An analysis of the behavior of reinforced concrete wall-weight pieces can be finished can be divided into 3 stages: while removing the raise, move and install time and the actual time baring by each step looks at weight habits vary.1. behavior when removing the This procedure, in the event that the lubricant is not able to rotate up. The concrete wall in a vertical wall to move, so it will accept only the payload itself looks like khankwang. With support at one end and the other is a point raised the example shown in Figure 1, there are design considerations must take into consideration both the strength and the capacity requirements are as follows: unit torque bending and tensile loading capacity by checking the unit shear strength (ót) caused by bending according to equation (1) is made to be able to find the strengths of concrete pralai (ƒ ´ c). Required when a that prevents cracking crack in the wall. ót ≤ ƒr (1) Where is the modulus ƒr crack or getting your concrete tensile strength equal to 2.0 (√? Ƒ ´ c) kg/cm 2 for verification of resistance to bending moment is checking and shear occurred while removing a wall to protect the fracture according to equation (2) and (3) equation. oM n ≥ M u (2) Where o = 0.9 M n is the bending moment is u and M is the torque caused by the weight cut pralai wall, a strong factor. oV c ≥ V u (3) Where o = 0.85 V c, is the shear of reinforced concrete is equal to 2.0 bd √ (ƒ ´ c). Kg u and V are shear walls, which pralai caused by weight loss motivation factor. Figure 1 example of a concrete wall while removing the.2. lift cross-time behavior. While the wall is moving lift its own weight in a vertical position with the support-point lift only (such as that shown in Figure 2), in this case to prevent the crack would have to verify the unit tensile strength that occurs must have a value (ót) does not exceed the tensile strength is being received under the tensile strength of concrete (Direct tensile strength) according to equation (4) and check the capacity of the tensile reinforcement, you can get that to happen if the cutting occurs, cracked face according to equation (5). ót ≤ ƒr (4) By ƒr is receiving strength of concrete is equal to 1.6 √ (ƒ ´ c) or 0.1 kg/cm 2 c ƒ ´. oP n ≥ P u (5) Where o = 0.9 P n is the identification of the loading reinforcement tensile strength is equal to the tensile strength As pralai ƒy and Pu is caused by the weight of walls, which is a strong factor. Figure 2 example of a concrete wall, and the better move.3. the weight of the actual behavior While the actual concrete wall elements are different aside from baring its own weight: the weight from the roof. From the parking space on the upper floor and walls from the weight ladder which consists of a fixed weight and rest the weight (such as that shown in Figure 3) is usually for high, medium, or high buildings may take into consideration the effects of strong winds.Figure 3 example of the weight of the wall, while the actual weight.
การแปล กรุณารอสักครู่..