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Double-column pier system and construction method for rapid construction in high seismic risk area
PendingCN122215283ALow construction requirementsImprove economyBridge structural detailsFoundation engineering
The present application relates to a kind of double-column pier system and construction method of quick construction in high-risk seismic area, belong to the technical field of fabricated structure engineering.The double-column pier of construction includes cap beam, pier column, pile cap, pile.The pier column and cap beam are connected by grouting steel pin and slot combination, and the pier column and pile cap are connected by socket and steel pin combination, and the new socket connection node structure of pier column-cap beam / pile cap can better realize mechanical transmission, guarantee the connection reliability and seismic safety of bridge node, the recess of corrugated shape is arranged in the pile cap, and shear stud is arranged below the pier column, which can improve the connection reliability between the pier column and the pile cap, the socket depth of the double-column pier can be reduced to 0.5d by this connection method, and the top grouting method is used to ensure the grouting density.The present application can realize convenient, quick prefabrication and assembly, and has good seismic performance, which guarantees the seismic safety of the system.
Owner:FUZHOU UNIV +1
Rapid road repairing material and preparation method thereof
PendingCN119330681APromotes hydrationImprove early and late strengthSolid waste managementPhosphateRepair material
The invention discloses a rapid road repairing material and a preparation method thereof. The rapid road repairing material comprises a raw material component A, a raw material component B, a raw material component C and water, the component A comprises magnesium oxide, cement and fine aggregate; the component B comprises phosphate, microbeads, a thickening time control agent and fine aggregate; and the component C is broken stone. The setting time of the system can be adjusted and controlled within 10-40 min through the setting time control agent; by doping cement, superfine powder microbeads and reasonable graded aggregate, the compactness of the system is improved, and the water resistance of the system is improved; by utilizing the acid-base reaction principle of magnesium oxide and phosphate, the early strength and bonding strength of the system are high, the 1h compressive strength is greater than 25MPa, the bonding strength is greater than 3.5 MPa, early traffic opening is facilitated, and the system is particularly suitable for construction under the negative temperature condition.
Owner:JIANGSU VOCATIONAL & TECHNICAL UNIVERSITY OF ARCHITECTURE
Highway open-pit blasting debris interception net structure
ActiveCN224285685Ueasy maintenanceeasy to replaceBlastingStructural engineeringMechanical engineering
Owner:CHIZHOU HIGHWAY MANAGEMENT SERVICE CENT +1