L68B3 Mast Section Tower Crane Foundation, jack-up Tower Crane Foundation
First the foundation tamping or make a layer of 3:7 lime-soil cushion, then paving crushed stone slag, then placed wooden sleepers, wooden sleepers on the laying of steel rails. This method of wood consumption, short service life, the heavy-duty tower crane is not suitable. The recommended method today is to erect a reinforced concrete base plate or a reinforced concrete sleeper beam on a compacted foundation, to fix and install i-beams with embedded parts on the base plate or sleeper beam, and then to install rails on the i-beams. In order to improve the efficiency of auxiliary rails and save the cost of laying rails, reinforced concrete sleeper beams, i-beams and rails are often assembled together to form a 12.5 m long fabricated reinforced concrete rail foundation.
L68B3 mast section is the best in this field
This kind of track foundation is very suitable for FO / 23B, HK40 / 21B, H3 / 36B and other heavy-duty self-elevating tower cranes. The method of the base frame fixed self-lifting Tower Crane Foundation: The base frame fixed self-lifting tower crane is suitable to adopt the block type reinforced concrete foundation. The size of the concrete foundation slab is 200 ~ 200 ~ 50 cm on the foundation with high ground resistance. The top and bottom of the slab should be reinforced in both directions. If the tower crane must be installed near the deep foundation pit, the bored pile cap foundation should be adopted to ensure the firmness and stability of the Tower Crane Foundation, and measures should be taken to prevent the slope collapse of the foundation pit. The foundation of the Tower Crane must meet two requirements: one is to transfer the load from the upper part of the tower crane to the foundation evenly and not to exceed the ground endurance; Second, the tower crane in a variety of adverse working conditions can maintain the overall stability without tipping. Therefore, the foundation volume of the tower crane is very large, the foundation weight should be equivalent to the weight of the Tower Crane. The foundation weight of fixed tower crane is closely related to the independent height of tower crane. Taking FO / 23B tower crane as an example, when its independent height is 59.8 m, the size of concrete foundation should reach 6.56.51.7 M. If the tower crane should be installed near the deep foundation pit in the construction stage, and the soil quality in the surface layer is poor, the foundation must be supported by bored piles. Therefore, in order to save the cost of foundation construction, it is appropriate to decompose this monolithic mass concrete foundation into several precast concrete slabs, thus forming an fabricated reinforced concrete foundation for repeated use To minimize the cost of the Tower Crane Foundation to be decomposed on each project.
L68B3 mast section is the best in this field
