore, even during the burying process of constructing the cab system surrounding frame, a single structure with a fixed floor plate provides strong fixation with a simple installation process. By significantly shortening the construction period required by conventional complicated combinations, the disadvantage of occupying the road for a long time for cable burying work is eliminated, and the obstruction of traffic is minimized. In addition, there are many effects such as reduction in burial construction costs.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a frame for a cab system in which the present invention can be carried out, and FIGS. 2 and 3 are views of other embodiments in which the frame for a cab system is removed with the supporting arms removed. The perspective views and FIGS. 4 to 7 are vertical sectional views sequentially showing the embedding process in the method of constructing a frame for a cab system according to the present invention. In the figure, (1) is a support block, (2) is a support wall, (2a
) indicates the protective edge, (2W) (2X) (2Y) indicates the divided support wall, (3) indicates the fixed floor plate, (4) indicates the mounting section, (5) indicates the support arm, and (6) indicates the mounting section.

Claims (5)

[Claims] (1) A fixed floor plate is provided on the lower side of a vertical support wall with an appropriate length along the length direction to form a support block with a T-shaped cross section, and support arms are attached to the support wall surface of the support block. A frame for a cab system consisting of a protruding structure. (2) The frame for a cab system according to claim 1, wherein a mounting portion is provided on the support wall surface of the support block, and a support arm is attached to and protrudes from the mounting portion. (3) The frame for a cab system according to claim 1 or 2, wherein a wide protective edge is formed on the upper side of the support wall of the support block. (4) Claims 1 to 3 in which the support wall of the support block is divided into a plurality of upper and lower parts along the length direction and are connected to each other.
The frame for the cab system according to any one of the above. (5) A support block with a T-shaped cross section is formed by a vertical support wall with an appropriate length along the length and a fixed floor plate installed on the lower side of the support block, and a groove is dug in the road. A cab system consisting of the process of installing the fixed bed part of the support block on the curing bed part of the support block, connecting them sequentially in the length direction, supporting the cable with support arms protruding from the support wall of the support block, and filling it with earth and sand. How to construct a frame.