JPH11107280A - Construction of improved reinforcing member (inserted rod) - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the working performance of inserted rods and the thickness control of a filling layer and also to enhance the stability of a fill in a direction perpendicular to a reinforcing strip by drilling holes at constant intervals in the reinforcing strip, placing a predetermined length of a reinforcing bar during embedding the reinforcing member, fixing it to a compacted face of slope of the fill and coupling it by welding a reinforcing rod at right angle. SOLUTION: A strip-shaped reinforcing member 2 is drilled with holes at constant intervals. A plurality of reinforcing members 2 are arranged at predetermined intervals on filling. An improved reinforcing rod 3 is inserted to a hole in each reinforcing member 2 in a direction at right angle with the reinforcing member. The improved reinforcing rod 3 is inserted, welded and connected perpendicularly to the improved reinforcing bar 3 and the reinforcing strip 2. The improved reinforcing rod 3 is fixed to compacted earth below, so that the expansion of the improved reinforcing bar 3 can be reduced when a new fill layer to be cover to the top is being compacted. A reinforcing bar arranged in a direction perpendicularly to the improved reinforcing rod 3 is able to enhance the stability of the whole of a reinforced fill body. Also, the jointing can be performed in factory and thus the workability on the job site can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[Industrial application field] In constructing a reinforced embankment body having a wall surface, a reinforcing material used for the embankment includes a band, a rod, a net, and the like. There are various types such as those made of steel, synthetic resin, or those woven with chemical fibers. Generally, one end of the reinforcing material is fixed to a wall panel constituting a wall, and the other end is simply buried in the embankment as free, and the rolling wall, the stacking, and the reinforcing soil wall are generally constructed. But no matter what kind of reinforcement,
As can be seen from the principle of the reinforced earth wall, the tendency of the front slope to be easily inclined does not change, so the present invention is useful as a method for straightening the front slope, as it enhances the speed of construction and further certainty of the effect. Is considered expensive.

[Prior Art] When embankment of a reinforced earth wall is carried out, it is easy to cause a front inclination of the wall regardless of the necessity of construction. In addition, if you modify it, the wall will become full. These slight displacements do not affect the strength of the embankment, but they are ugly and are described in the manual as guidance for preventing or reducing this during construction. According to this, the displacement of the skin element is particularly likely to occur during compaction work. Therefore, it is recommended that a wedge be driven in and slightly lowered to the rear side when assembling the skin panel. This is a countermeasure that takes into account the strain caused by the compaction of the embankment after the embankment is built and the elongation caused by the internal stress acting on the reinforcing material. Japanese Patent Application No. 8-125193 proposes that reinforcing materials for reinforcing soil arranged on the compacted embankment are fixed to the compacted embankment by reinforcing bars (improved reinforcing material) to reinforce. This is an attempt to prevent the elongation of the material as much as possible and to prevent the wall from leaning forward.

[Problems to be Solved by the Invention] Further pursuing the proposal of Japanese Patent Application No. 8-125193, improving the construction performance of the reinforcing bar and the management of the embankment layer thickness, and the stability of the embankment in the direction perpendicular to the reinforcing material. It seeks to add enhancements and other benefits.

[Means for Solving the Problems] As a method of fixing a newly installed reinforcing material to the compacted lower ground, Japanese Patent Application No. 8-125193 discloses an application in which a belt-like reinforcing material is provided at a fixed interval. Drill a hole at the time of embedding of the reinforcing material and drive it into the hole such as a reinforcing bar of a predetermined length and fix it on the compacted embankment surface. For a bar-shaped reinforcing material, for example, U-shaped or H-shaped Reinforcing bars, etc., are fixed in the embankment compacted at regular intervals, and in the case of mesh-like reinforcing materials, rebars are cast at regular intervals using holes in the net and fixed. Was to do. In the present invention, a reinforcing steel is further placed in a direction perpendicular to the reinforcing material, and the reinforcing steel and the reinforcing steel are welded in advance and connected to each other, so as to be integrally constructed.

