JPS6254959B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for constructing bulkheads for underground passages such as public ditches and sewer culverts.

Conventionally, in common sewers, the storage space for telephones, electricity, gas, water and sewage, etc. is usually separated by partition walls and used in combination.In addition, in sewer culverts, sewage and rainwater are separated by partition walls and used as a separate sewer system. It may be made available.

In such cases, it is natural to divide existing underground passages, but also for newly constructed underground passages, especially by using shield construction method, push pipe construction method, immersion construction method, etc.
When constructing the main body, the partition wall is usually constructed after the main body is constructed.

Construction of this bulkhead is carried out by setting formwork, reinforcing bars, etc. inside the underground passage and pouring concrete, but it is extremely difficult to construct high-quality reinforced concrete bulkheads due to problems such as breathing around the concrete. In addition, since transporting various materials and assembling and dismantling formwork at a narrow construction site is extremely complicated, the idea of using precast concrete for this purpose has been proposed and put into practical use. For example,
As shown in No. 026829, a precast concrete plate is carried into the underground passage using a transport trolley, and via a hole-in anchor driven into the top of the Huyum pipe,
Methods of attaching it to the building frame have been proposed. In these cases, special transport carts are used, which can result in high costs, and the time it takes to shuttle the transport carts back and forth also requires considerable time and effort on site.

This invention is a construction method developed in view of the above circumstances, and has made construction easier and more effective. The details will be explained below with reference to illustrated embodiments.

A indicates an underground passage serving as a common ditch, and a guide rail 1 is fixed to the ceiling of the underground passage frame in the length direction of the underground passage. This guide rail 1 is made of reinforced concrete, steel, FRP material, etc. with an I-shaped cross section, and the ceiling portion is adhered with epoxy resin or the like, or fixed using metal fittings such as anchor bolts. Unit bulkhead plate 2 is reinforced concrete plate, copper plate
It is made of FRP, GRC board, etc., has a recess 3 formed in its upper part, and is configured to have casters 4 so that it can be suspended from a guide rail 1 and can be moved along the guide rail 1. Note that a bracket may be provided from the unit partition plate 2 without using the caster 4, and an anti-friction sheet such as a Teflon sheet may be interposed between the guide rail 1 and the bracket so that it can be fed.

The required number of unit partition plates 2 are sequentially conveyed from the shaft to a predetermined position in the underground passage, and then the unit partition plates 2 are lifted and brought into contact with the top of the building structure. A sealing material 5 is interposed between the ceiling of the frame and the unit partition plate 2, and cement paste or mortar 6 is injected into the gap between the guide rail 1 and the recess 3 of the unit partition plate 2 to fix both. . Further, a wedge is formed in the gap between the lower end of the unit partition plate 2 and the underground passage frame to prevent the partition plate from descending, and then concrete is poured or mortar 7 is filled to fix it.
It is also possible to cast and fix invert concrete as shown in Figures 5 and 6. Note that this unit partition plate 2 can also be placed in an eccentric position in an underground passageway with a circular cross section. (See FIG. 4) Furthermore, the cross section of the guide rail 1 is not limited to an I-shaped cross section, but can also be a lip-shaped cross section as shown in FIG. 7, or an L-shaped cross section. Furthermore, the casters 4 can be made removable from the unit partition plate 2 as shown in FIG. 8 so that they can be recovered.

FIG. 9 shows another invention, in which a guide rail 1 is fixed to the floor of an underground passage A, casters 4 are provided at the bottom of a unit partition plate 2, and a unit partition plate 2 is mounted on the guide rail 1. The unit partition plates 2 are placed and transported one after another to a predetermined position, and then the upper and lower ends of the unit partition plates 2 are fixed to the underground structure. If necessary, an auxiliary guide rail 12 may be provided on the ceiling to prevent the unit partition plate 2 from falling.

Incidentally, by providing packing 13 on the top or ceiling of the unit partition plate 2, the casters 4 can be removed to enable movement and adjustment of the subsequent unit partition plate and to ensure sealing.

This invention has the above-mentioned configuration, and a guide rail is installed at the installation position of the bulkhead plate on the ceiling or floor of the underground passage, and the bulkhead plate is suspended or placed on the guide rail using this guide rail to be transported. It is easy to transport the bulkhead into the interior, and once it is transported to the designated location, the bulkhead board can be fixed by filling the gap with mortar at approximately that location, allowing for quick construction and no special equipment required. It also requires less time and effort on site.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the construction process, Figures 2 and 3 are sectional views of important parts, Figures 4, 5, and 6 are sectional views of other embodiments, and Figures 7 and 8. The figure is a sectional view of a main part of another embodiment, and FIG. 9 is a sectional view of another embodiment of the invention. A... Underpass, 1... Guide rail, 2... Bulkhead plate, 3... Recess, 4... Caster, 5... Sealing material, 6... Grout material, 7... Mortar or concrete, 8... Wedge , 9, 10... Invert concrete, 11... Guide rail, 12
...Auxiliary guide rail, 13...Patzking.

Claims (1)

[Scope of Claims] 1. A guide rail is fixed to the ceiling, unit partition plates are suspended from the guide rail and transported one by one to a predetermined position, and then the upper ends of the unit partition plates are attached to the ceiling of the frame integrally with the guide rail. A method of constructing partition walls for underground passages, characterized in that the lower ends of the unit partition plates are filled with concrete or mortar between the frames and fixed to form a partition wall. 2. Fix a guide rail to the floor, place the unit bulkhead plates on this guide rail, and transport them one by one to a predetermined position. Next, fix the lower ends of the unit bulkhead plates together with the guide rail to the building frame. An underground passage bulkhead construction method characterized by filling and fixing concrete or mortar between the frames at the upper end to form the bulkhead.