CN2683703Y

CN2683703Y - Riveting geogrid

Info

Publication number: CN2683703Y
Application number: CN 200420041737
Authority: CN
Inventors: 高红
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-16
Filing date: 2004-03-16
Publication date: 2005-03-09
Anticipated expiration: 2014-03-16

Abstract

The utility model discloses an earthwork grid chamber which is formed in rivet connection to solve the problems of low tensile strength and high elongation rate existing in the existing earthwork grid chamber. The utility model forms a meshy grid chamber by interconnection of contiguous braids in equal distance. The width of the braids is the height of the grid chamber. The braids become stretching braids through stretching, and the tensile strength is 7 to 8 times of that of the original braids. The width of the braids is 5 to 20 centimeters. The junctions of contiguous stretching braids are respectively clamped by symmetrical connecters from the front and the back, and the metal self plugging rivets pass through the through holes on the connecters to rivet and fix the contiguous stretching braids. Metal inter-layers are arranged in the connecters, and through holes are arranged on the connecters in parallel and are composed of perforated small holes and big holes. The utility model has high availability and high safety to the processing of the unfavorable geology in the combination of the utility model and the earth body, which can greatly functions as reinforcing and stabilizing the earth body to various unfavorable foundations. The availability of the tensile strength is remarkably reinforced, and the elongation rate is also low.

Description

The riveted joint geotechnical grid

Technical field

The utility model relates to a kind of geotechnical grid, a kind of specifically geotechnical grid that connects and form of riveting.

Background technology

At present, in construction projects such as highway, railway, aviation, port handling river cargo, when running into mud stone, desert highway, high-grade highway that weak soil, salinized soil, expansive soil, loess coombe cause and fill out special circumstances such as digging boundary, high embankment, Quayside or river bank, for guaranteeing workmanship, often adopt reinforcement material is set in the soil body.According to GB and relevant ministry standard, the elongation per unit length of the geotechnological material of all reinforcement classes all requires less than 16%, and requirement of strength is also higher, disease such as the reinforcement material under the corresponding this technical indicator could effectively be controlled cracking, faulting of slab ends that soil body differential settlement brings, subsides, local eminence.The reinforcement material of domestic production at present and use, with regard to geotechnical grid, the band that uses all is the plastic sheet of unstretched PROCESS FOR TREATMENT, the junction of adjacent ribbons is directly connected by ultrasonic bonding, it is assorted to arrangement that the strand of the plastic sheet of this lattice chamber is, cause the tensile strength of lattice chamber low (23Mpa), and elongation per unit length very high (300-500%).Geotechnical grid under this technical indicator, the reinforced action of the soil body that weakened, it can not effectively control the deformation range of the soil body; And the distortion of the soil body is in a single day uncontrollable, and it is nonsensical that reinforcement just becomes.

Summary of the invention

The purpose of this utility model provides a kind of geotechnical grid that connects and form of riveting, to solve the problem that tensile strength is low and elongation per unit length is high that existing geotechnical grid exists.

The utility model is equidistantly staggered in conjunction with forming netted lattice chamber by adjacent ribbons, and the width of band is the height of lattice chamber; The stretched drawn polymer tapes that becomes of band, hot strength is 7～8 times of former band, the width of band is 5～20 centimeters, and clamp band by before and after the connector of symmetry respectively the junction of adjacent drawn polymer tapes, and the metal rivet of loosing core is passed through hole on the connector with adjacent drawn polymer tapes riveted and fixed.Be provided with metal sandwich in the connector, have through hole side by side on connector, through hole is made up of aperture that connects and macropore.

Because the utility model carries out drawing and setting to plastic strip with 7～8 times hot strength of former band, makes its strand be chain structure, changes the deep drawing quality of original plastic tape; Then the adjacent drawn polymer tapes of moulding is carried out equidistant reedled riveting connection and formed solid netted geotechnical grid, make its with the combining of the soil body in, processing to unfavorable geology has higher validity and safety, can better play reinforcement to various unfavorable foundations, stablize soil body effect.

The utility model is compared with the geotechnical grid product of present domestic production and use, and the validity of tensile strength significantly strengthens (present domestic geotechnical grid: 23Mpa; The utility model geotechnical grid: 180Mpa), have low elongation index (present domestic geotechnical grid: 300-500% again; This riveted joint geotechnical grid: less than 15%).

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the sectional view of the utility model connector.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in the figure, the utility model is equidistantly staggered in conjunction with forming netted lattice chamber by adjacent ribbons, and the width of band is the height of lattice chamber; The stretched drawn polymer tapes 1 that becomes of band, hot strength is 7～8 times of former band, and the width of band is 5～20 centimeters, and the junction between the adjacent drawn polymer tapes 1 is by connector 3 riveted and fixed.Be provided with metal sandwich 4 in the connector 3, have through hole side by side on connector 3, through hole is made up of aperture 6 that connects and macropore 7; The junction of adjacent drawn polymer tapes 1 is clamped band by connector 3 front and back of symmetry respectively, and the metal rivet of loosing core 5 is passed through hole on the connector 3 with adjacent drawn polymer tapes 1 riveted and fixed.

During use,, promptly form netted lattice chamber when when band outwards being drawn back perpendicular to the direction of bar zone face.The riveted joint distance becomes lattice chamber unit lattice size dimension.

The utility model band can adopt high-strength polypropylene or polythene material, and the skin of connector is injection moulding or plating moulding material.The shape of lattice chamber, big I are adjusted accordingly according to requirement of engineering.

Claims

1, a kind of riveted joint geotechnical grid, equidistantly staggered in conjunction with forming netted lattice chamber by adjacent ribbons, the width of band is the height of lattice chamber; It is characterized in that: the stretched drawn polymer tapes (1) that becomes of band, hot strength is 7～8 times of former band, and the width of band is 5～20 centimeters, and the junction between the adjacent drawn polymer tapes (1) is by connector (3) riveted and fixed.

2, riveted joint geotechnical grid according to claim 1 is characterized in that: be provided with metal sandwich (4) in the described connector (3), have through hole side by side on connector (3), through hole is made up of aperture that connects (6) and macropore (7); Clamp band by before and after the connector (3) of symmetry respectively the junction of adjacent drawn polymer tapes (1), and the metal rivet of loosing core (5) is passed through hole on the connector (3) with adjacent drawn polymer tapes (1) riveted and fixed.