What are the advantages and disadvantages of each type of support for cast-in-place cover beams and improvement measures?

What are the advantages, disadvantages and improvement measures of each type of support for cast-in-place cover beams? The following Zhongda consulting for you to introduce in detail, for reference.

1, the advantages and disadvantages of each bracket ② hoop pick frame type, in the construction of the lower part of the cover beam can still pass, does not take up the ground surface, easy to manage, but the value of the friction coefficient between the hoop pick beam in the steel hoop and the pier columns is difficult to grasp, depending on the smoothness of the surface of the pier columns or roughness varies, easy to slip out of the hoop construction accidents, the bracket can withstand the load is not high. 2、Improvement of various brackets For cast-in-place beams on the river bank, such as poor soil conditions, do the appropriate compaction and after taking measures, can also be used since the landing bracket. Such as on the ground first paved wooden boards or channel steel, or pouring concrete floor, in order to increase the foundation pressurized area. General simply supported girder bridge, in the pile foundation and pier columns are designed between the water + 'flat tie beams, so in the water and soil conditions on the ground, such as cover beams and tie beams of the height difference is not big, can use the tie beam as a stress base, in the tie beam face with landing support. But the strength of the tie beam must be calculated, if necessary, increase the tie beam cross-section or add with steel. In the use of hoop pick frame type, in order to prevent construction load caused by excessive steel plate hoop slip, it is appropriate to use high-strength bolts and double nuts to tighten the hoop, you can also use two layers of the hoop to support each other, or in the hoop at the bottom of the pre-embedded steel, in order to strengthen the support. However, the pre-buried steel should be cut after use, and do a good job of the appearance of the pier and column. If the construction load is not large, can be buried in the pier column steel, the use of buried steel to set up support brackets. Also in the buried bracket, by steel ingots. For the buried bracket type, can also be buried steel ingot and I-beam into a buried cattle leg, and then in the cattle leg on the erection of brackets and laying templates.

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