SU1740557A1 - Earthquakeproof structure - Google Patents

Description

where C is the width of the pile area across the slope, m;

A is the size of the foundation of the structure across the slope, m;

B - the size of the foundation of the structure in the direction of the slope, m;

p - the angle of the internal friction of the soil, grad .;

L- pile length, m

FIG. 1 shows a seismic resistant structure on a slope; in fig. 2 shows section A-A in FIG. one,

The earthquake-resistant structure 1 includes a foundation 2, aerial part 3, piles 4 and beams 5, where piles 4 are interconnected and foundation 2 with the help of beams 5.

In the absence of an earthquake, the structure 1 on the slope will be in equilibrium, in which the forces causing the structure 1 to slide together with the lower ground will be balanced by the forces arising from the adhesion of the soil along the plane of possible slip. In this case, the gliding (sliding) plane of structure 1 will be forgiven at an angle to the horizontal surface, equal to the angle of internal friction of the soil, ue, and the slip plane is located at a depth T of B-sirh p normal to the surface of the slope. At the same time, the ground slip plane extends downward in the direction of the slope starting from the lower edge of the base of the basement 2, which is far from the bottom of the slope.

With an earthquake, facility 1 on a slope works as follows.

The static force from the weight of the structure 1 and the underlying soil causing the sliding structure 1 together with the underlying soil will be additionally applied to the force from the seismic load. In this case, if the opposing force arising from the adhesion of the soil along the plane of the possible

sliding (sliding) will not hold the mass of the structure 1 and the ground; they will be put into operation of the pile 4. The structure 1 on the slope together with the lower

the soil that may be involved in sliding together with structure 1 will be held together by the total force from the soil adhesion and the reaction occurring in the section of pile 4. In turn, the piles 4 work to cut along the plane of possible slip of structure 1. Uniform system operation is provided by beams 5 that connect all the piles 4 between themselves and with the foundation 2 of structure 1.

The proposed solution has a particularly high reliability. It can be implemented both in newly constructed structures, and to ensure the reliability of existing structures.

previously built on dangerous slopes in seismically active areas

The construction of the structure is carried out by known methods.

Claims (1)

The proposed solution can be used both for new construction and for ensuring the sustainability of existing structures on the slopes. Formula of the invention A seismic resistant structure including a ground part, a foundation and longitudinal and transverse beams placed along the slope, characterized in that, in order to increase stability, it is equipped with slope-mounted beams interconnected by beams, the width of the pile placement zone across the slope and their length being determined from the following relationships C A + 2B-COS p: L B-tg p, where C is the width of the pile area across the slope; A is the size of the foundation of the structure across the slope; B - the size of the foundation of the structure along the slope; (p is the angle of the internal friction of the ground, L is the length of the piles. BUT A-A five X X X X //////// 7 /// 77 phage. one four ЈW. g