A method for calculating earthquake earth pressure of gravity embankment retaining wall

Abstract

The invention discloses a method for calculating earthquake earth pressure of gravity embankment retaining wall, which comprises the following steps: according to the basic assumption of Coulomb earthpressure theory, a theoretical model calculation diagram is established according to the limit equilibrium state of a quadrilateral sliding soil wedge; considering the static equilibrium condition ofsoil wedge, the equilibrium diagram of force system is established; gravity G and seismic inertia force F are synthesized to obtain F combination and simplifying force system equilibrium diagram; according to the sinusoidal theorem, the seismic active earth pressure of gravity embankment retaining wall is calculated. A method for calculating earth pressure of gravity embankment retaining wall under earthquake condition features that a shaking table test is carried out to compare that theoretical calculation result with the actual measurement result, and the theoretical calculation result is proved to have high accuracy and the applicability of the calculation method is verified.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a calculation method for earthquake earth pressure of a gravity type embankment retaining wall. Background technique [0002] Gravity retaining wall is a commonly used retaining wall at present, and its characteristic is to maintain the stability of the retaining wall under the action of earth pressure by the gravity of the retaining wall itself. Under earthquake conditions, the number of damages suffered by gravity retaining walls is the largest among all retaining wall structures, and the degree of damage is relatively serious. Therefore, it is necessary to study the seismic earth pressure on gravity retaining walls. [0003] Most of the existing studies focus on the gravity retaining wall of the road shoulder, and there are some methods for calculating the seismic earth pressure on the gravity retaining wall under earthquake conditions. In actual engineering,...

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Problems solved by technology

In actual engineering, it is also very common that the retaining wall is connected to the road through the embankment, that is, the gravity embankment retaining wall is also widely used, but how to calculate the impact on the back of the gravity embankment retaining wall under the earthquake condition Earthquake earth pressure is still blank

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