3results about How to "Low technical requirements for construction" patented technology

The invention discloses a novel reinforced concrete prefabricated pipe gallery construction method, relates to the technical field of industrial and civil structure reinforced concrete prefabricated pipe galleries, and solves the technical problems of short construction period and low cost. The method comprises the steps that firstly, concrete beams and columns of the reinforced concrete pipe gallery are split according to a construction drawing and then prefabricated in a prefabrication yard; 2, after construction of the cup foundation is completed, the corresponding prefabricated columns and prefabricated beams are transported to the side of the foundation, the prefabricated columns are hoisted and fixed in the cup foundation, temporary inclined struts are installed, then the prefabricated beams are installed and fixed layer by layer through an elevator or a crank arm vehicle, and formwork clamps are installed at the beam column connecting joints; thirdly, after completion, high-strength-grade non-shrinkage concrete is poured, and therefore the transverse frame without weakening of the integrity is formed; the construction method is simple and easy to operate, and the requirement for the construction technology is not high.

According to the drilling and blasting method railway tunnel local prefabricated bottom structure and the construction technology, a prefabricated bottom structural part is provided with a tensioning hole and a through hole, and a bolt penetrates through the tensioning hole and then is connected with a nut in a screwed mode; self-compacting concrete and a concrete cushion layer are arranged between the prefabricated bottom structural member and the tunnel inverted arch. The first concrete mounting block is connected with the prefabricated bottom structural part and the tunnel arch wall. The concrete mounting block II is simultaneously connected with the prefabricated bottom structural member and the concrete mounting block I; the tunnel drainage and cable groove is connected with the first concrete mounting block and the second concrete mounting block at the same time. The bottom structure of the tunnel comprises the prefabricated bottom structural part, the first concrete mounting block, the second concrete mounting block and the tunnel drainage and cable groove, the bottom structure of the tunnel is simple, and the workload is small; the construction process of the tunnel bottom structure is simple, the construction efficiency is high, the construction quality is stable, and the service life of the tunnel bottom structure, the tunnel inverted arch and the like can be prolonged.

The utility model discloses a kind of steel outer package type sound insulation assembly type wall connecting structure, it is related to assembly type building wall technical field, technical scheme is, including wall, center fixed connecting piece, high-strength tie rod;Four adjacent walls are connected by the center fixed connecting piece, wall four edges are provided with center fixed connecting piece connecting groove, round recess is provided at wall four corners, center fixed connecting piece center is equipped with hollow cylinder, round recess size is 1 / 4 hollow cylinder, high-strength tie rod is set in hollow cylinder, high-strength tie rod both ends are provided with backing plate and high-strength bolt.The beneficial effects of the utility model are: the scheme is provided with sound insulation cotton at connecting place, solve the problem that traditional connection mode is poor in sound insulation effect at joint, ensure the sound insulation effect of wall joint, also ensure the sound insulation effect of whole wall.