510results about How to "Construction quality is easy to control" patented technology

The cradle for in-situ cast bridge construction includes one bailey truss girder, four cross beams, hanging strips, anchoring ribs embedded in the formed girder, traveling tracks, round bars and balance weights connected together.

The invention discloses a quick-mounting type concrete stair and a mounting method of the quick-mounting type concrete stair. The quick-mounting type concrete stair comprises a prefabricated flight, a cast-in-place upper layer stair platform, a cast-in-place lower layer stair platform, a cast-in-place upper layer stair beam and a cast-in-place lower layer stair beam, wherein at least two flight pre-buried elements are respectively pre-buried on the vertical surfaces of the connecting ends of the prefabricated flight, the cast-in-place upper layer stair platform and the cast-in-place lower layer stair platform, the flight pre-buried elements are buried in the vertical surfaces on the two ends of the prefabricated flight, a lifting element is pre-buried on the prefabricated flight, L-shaped lapping openings lapped with the prefabricated flight are preserved on the upper corners of the cast-in-place upper layer stair beam and the cast-in-place lower layer stair beam, at least two stair beam pre-buried elements are pre-buried on an upper table top close to the lapping openings, the positions of the stair beam pre-buried elements and the flight pre-buried elements are one-to-one correspondent to each other, and the flight pre-buried elements and the stair beam pre-buried elements are welded and fixed by angle iron. With the adoption of the quick-mounting type concrete stair disclosed by the invention, the technical defects of complex construction technique of firstly binding reinforcing steel bars and pouring concrete and long time of the concrete stair, and the necessity of prefabricating of all flights, platform plates and stair beams in the traditional concrete prefabricated stair are overcome.

The invention discloses an external thermal-insulation wall of a mechanical anchoring gridding reinforcing rib inorganic modified foam thermal-insulation board. The external thermal-insulation wall is sequentially composed of a base layer wall body 4, a leveling and binding layer 5, a gridding reinforcing rib inorganic modified foam thermal-insulation board 6, plastic expansion anchor bolts 7, a thin troweling protective surface layer 8 and a surface detective layer 9 on the base wall body from inside to outside. The external thermal-insulation wall is characterized in that the leveling and binding layer 5 is adopted to bond the base layer leveling and the gridding reinforcing rib inorganic modified foam thermal-insulation board 6 in an auxiliary mode in one step, the bonding is only used for ensuring planeness during installation of an external thermal-insulation system, then the plastic expansion anchor bolts 7 are used for anchoring the gridding reinforcing rib inorganic modified foam thermal-insulation board 6, and all loads of the external thermal-insulation system are enabled to completely borne by the plastic expansion anchor bolts 7 and are directly transferred to the base layer wall body 4. Through combination of the gridding reinforcing rib inorganic modified foam thermal-insulation board 6 and the plastic expansion anchor bolts 7, tensile strength, anti-bending strength and stability of a thermal-insulation layer are largely improved.