6results about How to "Settlement control" patented technology

A seamless extended bridge structure suitable for soft soil areas includes a main girder, abutments, sunken approach slabs, UHPC (Ultra-High-Pressure Polymer) junction slabs, reinforced pavement layer, ground beam, and precast piles. The main girder is simply supported on supports, and adjacent main girders and the main girder and reinforced pavement layer are connected by UHPC junction slabs. One side of the sunken approach slab overlaps the back of the abutment, and the other side is fixed to the ground beam, which is supported by pile foundations. The reinforced pavement layer includes an expansion / contraction buffer zone above the sunken approach slab and a fixed zone above the ground beam; the expansion / contraction buffer zone is provided with expansion / contraction space by saw cuts, and a sliding layer is provided between it and the sunken approach slab. This scheme connects the bridge deck, UHPC junction slab, and reinforced pavement layer into a single structure using a steel mesh frame. The reinforced pavement layer absorbs the thermal expansion and contraction of the bridge, and the sunken approach slab controls uneven settlement at the bridge abutments, making it particularly suitable for soft soil areas. This disclosure also provides a construction method for a seamless extended bridge with a soft soil deck suitable for soft soil areas, reducing construction difficulty and ensuring performance.

This invention discloses a novel double-layer pipe roof reinforcement device and its implementation method. The pipe roof consists of two layers arranged in a staggered pattern. A movable sleeve is installed inside the pipe roof, and several steel nails that can pass through the pipe roof are fixed on the sleeve and inserted into the soil under grouting pressure. This effectively expands the reinforcement range of the pipe roof, enhances the self-bearing capacity of the surrounding rock, and achieves a significant reinforcement effect. Furthermore, this invention also discloses an implementation method for using this double-layer pipe roof reinforcement device, including: Step 1: Construction preparation; Step 2: Measurement and layout; Step 3: Installing measuring water pipes or sensors and installing impact drilling tools on the pipe roof steel pipes; Step 4: Installing the first section of steel pipe and starting the drilling rig; Step 5: After advancing 0.5m, verifying the construction parameters and adjusting them before continuing drilling; Step 6: Verifying the pipe roof construction parameters and checking the borehole formation; Step 7: Installing grouting pipes at the ends and filling the pipe roof steel pipes with cement grout; Step 8: Sealing the borehole.

The utility model provides a temporary supporting structure of a shallow-buried tunnel upper penetrating pipeline, and relates to the technical field of engineering construction. Comprising pipeline pile foundations, buttresses and pipeline supports, the pile foundations are arranged on the two sides of a pipeline and a tunnel, and the pipeline supports are arranged on the upper portion of the pipeline; the pipeline support comprises a triangular truss and a hanging bracket. The triangular truss is arranged by adopting a three-span continuous beam; the pipeline bracket is arranged along the pipeline; i-shaped steel cross beams are arranged between the pipeline supports and the buttresses; the pipeline support is composed of a triangular truss and a hanging bracket, and the bottom of the pipeline support is fixedly connected with the hanging bracket. The bottom end of the truss is vertically fixed on a horizontally arranged cross beam; the steel pipe pile foundation and the concrete buttress serve as a temporary supporting structure to provide a stable foundation, and fixation and adjustment of pipeline deformation are achieved through the truss and the hanging bracket.

This invention discloses an intelligent grouting control method and system for ultra-high water pressure shallow overburden shield tunneling, comprising: S1, real-time acquisition of time-series data during shield tunneling construction to form a multi-dimensional tunneling state feature vector; S2, defining the working conditions of the current construction section; S3, combining the defined working conditions with the multi-dimensional tunneling state feature vector to extract time-series features and predict the state, outputting the optimal control range of the target grouting parameters; S4, using the prediction results of the TCN-SSM model and real-time monitoring data to conduct risk assessment and calculate a risk score; S5, when the risk score reaches a preset warning threshold, adaptive optimization is performed to generate an optimal grouting control strategy; S6, real-time control of the shield tunneling grouting system is performed according to the optimal grouting control strategy, and the monitoring results after control are fed back to S4 to form a closed-loop control. This invention can improve the stability and safety of the shield tunneling synchronous grouting process.

The utility model provides an anti-settlement structure suitable for roadbed filling and excavation junction, which comprises an original ground, an excavation area and a filling area, the excavation area and the filling area are positioned above the original ground, a drainage dredging layer is arranged at the bottom of the filling area, and a group of drainage pipes are transversely arranged in the drainage dredging layer. A plurality of sets of drainage holes arranged at equal intervals are formed in the outer portion of the drainage pipe, tamping layers are laid on the drainage dredging layer, and a plurality of geogrids are arranged between the tamping layers. Through cooperation of the drainage and dredging layer, the drainage pipe, the drainage holes, the tamping layer, the geogrid and the buffer transition layer, the stability of the filling and digging junction of the roadbed can be improved, sedimentation can be effectively controlled, the tamping layer can ensure the compactness of a soil body, the geogrid enhances the anti-sliding and anti-deformation capacity of the soil body, the drainage and dredging layer can drain accumulated water in time, and the safety of the roadbed is improved. And the buffer transition layer reduces the impact of the vehicle load, so that the stability of the roadbed is guaranteed.

The utility model relates to the field of concrete layering pouring, especially concrete vibration layering pouring device, including bottom plate, electric push rod and mould etc. have at least two electric push rods of bottom plate fixed connection, the telescopic portion of all electric push rods is fixedly connected with the mould in common, the mould is equipped with mould cavity. Through first cast concrete in the temporary storage cavity, and through vibration stick one and vibration stick two remove the bubble in the concrete in temporary storage cavity, and then make the concrete that removes the bubble completely change from being in temporary storage cavity to be in mould cavity, make the inside of mould cavity from below to above cast full remove the bubble completely concrete layer by layer, since the thickness of the concrete that each layer cast in the mould cavity is thin, can complete the uniform distribution of aggregate in lower height, help control the movement and settlement of coarse aggregate (such as stone) in each layer, thereby reduce aggregate separation phenomenon.