34results about How to "Guaranteed vertical bearing capacity" patented technology

The invention provides diameter expanding equipment for a cast-in-place concrete pile, which comprises an outer sleeve component, an inner sleeve component, an outer sleeve component, an inner sleeve component and an outer sleeve component, the soil breaking structure is arranged on the lower end face of the outer sleeve component, a gap allowing concrete to pass through in the axial direction of the outer sleeve component is formed between the soil breaking structure and the outer sleeve component, and the soil breaking structure is of a structure with the wide upper portion and the narrow lower portion. The invention further provides a construction method of the cast-in-place concrete pile adopting the expanding equipment.

The invention discloses a bending and shearing separation type prefabricated assembly-type frame column and a construction method thereof. A column section comprises an upper column section body and alower column section body; the spliced position of the column section bodies is located at a bending moment anti-bending point; a horizontal bottom-end steel seal plate is pre-embedded in the bottomend face of the column section, and a downwards externally-protruding shear key is arranged on the lower surface of the bottom-end steel seal plate; a horizontal top-end steel seal plate is pre-embedded in the top end face of the column section, and a downwards internally-sunken shear key groove which is matched with the shear key is formed in the upper surface of the top-end steel seal plate; thebottom-end steel seal plate and the top-end steel seal plate are tightly attached; the shear key is downwards clamped into the shear key groove, and the shear key and the shear key groove are tightlymatched; and the top-end steel seal plate and the bottom-end steel seal plate are fixedly connected into a whole through an anti-bending piece. According to the bending and shearing separation type prefabricated assembly-type frame column, bending and shearing members are separated, the vertical bearing capacity of the frame column can be guaranteed, the anti-seismic requirement is met, the structure is simple, processing, construction and mounting are convenient, and meanwhile the economically feasible performance cost ratio is high.

The invention relates to a semi-rigid-joint integral seamless bridge structure supported by a steel plate pile and a construction method. The semi-rigid-joint integral seamless bridge structure supported by the steel plate pile comprises an end beam, a pile cap, an anchoring rod, and a steel plate pile body which is inserted into the earth surface to be used as a supporting pile; a weak shaft of the steel plate pile body is bent and connected with the anchoring rod; a web of the steel plate pile is connected with the pile cap and the end beam, and foamed rubber fills in a joint of the pile cap and the end beam to form a semi-rigid-joint structure; the steel plate pile can be directly inserted into the soil, so that the construction is convenient, and the disturbance to the soil can be reduced; in addition, the horizontal temperature deformation of the bridge can be absorbed well according to the characteristic of low lateral rigidity; the anchoring rod is arranged to avoid excessive horizontal displacement of the steel plate pile as well as preventing bulging; more important is that the longitudinal deformation capacity of the bridge is improved through the semi-rigid connection structure between the pile body and the end beam, thus the pile foundation is avoided excessive lateral displacement, the vertical bearing capacity of the pile is ensured, the stress of the whole bridge abutment is reduced, the damage of temperature deformation of the bridge to the pile body can be reduced, and as a result, the service life of the bridge is prolonged.