[Action] The reinforced earth embankment method has a tensile force generating mechanism in which a frictional force is generated on the surface of the reinforcing material as the soil is deformed, and this passively generates a reinforcing material tensile force. For this reason, in the implementation of the reinforced earth wall embankment, there is a tendency for the wall surface to be tilted forward regardless of the necessity of construction. In addition, deformation due to settlement of the embankment material also causes the wall surface to be buried or inclined. However, these trends do not affect the strength of the embankment, but we wanted to minimize the displacement. In this invention, when laying the reinforcing material,
Since the reinforcing material is fixed to the compacted lower ground, the extension of the reinforcing material during compaction of the new embankment overlying it can be reduced. Reinforcing bars installed in the direction perpendicular to the reinforcing material have the effect of increasing the stability of the entire reinforced embankment body, and the welding of the reinforcing bars and the reinforcing bars can be performed at the factory, so the local construction Performance improves. In addition, the height of the embankment can be more reliably controlled and more reliably controlled by the reinforcing bars connected by reinforcing bars than by the reinforcing bars.

The present invention will be described below with reference to the drawings. FIG. 1 (a) shows a band-shaped reinforcing material, (b) shows a bar-shaped reinforcing material, and (c) shows a mesh-shaped reinforcing material, each of which is provided with an improved reinforcing material using a reinforcing bar (reinforcing bar) according to the present invention. FIG. 3 is a cross-sectional structure diagram in which is constructed. FIG. 2 is an explanatory view in which an improved reinforcing material according to the present invention is applied to construct a reinforced earth wall embankment using a belt-like reinforcing material. FIG. 2 corresponds to FIG. FIG. 3 is an explanatory view in which an improved reinforcing material according to the present invention is applied to construct a reinforced earth wall embankment using a bar-shaped reinforcing material. FIG. 3 corresponds to FIG. FIG. 4 is an explanatory view in which the improved reinforcing material according to the present invention is applied to a mesh reinforcing material, and corresponds to FIG. An example of the structure of the improved reinforcing material for controlling the layer thickness is as shown in FIG.
FIG. 5 (a) is for a band-like or net-like reinforcing material. FIG.
(C) is a device devised for a bar-shaped reinforcing material, and the managed layer thickness is the portion indicated by 4. Generally, it is 30 cm or less.

[Effect of the Invention] (1) Since the reinforcing material is fixed to the embankment after compaction by the streak, the extension of the reinforcing material due to compaction of the subsequent embankment can be reduced. . 2 In addition to the frictional force of the reinforcing material, the deformation of the wall surface is reduced by the passive pull-out resistance of the reinforcing bar that is perpendicular to the inserted reinforcing bar and the reinforcing material. 3 Welding and joining a series of rebars and a series of rebars improve the construction performance at the site. 4 As the embankment body, the addition of the horizontal bars of the reinforcing bars reinforces the strength in the lateral direction and increases the stability.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view of a cross-sectional structure of a reinforced earth wall embankment using the improved reinforcing material of the present application, (a) is a structure in which improved reinforcement is connected to a belt-shaped reinforcing material, and (b) is connected to a bar-shaped reinforcing material. (C) is a structure with improved reinforcement connected to holes in the mesh reinforcement

FIG. 2 is a structural explanatory view in which the present invention is applied to a belt-like reinforcing material.

FIG. 3 is a structural explanatory view in which the present invention is applied to a rod-like reinforcing material.

FIG. 4 is a structural explanatory view in which the present invention is applied to a mesh reinforcing material.

FIG. 5 shows an example of the structure of an improved reinforcing material connected by a reinforcing bar.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wall panel 2 Reinforcement 3 Improved reinforcement (reinforcing bar) connected with transverse reinforcing bar 4 Layer thickness

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaaki Kasai 3-10-3 Minamiyama, Shirai-cho, Inba-gun, Chiba (72) Inventor Masahiro Sato 8-10 Fujimi-cho, Hachioji-shi, Tokyo

Claims (1)

[Claims] When constructing a reinforced earth embankment having vertical wall surfaces, it is already effective to insert reinforcement into the reinforcing material for the reinforced soil in order to prevent deformation and front inclination of the wall surface. "Structure of Improved Reinforcement and Vertical Wall Construction Method" (Japanese Patent Application No. 8-125)
193). This time, in order to ensure the quickness of the construction and the certainty of the construction management, a series of reinforcing bars are welded in advance to the reinforcing material and the reinforcing steel in the perpendicular direction, and are connected to be used.