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

The invention discloses a construction method for underground building combining a rotary jet grouting open caisson method and a semi-inverse method, which relates to the building construction technical field. An underground structure outer wall is integrally preformed on the ground, and the construction method comprises the following construction steps: firstly, a groove is dug, and a guide wallis constructed; secondly, prestress is applied to a preformed underground structure outer wall: after the concrete strength of the preformed wall reaches 70 percent, the prestress is applied and the preformed underground structure outer wall is locked with a prestressed anchorage device; thirdly, jet grouting open caisson is performed to the whole preformed outer wall; fourthly, when the preformed outer wall is sunk to a set depth, mortar is changed to perform the mortar solidifying at the groove bottom and on the groove wall; fifthly, the underground structure is constructed through the semi-inverse method. The construction method adopts the integral jet grouting open caisson method to perform the underground structure, which not only saves a great amount of construction investment and guarantees the security and the quality, but also accelerates the construction progress and shortens the construction period. The construction method is particularly suitable for the rapid constructionof underground buildings, such as the basement of a large-scale civil architecture, a public underground garage and a subway station.

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 provides diameter expanding equipment for a cast-in-place concrete pile. The diameter expanding equipment comprises an outer sleeve component, an inner sleeve component adapted to be mutually nested with outer sleeve component, and a soil breaking structure, 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.

A large-span multi-curvature thin shell reinforced concrete structure construction method specifically includes the steps of making drawings, manufacturing and building glass fiber reinforced plastics, cleaning a construction site, carrying out paying-off positioning according to an established curvature and contour line data, setting up supporting frames, setting up thin shell structured supporting frames, manufacturing thin shell structured formworks, binding shell reinforcing steel bars, pouring concrete, dismounting formwork supporting frames and the like. According to the construction method, a contour line mode is adopted to carry out disassembling on the formworks by being coordinated with a control line, so rapid erection is achieved and the construction time is saved. The portion, close to the bottom of a shell is made of dual-side glass fiber reinforced plastic formworks, and formwork sealing is carried out by using steel wire gauze arranged at intervals, so vertical bearing capacity is guaranteed, the problem in large-gradient concrete construction is solved, and the slanting thrust of the structure on frame bodies is removed effectively. In addition, concrete subsection symmetrical pouring is adopted, so the stress of a supporting system can be balanced, and the problem of difficult construction caused by big shell size and steep gradient can be solved.

A high-load full-sealed disc structure vibration isolation device mainly includes a cover plate, a disc structure vibration isolator and a bottom basin. The vibrator is a center-symmetrical structure, its central part protrudes upwards to form an elastic deformation part, and the outer edge of the elastic deformation part extends outwards to form a support part. The center of the elastic deformation part is a support platform, and the upper surface of the support platform and the cover The lower surface of the plate contacts and cooperates with each other. The lower surface of the support platform does not contact the upper surface of the bottom basin. A plurality of holes are opened on the segment, and the thickness of the cone segment gradually decreases from the support platform to the support portion. The invention realizes the vibration isolation effect in the form of a pure structure, is placed on the support part of the vibration-isolated body, and the vertical stiffness is appropriately reduced, and the vertical fundamental frequency is far away from the main frequency of the vibration of the upper structure, thereby realizing the vertical vibration isolation function.

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.