43results about How to "Increase horizontal resistance" patented technology

The invention discloses a composite driven snowflake pile system and a construction method. The system comprises an outer core of a cement mixing pile, an inner core of a snowflake steel sheet pile, a guide component, a pile connecting device and a cement slurry state monitoring system; a snowflake steel plate A pile cap is installed on the top of the inner core of the pile, and the pile cap is connected with the bearing platform; when the outer core of the cement mixing pile exceeds the set length, the inner core of the snowflake-type steel sheet pile is driven into the pile through the pile connection device and the guide assembly by means of segment connection. The outer core of uninitialized cement mixing pile. The invention combines the bearing characteristics of the cement mixing pile and the snowflake steel sheet pile, makes up for the insufficient lateral friction resistance and insufficient structural stability caused by the relatively small volume of the high-strength steel sheet pile, and improves the bearing capacity of the pile body. The invention balances the construction cost, enhances the bearing capacity of the pile body, has a wide range of applications, is used to solve the problems of soft soil foundation reinforcement, foundation pit support and differential settlement of bridge heads, and has broad application prospects in the fields of bridges, foundation pits and roads. .

The invention provides a method for manufacturing a PHC tubular pile in a soft soil region by chambering and grouting. The method comprises the following steps that: the pile end at the base of the PHC tubular pile sunken in construction is provided with an enlarged head plate; the enlarged head plate is subjected to chambering to form a square, circular, triangular or elliptical gap in the construction process; in the pile sinking process, grout, cement mortar or residual grout scrap is filled in the gap; the grouting materials achieve the function of protecting the wall in the pile sinking process; and after being solidified, the grouting materials can increase the resistance of the pile end and the frictional resistance of the pile side and improve the interaction between the pile and soil. The method has the effect of providing the simple method for improving the compression resistance, pulling resistance and horizontal force resistance of the PHC tubular pile in the soft soil region, fully exerts the strength of a tubular pile body, can reduce the friction of the soil on the pile body in the pile sinking process, protects an anticorrosive dope, has the action of seepage protection on cracks of the pile body, improves the impermeable effect; and the strength of the grouting materials after being solidified reaches between 3 and 15 MPa. With the method, the bearing capacityof the PHC tubular pile can be improved to 150 to 300 percent; the comprehensive construction cost can be saved by 20 to 60 percent; and the social economic benefit is improved.

An offshore wind power monopile-friction wing composite foundation and its construction method, which includes a single pile and a friction wing, the friction wing is connected to the single pile through a force transmission tube, and the conical transition section of the single pile goes deep into the bearing layer of the seabed and is located at The force transmission tube of the friction wing in the force-bearing layer is in close contact with the conical transition section of the single pile, the side wings of the friction wing are connected to the outer wall of the force transmission tube, and the ring wings are arranged inside the included angle of the side wings. The friction wing of the present invention is a penetrating structure in the axial direction, which is convenient to pass through the seabed silt layer and embed into the force-bearing layer; The soil arch effect is generated between the wings, which significantly improves the resistance of the soil. The friction wing increases the interaction area between the structure and the soil, and improves the bearing capacity of the single pile-friction wing composite foundation.

The invention relates to a combined column and foundation node structure with horizontal seismic performance and a construction method thereof. The combined column and foundation node structure comprises a combined column and a foundation, wherein the connecting nodes of the combined column and the foundation are integrally connected through a poured concrete layer, at least two vertical steel plates are transversely buried inside the concrete layer, a plurality of studs are arranged on the surface of each vertical steel plate in a matrix manner, the studs vertically penetrate the surface of the vertical steel plate and are welded to the vertical steel plate, nuts are welded to two ends of the studs, and a sleeve which is manufactured through ultrahigh-performance concrete pouring and used for being integrally connected with the periphery of each stud is arranged on the periphery of the stud. The combined column and foundation node structure has the advantages that the structure is convenient in construction and applicable to house building and bridges to increase the horizontal seismic performance of houses and the bridges, and the strength and ductility of the combined column and the foundation nodes are increased.

The invention discloses a local buoyancy ocean platform of offshore wind power, a bridge and an ocean building, and a construction method. The platform comprises at least one buoyancy cylinder, wherein the buoyancy cylinders are arranged vertically; the bottoms of the buoyancy cylinders are conical; and the buoyancy cylinders are hollow cylinders. Buoyancy of the buoyancy cylinders can be used for offsetting the weight of partial hydraulic buildings; small-bore bored piles or small-bore driven piles are arranged at the bottoms of the buoyancy cylinders, and fixed with seabed bed rock or a supporting layer, and support an external force together with a soil layer at the conical bottoms of the buoyancy cylinders; a tilting load borne by a whole foundation is converted into a vertical pressing and up-pull load of a single buoyancy cylinder foundation by a multi-buoyancy-cylinder space structure; the bearing capacity and the tilting resistance of the foundation are very high; multiple platforms can be connected into a multi-platform system; the platform can be cast in land, prefabricated, or assembled on a coast, and then hauled, towed and floated to a mounting position; and the platform is applied to ocean green energy sources such as the offshore wind power, the bridge and the ocean building with a soil layer of above 5m and water depth of about 5m to 50m, and has great potential economic benefits.

The invention discloses an arch bar foundation the foundation plate of which comprises a plurality of arch bars with arch sections. As the arch bar shape of the arch bar foundation of the invention has better structural stiffness and better stability than the plate shape of the traditional foundation, capabilities of horizontal force resistance, slippage resistance, differential settlement reduction and the like of the foundation are improved. The invention also provides a construction method of the arch bar foundation, comprising the following steps: 1) leveling the land; 2) producing arch groves; 3) casting and pounding a cushion coat; 4) arranging an arch bar moulding board; 5) arranging a foundation beam moulding board; 6) binding the arch bar and foundation beam steel; 7) casting andpounding arch bar concrete; and 8) casting and pounding foundation beam concrete.