34results about How to "Improve the bearing capacity of the foundation" patented technology

The invention discloses an underpinning reinforcement method for an existing building structure. Brackets are arranged and reinforced on an original supporting structure column, and a steel pipe supporting device is additionally arranged; enlarged section reinforcement is conducted on the basis of an original pre-reserved structural column, thus the purpose of improving the basic bearing capacityis achieved, and the design requirements of the basic bearing capacity after underpinning are met. Compared with an existing underpinning technology, the underpinning reinforcement method fully utilizes the original structure, damage is small, and the new structure is basically consistent with the original structure in form and coordinates with the original structure for common bearing; before theunderpinned column is removed, a foundation of the pre-reserved structural column is reinforced, reinforcement of the enlarged section and additionally arranged reinforcing bars is conducted, the bearing capacity is increased, and stiffness is improved; the overall economic adaptability is high, the cost is low, economic rationality is achieved, the construction period is short, and the influenceon adjacent surrounding shallow foundations is small; and the underpinning reinforcement method is suitable for application of underpinning transformation of buildings such as large powerhouse structures, gymnasium structures, large shopping mall structures, subway structures and various broken column transformation use spaces.

The invention discloses a composite inclined column expansion foundation structure applied to a power transmission line in a permafrost region. The composite inclined column expansion foundation structure comprises four reinforced concrete inclined columns which are arranged according to a gradient inclination angle of a tower and upper part structure, wherein the reinforced concrete inclined columns stretch to be below an upper limit of permafrost; a horizontal reinforced concrete bottom plate is laid at the bottom of each reinforced concrete inclined column; the body of each reinforced concrete inclined column is wrapped with a glass fibre reinforced plastic sleeve; a space among the four reinforced concrete inclined columns is filled with coarse-particle soil; the filling depth of the coarse-particle soil is from the upper limit of permafrost to a natural surface; and a rubble layer is laid on the coarse-particle soil. According to the invention, the artificial upper limit of permafrost is increased, a horizontal action force transferred to the foundation from an upper tower is reduced, the stability of a tower foundation and the bearing capacity of a ground foundation are enhanced, and the up-pull possibility of the tower foundation, and the freezing damages of a project are reduced.

The invention relates to a straw crushing and molding equipment, which includes a car body, a support frame is installed on the front side of the car body, a grass rake frame is rotatably installed on the support frame, and a straw gathering rotary blade is arranged on the rear side of the grass rake frame. The stalk gathering revolving blade is installed on the supporting frame for rotation. There is a lifting cylinder on the rear side of the straw gathering revolving blade, and a crushing cabin is fixed on the car body. A crushing frame and a crushing frame are installed. The crushing frame is located on the front side of the crushing frame. A silo is installed at the tail of the crushing cabin. leaves, crushing frame and the motor that the crushing frame rotates, and the front side of the car body is installed to connect the traction hook of the traction vehicle. The equipment can be used to provide preparation materials for cement-straw solidified soil, in which straw particles can play a role in improving the strength of in-situ solidified silt or soft soil, and facilitate the smooth entry of construction machinery into the site for subsequent operations.

The present invention provides a novel seismic-isolation composite foundation and its construction method. The novel seismic-isolation composite foundation of the present invention comprises, from top to bottom: an upper structure, a raft, a fiber-solidified soil layer, a double-layer wrapped geotechnical composite crushed stone layer, solidified soil layer, and piles, a section of the top is reserved for embedding in the solidified soil layer, and the reserved height accounts for 30% to 60% of the height of the solidified soil layer. The raft is placed in the center of the pile group and It is buried in the fiber-solidified soil layer, and the fiber-solidified soil is spread on the top of the raft. The seismic-isolation composite foundation of the present invention can increase the bearing capacity of the foundation, improve the uneven settlement of the entire system, effectively prevent and control horizontal displacement, prevent pile top penetration damage, absorb and dissipate seismic energy, and constitute a new type of high-efficiency seismic-proof high-strength seismic-isolation composite foundation. basic system.