Reinforcement of Anti-pulling Bolts in Ultra-high Gravity Retaining Wall

By installing horizontal anti-pulling bolts and anti-sliders in ultra-high retaining walls, the cross-sectional area of the retaining wall can be reduced. This reinforcement method can effectively reduce the active earth pressure. When different forms of anti-pulling bolts and anti-sliders were arranged, the stress distribution of soil behind the wall had a large impact, and the horizontal stress and horizontal displacement were numerically analyzed. According to the actual situation, the horizontal stress and displacement of the soil behind the gravity retaining wall under different working conditions were calculated to verify its safety and achieve the purpose of reducing the soil pressure. The results show that in the ultra-high gravity retaining wall, the best reinforcement effect can be obtained by using 3 layers of anti-pulling bolts and 2 anti-sliders on each layer of anti-pulling bolts. The pre-reinforcement of the soil behind the retaining wall should increase the stability of the soil behind the wall, and reduce the soil pressure of the soil behind the wall to the retaining wall.