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Preparation method of earthquake landslide vibrating table test physical model

A technology of shaking table test and physical model, which is used in the preparation of landslide models for shaking table tests and the preparation of physical models for earthquake and landslide shaking table tests. Effect

Inactive Publication Date: 2010-09-15
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This model cannot be directly used on a shaking table and subjected to vibration tests to study the spectral characteristics of landslides

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The manufacturing steps of the arc-shaped landslide physical model are:

[0019] (1) Model design

[0020] According to the actual size of the vibrating table, the size of the model is 70cm×50cm×50cm, the radius of the sliding surface is 30cm, the radian is 120°, and the width is 50cm. The material used to make the model is concrete, the strength design value is C25, the cement is #425 ordinary Portland cement, the particle size of the stone is 3-10mm, the sand is medium sand, and the weight ratio of various materials is cement: stone: sand : water=1:2.85:1.52:0.52.

[0021] (2) Production of steel plates and templates:

[0022] The steel plate is slightly larger than the model, the size is 90cm×70cm, and the thickness is 10mm; after the steel plate is cut, the center position of the bolt hole and the welding place of the steel bar is determined on it, and the distance between the bolt holes is 20cm, and the distance between the center of the bolt hole and the edge of...

Embodiment 2

[0032] The steps to make the stepped landslide physical model are:

[0033] (1) Model design

[0034] The size of the model is 70cm×50cm×50cm. The section of the landslide body is pentagonal. The side lengths are 26cm, 24cm, 14cm, 9.5cm, and 43cm. The longest side is the sliding surface, and the width of the landslide body is 50cm. The material used to make the model is concrete, and the weight ratio is cement: gravel: sand: water=1:2.85:1.52:0.52.

[0035] (2) Production of steel plates and templates:

[0036] The size of the steel plate is 90cm×70cm, and the thickness is 10mm; the distance between the reserved bolt holes on the steel plate is 20cm, the center of the bolt hole is 5cm from the edge of the steel plate, the distance between the welded steel bars is 30cm (long side)×20cm (short side), and the distance between the outermost row and the steel plate The edge is 15cm; after the bolt holes are opened, cut the steel bars, the lengths of the three rows of steel bars a...

Embodiment 3

[0043] The steps to make the wedge-shaped landslide physical model are:

[0044] (1) Model design

[0045] The size of the model is 70cm×50cm×50cm, the side lengths of the two triangular slopes of the wedge are 20cm, 20cm, 20cm, 42.5cm, 20cm, 42.5cm, and the angle between the two slopes is 135°. The material used to make the model is concrete, and the weight ratio is cement: gravel: sand: water=1:2.85:1.52:0.52.

[0046] (2) Production of steel plates and templates:

[0047] The size of the copper plate is 90cm×70cm, and the thickness is 10mm; the distance between the reserved bolt holes on the steel plate is 20cm, the center of the bolt hole is 5cm from the edge of the steel plate, the distance between the welded steel bars is 30cm (long side)×20cm (short side), and the distance between the outermost row and the steel plate The edge is 15cm; after the bolt holes are opened, cut the steel bars, the lengths of the three rows of steel bars are 40cm, 20cm, and 15cm respectively...

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Abstract

The invention discloses a preparation method of an earthquake landslide vibrating table test physical model, comprising the following steps of: A, design of the model: determining the shapes and the sizes of a bedrock and a landslide body according to the size of a vibrating table and the form of a slickenside, selecting materials for casting the model and determining the proportion; B, manufacture of a steel plate and a modeling plate: making the steel plate larger than the model, reserving a bolt hole in the steel plate and welding reinforcing steel bars, making each panel according to the sizes of the bedrock and the landslide body for sequentially connecting and fixing; C, casting and formation of a bedrock model: fixing a bedrock modeling plate in the middle of the steel plate, evenly mixing casting materials, pouring the materials into the model box for stirring and compacting, and fixing by the modeling plate after casting the casting materials on the slickenside; D, manufacture of the landslide body: after forming the bedrock, coating two layers of plastic thin films on the formed bedrock, fixing the landslide body modeling plate, and then pouring the casting materials into the modeling plate. In the invention, the preparation method is easy to carry out and simple to operate and can be used for manufacturing landslide models with different slickenside shapes, which are suitable for the test of the vibrating table.

Description

technical field [0001] The invention relates to a landslide physical model technology, and more specifically to a method for preparing a physical model of an earthquake landslide shaking table test, which is suitable for making a landslide model for a shaking table test to conduct a vibration test to study the frequency spectrum characteristics of a landslide. Background technique [0002] Earthquake landslide refers to the geological event that the landslide body that is close to or just in the critical state slips ahead of time due to the triggering action of the earthquake. The impact of earthquakes on the formation of landslides is mainly produced by the fluctuation and oscillation of the slope body. Its essence is to cause stress on the landslide body through vibration and lead to the destruction of the landslide body. When an earthquake occurs, the slope body often selectively amplifies the seismic waves in a specific frequency domain, and the initiation effect is rapi...

Claims

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Application Information

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IPC IPC(8): G09B25/06
Inventor 焦玉勇张秀丽吴火珍宋亮王浩王新志张国华
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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