3results about How to "Reduce on-site construction workload" patented technology

The utility model provides an external prestressing reinforcing device for a simply supported beam of a railway, which comprises anchoring devices, a steering device and a prestressing tendon, and the anchoring devices are respectively arranged at two ends of the simply supported beam of the railway; the steering device is connected with the railway simply supported beam and located in the area between the two ends of the railway simply supported beam. The two ends of the prestressing tendon are connected with the anchoring devices respectively and arranged in the steering device in a penetrating mode. By the adoption of the external prestress reinforcing device for the railway simply-supported beam, the bearing capacity of the railway simply-supported beam can be remarkably improved, the bending resistance and the shearing resistance of the railway simply-supported beam can be improved, the external prestress reinforcing device is particularly suitable for a large-span bridge, and in addition, the external prestress reinforcing device for the railway simply-supported beam can be used for reinforcing the external prestress of the railway simply-supported beam. And the damage to the concrete during on-site construction can be reduced.

This invention discloses an integrated tidal flat photovoltaic power station support foundation structure and its construction method, comprising a root pile foundation and a support structure. The main beam of the support structure is installed on top of a pair of columns and reinforced by diagonal bracing. A gap is left between the pair of columns, and the sleeve and collar are installed in the gap, with the sleeve on top and the collar on the bottom. The sleeve sidewall has multiple insertion holes arranged sequentially from top to bottom. The root pile foundation includes, from top to bottom, a pile top, a bamboo-shaped main pile, and a cross plate at the pile bottom. A tubular auxiliary pile is installed outside the bamboo-shaped main pile. The sleeve and collar of the support structure are respectively installed on the pile top and the bamboo-shaped main pile. The pile top has a corresponding waist-shaped hole, which is fixed to the sleeve by pins. This invention is simple to construct, requires less labor, and has strong structural durability. It is suitable for coastal intertidal tidal flat areas with poor foundation bearing capacity, strong environmental corrosivity, large tidal fluctuations, and significant extreme wind loads.

The invention relates to the technical field of heat pump heat supply, in particular to an energy-saving carbon dioxide air source heat pump system for efficient heat supply, which is characterized in that a carbon dioxide air source heat pump unit is a system heat source; the heat supply pipeline is connected with the heat pump unit and a user heat utilization place; the water return pipeline is connected with a user heat utilization position and the large-temperature-difference heat exchanger and then connected to the water inlet side of the heat pump unit, and a main circulation loop is formed. The large-temperature-difference heat exchanger is arranged in the water return pipeline and used for recovering waste heat from the main circulation loop and transmitting the recovered heat to bypass water flow to form high-temperature waste heat recovery water flow. The temperature adjusting device is arranged on the heat supply pipeline and used for receiving the primary hot water and the high-temperature waste heat recovery water flow and conducting mixing or heat exchange on the two water flows based on the heat using requirement of a user. The intelligent control module collects system operation parameters, and the heat consumption requirements of users are matched through a dynamic optimization control algorithm. Therefore, the overall heating performance coefficient of the hot water system is remarkably improved, and the purposes of energy conservation and emission reduction are effectively achieved.