Pile type reinforced embankment plane soil arch effect testing device

Abstract

The invention discloses a pile type reinforced embankment plane soil arch effect testing device which comprises a base in a rectangular box frame shape. Two parallel side piling beams are arranged at the bottom of the hollow portion inside the base, the side piling beams are arranged tightly close to the base, a middle piling beam which is parallel to the side piling beams is arranged between the two side piling beams, the top face of the middle piling beam is flush with the top faces of the side piling beams, four tempered glass plates form a rectangular space in a defined mode and are installed on the base, the spaces between the middle piling beam and the side piling beams are respectively provided with a water bag, a plurality of aluminium alloy strips are fixed on the upper surface of each water bag, a plurality of soil pressure boxes are arranged on the middle piling beam and the upper surfaces of the water bags, embankment fillings are filled above the soil pressure boxes, and a displacement meter is arranged on the top faces of the embankment fillings. After water is filled in the rubber water bags, the water bags conduct filling on the embankment fillings in a layer-by-layer mode, and after incompressibility of water enables the embankment fillings to reach the reserved height, the relative displacement of pile soil is always zero. Sedimentation of weak soil is simulated in a gradual water draining mode, and the relative displacement of the pile soil can be precisely controlled.

Description

【Technical field】 [0001] The invention relates to a test device, in particular to a test device for measuring the plane soil arch effect of a pile-supported embankment. 【Background technique】 [0002] The pile-supported reinforced embankment is composed of embankment filler, one or more layers of horizontal reinforcement, individual pile caps and rigid piles. It has the advantages of small total and differential settlement of the embankment, short construction period, and high embankment stability. Soil arching effect has an important influence on the bearing deformation behavior of embankment. The relative displacement of pile and soil is the root cause of soil arching effect in embankment. At present, plastic foam materials are often used in laboratory tests to simulate the settlement of soft soil under load, but the size and time of deformation are uncontrollable. 【Content of invention】 [0003] The object of the present invention is to provide a pile-supported reinfo...

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Problems solved by technology

[0003] The object of the present invention is to provide a pile-supported reinforced embankment plane soil arch effect test device, to solve the problem that the size and time of deformation are uncontrollable when simulating the settlement of soft soil under load in the existing test device; The invention can reveal the change law of the pile-soil stress and determine the height of the equal sinking surface of the plane soil arch

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