35results about How to "Does not affect the construction period" patented technology

The invention provides a splice-type integrated inspection well. The inspection well is an integrated piece which mainly consists of a chassis, a side wall and a cover plate, wherein the side wall is an integrated side wall formed by splicing a plurality of wall plates in the peripheral direction; and the bottom end of the side wall is spliced with the chassis, and the upper part of the side wallis connected with the cover plnate to form a sealed shape. When being applied to a project, the invention has the advantages of great convenience for construction, fast field installation, clean operational environment, no need of special maintenance and no influence on construction period; since the splicing structure of split-type components is reasonable and a convex edge is in interference with a groove, the invention has good sealing performance and can effectively prevent soil pollution caused by leakage of harmful substances contained in water body in the inspection well; and PVC plastic which is adopted as the materials for the split-type components in the invention has strength and toughness, is not easy to damage when being impacted by the water body, and has corrosion resistance, thereby the splice-type integrated inspection well almost needs not to be maintained, and saves labor.

The invention discloses a tunnel face cavity processing method for shield tunnel construction. The tunnel face cavity processing method for the shield tunnel construction includes steps that 1, primary grouting, to be specific, using a grouting system to fill first cement mortar to the lower part of the cavity from the top to bottom through a soil warehouse, wherein the first grouting size is composed of cement, bentonite, coal ash, sand and water according to the weight ratio of 45-55: 45-55: 180-220: 540-660: 360-440; 2, secondary grouting, to be specific, using the grouting system to fill second cement mortar to the middle of the cavity, wherein the second cement mortar is composed of cement, bentonite, coal ash, sand and water according to the weight ratio of 90-110: 68-82: 200-280: 540-660: 420-500; 3, tertiary grouting, to be specific, using the grouting system to fill cement slurry to the upper part of the cavity. The tunnel face cavity processing method for the shield tunnel construction is simple in steps, reasonable in design, easy and convenient to operate, low in invested cost, good in use effect and capable of solving the problems of a traditional grouting strengthening method.

The invention discloses a method for exchanging a tool of a shield machine for tunnel construction, which comprises the steps of: (1) soil cabin replacement filling: performing the process of soil cabin replacement filling by using a spiral excavating machine and a slip casting system synchronously working with the spiral excavating machine; (2) advanced slip casting inside the machine: beating a plurality of slip casting pipes into the soil on the upper part of the shield machine from inner to outer inside the shield machine by respectively passing through a plurality of advanced geologic holes and then synchronously injecting cement paste into the soil on the upper part of the shield machine through the slip casting pipes by using a slip casting device till the cement paste cannot be injected any more; (3) cleaning cabin and exchanging tool synchronously: manually cleaning the cement plaster solidified inside the soil cabin and synchronously exchanging the tool mounted on the shield machine; and (4) getting rid of the difficult position of the shield machine and recovering the process. The method provided by the invention has the advantages of reasonable design, convenience for operation, low cost, high safety factor, good use effect and capable of solving the problem that the tool cannot be exchanged in the traditional tool exchanging mode under severe tool exchanging conditions.

The invention relates to a slidable construction stable annular beam applied in the process of high-rise and super high-rise framework core tube construction and belongs to the technical of structural projects. The slidable construction stable annular beam is composed of steel annular beams and fastening pieces. The steel annular beams are horizontally placed between adjacent framework columns, and the two ends of the steel annular beams are connected with the annular fastening pieces. The annular fastening pieces can be arranged on the peripheries of the framework columns in a sleeving mode and fixedly connected with the framework columns. The construction stable annular beam can slide in the height direction of a framework core tube structure system through the mode of locking and opening the fastening pieces. The slidable construction stable annular beam is constructed by full steel, the self weight is light, and site assembling and mounting are convenient and fast. The slidable construction stable annular beam only needs to be mounted at a time in the construction process of the same project. The stabilizing problem of the cantilever framework columns in the process of each construction step is solved through vertical sliding, and multiple times of disassembling and assembling are not needed. Disassembling, recycling and circular using are easy, therefore, the cost can be saved to the maximum extent, the construction period can be shortened to the maximum extent, and meanwhile the environment influence of the slidable construction stable annular beam is reduced to the maximum extent.

