5results about How to "Operational impact is small" patented technology

The present invention discloses a method for lengthening a beam in the air, a beam, and a crane, wherein the method for lengthening a beam in the air comprises the following steps: S1, cutting the beam, cutting the beam along the cutting line into a beam front section and a cantilever section; S2, forming a lengthened cantilever section, welding the lengthened section and the cantilever section into a lengthened cantilever section; S3, installing the lengthened cantilever section, installing the lengthened cantilever section on the beam front section to form a lengthened beam; S4, installing the lengthened beam, replacing the front row of tie rods of the beam, and installing the lengthened beam on a crane. The present invention also discloses a beam and a crane, wherein the beam is the lengthened beam formed by the above method, and the crane is a crane including the lengthened beam. The method for lengthening a beam in the air, the beam, and the crane of the present invention do not need to use a large crawler crane or disassemble the beam, wire rope, etc. during the lengthening process of the beam, thereby solving the problems of high transformation cost, long time consumption, and large site occupation.

The application discloses a kind of control area quick recovery method of non-count axis CBTC system, comprising: step S1, adjacent control area real-time intercommunication communication train and the position and route information of non-communication train;Step S2, after target control area restarts completion, the communication link with upstream control area and downstream control area is restored, and the tracking of communication train in this control area is restored;Step S3, based on the information of upstream control area and downstream control area synchronization, the total number of train in target control area and the number of non-communication train are calculated, and then the communication train and non-communication train in target control area are distinguished;Step S4, for the communication train that has been restored tracking, the route thereof is automatically restored according to the original route information synchronized;Step S5, for non-communication train that has not been restored tracking, the position thereof is preset as the envelope within the original route range, and the original route is restored after artificial confirmation.The application realizes the quick and accurate recovery of train position and route after control area restarts, and reduces the influence on operation.

The application discloses a kind of construction methods for reducing existing railway pier cap, comprising the following steps: S1, in the range of existing pile foundation, construction new pile foundation is added;Construction newly-built cap;S2, construction first-pouring part of lengthening pier body;Construction support system on newly-built cap;S3, according to design requirements, simultaneously apply jacking force of jacking equipment to support system to tighten existing cap;S4, cut off the connection between existing pile foundation and existing cap, then simultaneously apply jacking force of jacking equipment, remove the stress of support system;S5, remove support system and existing pile body above the top surface of newly-built cap, cut off the excess part of existing cap;S6, on the cut-off surface of existing pier body and excess part of existing cap, plant reinforcement, construction outer package post-cast part of lengthening pier body.The application uses existing cap, existing pile foundation and newly-built cap with reduced new pile foundation, lengthening pier body to carry out two stress system conversions, instead of the construction of temporary portal pier, reduce engineering quantity and construction difficulty.

The application provides a train control method and system, which comprises the following steps: in the case that a train running in a full automatic mode (FAM) or a peristaltic mode (CAM) loses positioning, determining whether the train meets the condition of entering a remote speed limit mode; in the case that the train meets the condition of entering the remote speed limit mode, sending an application of entering the remote speed limit mode to a train intelligent integrated automatic system (TIAS) of the train; after receiving information of agreeing to the application sent by the TIAS, sending the application to a zone controller (ZC) of the train; receiving a latest safety envelope of the train maintained by the ZC when the ZC agrees to the application, updating a current safety envelope of the train according to the latest safety envelope, and sending the current safety envelope to the ZC; and receiving a movement authority calculated by the ZC according to the current safety envelope, and controlling the train to run at a limited speed according to the movement authority in the remote speed limit mode. The application reduces the influence on the operation of the train and facilitates the staff to get on the train for rescue.

The invention relates to an existing subway structure side wall holing construction method, and relates to the technical field of tunnel civil construction. The side wall holing construction method of the existing subway structure comprises the following steps that S1, foundation pits are excavated, specifically, the foundation pits are excavated on the two sides of the existing subway structure, and the whole side wall to be holed is exposed through earth excavation; during foundation pit supporting and earth excavation, graded gravel is reserved at the top of the subway structure to be piled and loaded so as to prevent the floating phenomenon of the existing subway structure; s2, holing preparation is carried out; the top of the existing subway structure is sequentially subjected to earthwork unloading in a regional mode according to the holing sequence, drilling cutting and block removing are conducted on the side wall of each holing region through a water drill, and then hole edge chiseling is conducted; s4, wall beam construction; and S5, waterproof construction. According to the existing subway structure side wall holing construction method, the influence on operation of an existing subway can be greatly reduced, and floating and cracking of the existing subway structure can be effectively prevented.