Bài tập SBVL1 (Tiếng Anh) - Phần AXIAL LOAD (Bài 6 dến bài 10)

• Đăng bởi: lethithanhbinh
• Sinh viên
• 17/09/2018

Axial Load 6: The weight of the kentledge exerts an axial force of  P = 1500 kN on the 300-mm diameter high-strength concrete bore pile. If the distribution of the resisting skin friction developed from the interaction between the soil and the surface of the pile is approximated as shown (Pig6), and the resisting bearing force F is required to be zero, determine the maximum intensity p₀ kN/m for equilibrium. Also, find the corresponding elastic shortening of the pile. Neglect the weight of the pile.

Axial Load 7: The concrete column is reinforced using four steel reinforcing rods, each having a diameter of 18 mm (Pig7). Determine the stress in the concrete and the steel if the column is subjected to an axial load of 800 kN. E_st = 200GPa, E_c = 25GPa.

Axial Load 8: The rigid member is held in the position shown by three A-36 steel tie rods (Pig8). Each rod has an unstretched length of 0.75 m and a cross-sectional area of 125mm². Determine the forces in the rods if a turnbuckle on rod EF undergoes one full turn. The lead of the screw is 1.5 mm. Neglect the size of the turnbuckle and assume that it is rigid. Note: The lead would cause the rod, when unloaded, to shorten 1.5 mm when the turnbuckle is rotated one revolution.

Axial Load 9: The 2014-T6 aluminum rod AC is reinforced with the firmly bonded A992 steel tube BC (Pig9). If the assembly fits snugly between the rigid supports so that there is no gap at C, determine the support reactions when the axial force of 400 kN is applied. The assembly is attached at D.

Axial Load 10: The assembly consists of two red brass C83400 copper alloy rods AB and CD of diameter 30 mm, a stainless 304 steel alloy rod EF of diameter 40 mm, and a rigid cap G (Pig10). If the supports at A, C and F are rigid, determine the average normal stress developed in rods AB, CD and EF.