The invention discloses a method for WSS grouting reinforcement in a shield tunnel to assist air pressure tool change. Grouting platform, the grouting platform is located in the middle shield; 102. Drilling rig in place: install the drilling rig on the grouting platform; 103. Drilling and grouting: drill multiple grouting holes in the soil outside the shield body hole and grouting; a plurality of grouting holes are drilled through a plurality of radial holes arranged on the central shield from back to front in the soil outside the shield body; the grouting hole and the central axis of the shield body The included angles between them are all 11°-12.5°; 2. Tool change: After the grouting liquid in step 1034 is solidified, replace the tools on the cutter head. The method of the invention has simple steps, reasonable design, easy operation, high safety factor and good use effect, and can effectively solve the difficult problem of shield machine tool change when there is no reinforcement space on the ground.

The invention discloses a double shearing resistant plate transformation beam-column joint which comprises transformation column and concrete transformation beams. A pair of parallel shearing resistant steel plates are vertically arranged at the beam end of each concrete transformation beam along the length direction of the concrete transformation beam and mutually connected at the beam-column joint of the concrete transformation beam and the corresponding transformation column in a penetrating manner. The shearing resistant steel plates are additionally arranged at the ends of the concrete transformation beams, the shearing capacity of the sections of the transformation beams is improved, and requirements of the shear-compression ratio stipulated by specifications are met. Compared with conventional methods such as enlarging beam sections and concrete strength or using profile steel concrete sections, the use ratio of building space can be increased, structural weight is reduced, earthquake effect is decreased, construction cost is reduced, construction is simple, construction quality is ensured, and construction period cannot be affected.

The invention discloses a construction method of a roller-compacted concrete dam with overflowing notch concrete quickly put into storage, comprising the steps of: 1. constructing a foundation dam section; 2. constructing a transitional dam section; and 3. constructing a capping dam section. In the present invention, the conventional dam section and the transitional dam section RCC self-adaptive dam section are layered on the foundation dam section, and the transitional dam section RCC self-adaptive dam section is reconstructed to construct the transitional dam section RCC For the stepped dam section, the multi-layered RCC stepped dam section of the transitional dam section is connected successively to form a continuous construction channel for concrete transport vehicles. The gap is filled with roller compacted concrete into the warehouse, the construction period is short, the dam construction is convenient and fast, the construction efficiency is high, the construction quality is guaranteed, and the construction cost is saved.

The invention discloses a tunnel face breast wall filter cake construction process for shield compressed air operations. The process includes the steps of 1, preparing for construction, namely connecting an injection system with a plurality of injection holes through an injection pipeline, which are arranged on the outer wall of the upper middle of an earth bin of a shield machine in the peripheral direction; 2, cleaning the bin, namely cleaning the earth bin of the shield machine by a screw conveyer and the injection system; 3, performing graded pressurization, namely performing graded pressurization, including primary pressurization, secondary pressurization, tertiary pressurization and quaternary pressurization, on the inside of the earth bin by the injection system; 4, performing air replacement, namely shutting down the injection system, and replacing bentonite slurry inside the earth bin by air. The construction process is reasonable in design, simple to operate, low in input cost, high in safety coefficient and good in using effect; the practical problem that under the tool-changing severe conditions of loose stratum at the shutdown position of the shield machine, poor self-stabilization capacity of tunnel face earth and the like, existing common tool changing methods fail in changing tools is solved.

The invention provides a construction method of an underground pipe gallery through an underground concrete water pipeline. The construction method comprises the following steps that a foundation pit is excavated around the concrete water pipeline by adopting a sloping construction method; the external two sides of a slope are each provided with a conversion pool, a steel pipe is arranged between the two conversion pools, and the two ends of the steel pipe extend into the two conversion pools correspondingly; the portions, in the two conversion pools, of the concrete water pipeline are provided with a water inlet and a water outlet correspondingly; the concrete water pipeline is cut off between the two conversion pools, and cut-off openings are blocked; pipe gallery construction is conducted; and after pipe gallery construction, backfilling is conducted to the position below the concrete water pipeline by a set distance, a concrete plate belt with the thickness being the preset distance is arranged between the two conversion pools, the concrete water pipeline is recovered, the first conversion pool and the second conversion pool are dismounted, backfilling is conducted to a roadbed, and the road surface is constructed. According to the construction method, the steel pipe is adopted, after excavation of the pipe gallery is completed, the concrete water pipeline is recovered, and it is ensured that corrosion prevention and sludge removing of the concrete water pipeline after construction do not need to make a detour.