31results about How to "Timely reinforcement" patented technology

The invention discloses a large-slope upside-down steel anchor-spray support structure for a deep foundation pit, which supports the support pit formed by excavating the basement in the foundation pit at a position to be protruded. The support structure includes: A first support pile and a second support pile, the second support pile is correspondingly arranged at a corresponding position of the support pit and the elevation of the second support pile is lower than the first support pile; The crown beam on the top of the first support pile; the upper support beam on the inner wall of the support pit, the upper support beam is supported on the inner wall of the support pit and the upper support The end of the beam protrudes from the support pit and is fixedly connected to the crown beam on the first support pile; the protective plate is arranged at the bottom of the upper support beam and is attached to the inner wall of the support pit ; the lower support beam on the second support pile, the lower support beam is provided with a certain distance from the inner wall of the support pit, and the lower support beam and the upper support beam pass through The protective plate is fixedly connected.

The invention discloses a high-strength rapid-hardening shotcrete and a method for sealing and reinforcing the surrounding rock of a soft rock tunnel, wherein the high-strength rapid-hardening shotcrete includes water, cement, fly ash, gravel and sand; the weight of cement and fly ash The ratio is 0.92:0.08, the ratio of the weight of water to the total weight of cement and fly ash is (0.35~0.45):1, and the ratio of the weight of gravel to the total weight of cement and fly ash is (1.35~1.4): 1. The weight ratio of sand to the total weight of cement and fly ash is 2.02:1. The concrete of the present invention has a fast setting speed, and the sprayed concrete can be initially set in 35±5 minutes. The average compressive strength of the shotcrete 4h cube is ≥20MPa, and the average compressive strength of the 24h cube is ≥30MPa, which can timely and quickly seal and reinforce the excavation surface , high early strength. In the tunnel construction, the initial spraying of high-strength and fast-hardening shotcrete and the re-spraying of ordinary shotcrete make the "young" and "old" strengths of the shotcrete effectively connected, and realize the optimization of the functionality and economy of the shotcrete.

The invention discloses an auxiliary device for preventing deformation of adjacent building foundation of an urban railway. The auxiliary device comprises a base, wherein a fixing block is welded to the middle of a top end of the base, a plurality of inserting grooves are formed in the middle of a top end of the fixing block at equal intervals, balancing weights are embedded into the inserting grooves, and a wedge-shaped block is arranged on one side of the fixing block; a plurality of limiting grooves are formed in a bottom end of the wedge-shaped block at equal intervals, a plurality of limiting blocks are fixedly arranged on one side of the base at equal intervals and connected with the corresponding limiting grooves in an embedded mode, a plurality of sliding grooves are formed in the other side of the top end of the base at equal intervals, sliding blocks are slidably connected into the sliding grooves, and fixing rings are fixedly installed on one sides of the sliding blocks. By means of the fixing blocks and the wedge-shaped blocks arranged at the top end of the base, auxiliary supporting can be conveniently conducted on the foundation on the side face, by means of the balancing weights embedded in the fixing blocks, the supporting strength is increased, stability of the foundation is guaranteed, and it is avoided that normal running of urban railways is affected by collapse of the foundation.

The invention belongs to the technical field of steel coil transportation and particularly relates to a steel coil transportation auxiliary device. The steel coil transportation auxiliary device aimsto solve the problems that in the prior art, when a steel coil is fixed, the steel coil needs to be bundled with a steel wire rope by several circles to a truck, and when the truck turns, the steel wire rope can be snapped due to large inertia. According to the technical scheme, the steel coil transportation auxiliary device comprises a channel steel base and a steel coil. A storage battery and aprocessor are arranged on the inner wall of the bottom of the channel steel base and are close to the edge portion. The middle and the portions, close to the two side edges, of the upper surface of the channel steel base are both provided with supporting plates in a welded manner. The same upper base plate is welded to the top ends of the three supporting plates. The steel coil transportation auxiliary device can rapidly and tightly fix the left side and the right side of the steel coil, stress detectors on H-type steel web plates can transmit the pressure force of the steel coil on supportingrods and the stress condition of the supporting rods in time, and when the stress of the supporting rods excessively exceeds the limit value of the supporting rods, the stress detectors can transmitsignals to the processor in time, and then an alarm is triggered to notice a transportation driver to conduct reinforcing treatment in time.

The invention discloses a self-adaptive steel structure connecting joint and a connecting method thereof and belongs to the technical field of steel structures. According to the self-adaptive steel structure connecting joint, a fourth connecting mode of H-shaped steel can be provided, the high-strength connecting joint is adopted for performing wrapping connection on the H-shaped steel, the H-shaped steel is connected conveniently in a high-temperature phase shape by depending on an enhanced double-way memory effect of a shape memory alloy, the H-shaped steel can be effectively retained and abutted in a low-temperature phase shape, and expansion connection between a pair of H-shaped steel and the connecting joint is achieved; meanwhile, specially-treated positioning rods are arranged for auxiliary purposes, and the positioning rods have the function of indirectly detecting H-shaped steel stress transmission while having the function of positioning the H-shaped steel; and on the one hand, the strength of connecting between the H-shaped steel can be remarkably improved, on the other hand, stress transmission between the H-shaped steel and non-normal detection are facilitated, and technicians can timely perform reinforcing and strengthening.

The invention proposes a working platform for tunnel support construction, which includes a mobile door frame, on which a concrete spraying device, a bolter device and a steel arch assembly device are arranged; the steel arch assembly The device includes a moving mechanism for moving the steel arch and a grabbing manipulator for grabbing the steel arch, and the grabbing manipulator cooperates with the moving mechanism. The invention mechanizes the assembly process of the steel arch by installing a steel arch assembly device on the mobile portal frame, and integrates the anchor drilling device and the grouting device. The system has a high degree of integration, and can work collaboratively and efficiently to improve work efficiency. And the arch support is timely, the support efficiency is high, and the quality is more stable, and the safety of tunnel construction is improved.