CONSTRUCTION SHEETING TRANSVERSE TRUSS METHOD AND STRUCTURE FOR EXECUTING EASILY A PIT EXCAVATION WORK AND PREVENTING SOILS OF A SIDE WALL FROM COLLAPSING

摘要

PURPOSE: A construction sheeting transverse truss method and a structure are provided to facilitate an earth work by an empty cylindrical working space formed in the center of the ground in a pit excavation and to reduce strut steels. CONSTITUTION: A construction sheeting transverse truss method is composed of a plurality of side piles/temporary retaining walls(50) settled vertically in the ground along the outline of the ground; center piles(70) fixed vertically and arranged at constant intervals in the ground of the inside of the side piles/temporary retaining walls; a wale(80) continued horizontally along the inner rim of the side piles/temporary retaining walls; cross support beams(60) fixed to push the wale and combined horizontally in a grid form on the line of plural center piles and piled up in multi-stages on the underside line of the center pile; and an X-shaped angle bracing unit(90) stuck and fixed between the cross support beams layered on the center pile in multi-stages. The center pile and the cross support beam are fixed across each other. An empty working space(100) is formed in the center of the ground.