17results about How to "Reliable construction" patented technology

The invention discloses an underground diaphragm wall steel bar lap joint bending resistance calculation method based on big data, and belongs to the technical field of underground engineering design. In order to solve the problems that the condition change of a construction site is difficult to respond in real time, the construction parameters are difficult to dynamically adjust and the complex construction environment is difficult to adapt, the data set quality and the bending resistance prediction precision are effectively improved through multi-source data acquisition and key feature screening, and a physical prediction model of a steel bar lap joint is established. According to the method, factors such as stress transmission and binding power are comprehensively considered, so that the model has good adaptability under different working conditions, model parameters are dynamically adjusted, the model responds to changes of environments and construction errors in real time, the weight is automatically adjusted when monitoring data fluctuates, accurate prediction of the bending resistance is achieved, potential failure risks are effectively prevented, and the construction quality is improved. And a failure mode pre-judgment and multi-level risk management mechanism helps a construction team to quickly identify a high-risk area and flexibly adjust a construction scheme.

The invention discloses a bridge section steel expansion joint maintenance construction method based on a novel formwork system, and particularly relates to the technical field of bridge section steel expansion joint maintenance construction, and the method comprises the following steps: S1, preparation before construction, S2, on-site construction, and S3, construction summarization. When a traditional profile steel expansion joint is maintained and constructed, (1) flexible materials such as foam plates and cloth which are low in strength and not easy to fix are adopted to fill the joint and support concrete, the concrete in the expansion joint is easy to expand, leak slurry, block and pollute a lower bridge structure, and the working performance of free expansion of the structure is influenced; and (2) the gaps and the retaining concrete are filled with battens or square timbers, so that the installation difficulty is high, the formwork is easy to deviate, and the difficulty of taking out the gap filling material in the later period is high. According to the method, the maintenance construction method that a traditional joint filling material is replaced with the rail inner supporting type aluminum formwork system is adopted, operation is easy, the construction speed is high, precision is high, the side face structure size of the post-cast strip joint can be accurately controlled, and the phenomena of concrete formwork expansion and slurry leakage are eliminated; by changing the specifications of the self-sealing turn buckles, the formwork system can be suitable for construction of various types of profile steel expansion joint structures; meanwhile, in the construction process, through combination of the formwork and the horizontal laser instrument, a traditional rough construction method for controlling the profile steel and concrete surface elevation and flatness is changed, and the overall maintenance construction quality of the profile steel expansion joint structure is improved.

The invention discloses an anti-loosening mechanism, comprising an anti-loosening nut and an anti-loosening washer, wherein the anti-loosening nut and the anti-loosening washer cooperate with each other through a spiral inclined surface, so that an anti-loosening resistance torque is generated between the anti-loosening nut and the anti-loosening washer. The invention overcomes the loosening torque generated by mechanical vibration, has a good anti-loosening effect, and has a simple structure, low production cost, and is easy to operate, and is suitable for large-scale promotion and application.

The utility model discloses a kind of slope roof concrete semi-automatic shakeout machine devices, relate to concrete construction technical field.The utility model includes main rod, and the side of main rod is provided with shakeout component, and the bottom of main rod is provided with telescopic component, and the bottom of telescopic component is provided with shock plate, and the top of shock plate is provided with vibration machine.The utility model uses, by using G character clip, channel steel is fixed on main girder reinforcement, and builds stable operation frame for shakeout operation, guarantees construction safety and stability;Start vibration machine to make shock plate vibration reinforcement cement surface, simultaneously, motor drives gear to move, and then drive main rod and shock plate displacement, realize to different position cement surface automatic, efficient shock, this collaborative operation mode improves construction efficiency, guarantees cement surface shakeout quality, make slope roof construction more accurate, reliable.

The utility model discloses a combined structure for reconstructing a flood drainage system in a tailing pond. The combined structure is formed by combining a steel blade angle open caisson (1), a stilling well (4), a pile foundation (6), an annular bearing platform (7) and a new flood drainage well (8). The steel blade angle open caisson (1) is arranged above one side of the original drainage culvert pipe (9), the stilling well (4) is arranged below the interior of the steel blade angle open caisson (1), and the bottom side of the stilling well (4) is communicated with the original drainage culvert pipe (9); the pile foundations (6) are annularly distributed on the periphery of the steel blade angle open caisson (1); the annular bearing platform (7) is cast and supported on the pile foundation (6); a new flood drainage well (8) is constructed and supported on the annular bearing platform (7); and angle steel (2) is welded at the edge foot of the steel edge angle open caisson (1). On the basis of an original drainage culvert pipe, the open caisson is used for transformation, the construction period can be effectively shortened, the construction cost is reduced, the requirement for normal tailing drainage of a tailing pond is met, the requirement for flood drainage in a heavy rainfall season is also met, and economic benefits are remarkable.

The utility model discloses a metro station prefabricated water retaining ridge, an off-wall ditch water retaining ridge structure and a metro station structural slab reserved hole water retaining ridge structure, and belongs to the technical field of metro station drainage. The prefabricated water retaining ridge for the subway station is characterized by comprising a water retaining ridge body which is prefabricated by adopting reinforcing steel bars and concrete and has an L-shaped section, one right-angle side of the water retaining ridge body is a base, the other right-angle side of the water retaining ridge body is a vertical back, the bottom of the base is provided with an inward groove which extends from one end of the base to the other end of the base, and the water retaining ridge body is provided with an opening. The two ends of the base are each provided with a bolt hole, and a grouting hole communicated with the inward groove is formed in the middle of the upper portion of the base. The prefabricated water retaining ridge is simple in structure, good in overall stability, easy to install, convenient to construct and good in adaptability to site construction conditions.

This invention discloses a landscape platform-type seawall revetment structure and its construction method. The seawall revetment structure includes a slope-supporting structure, pile foundations, and a permeable floating platform. The permeable floating platform is located on the front side of the slope-supporting structure and abuts against it. By utilizing the slope-supporting structure as the seawall revetment structure and combining the floating platform and the seawall revetment, the revetment functions as both a water-based landscape platform and a seawall revetment while ensuring structural safety, thus improving the single-function nature of the seawall revetment. The construction method of the seawall revetment structure involves steps such as preliminary calculations, pile foundation construction, permeable floating platform construction, and backfilling. The slope-supporting structure and the permeable floating platform structure jointly bear the horizontal force of the seawall behind, effectively reducing land acquisition. This invention, through the landscape platform-type seawall revetment structure and its construction method, expands the water space while ensuring structural safety and reliability.

The invention discloses a TBM (Tunnel Boring Machine) stuck machine escape method. The method comprises the following steps: (1) supporting a tunneled section in a reinforced manner; (2) confirming a pipe shed workshop and a shield periphery excavation construction range; (3) a pipe shed workshop is excavated at the tail of the shield and supported; (4) a pipe shed drilling machine is assembled, an advanced pipe shed is constructed, and grouting is conducted; (5) long anchor rods are constructed between the advanced pipe sheds, chemical grout is injected, and surrounding rock on the periphery of the pipe sheds of the shield top section is cemented; (6) the pipe shed drilling machine is dismantled, and a down-the-hole excavating device is assembled; (7) the rock mass around the shield is excavated through a down-the-hole excavating device; 8) completing the excavation, assisting the TBM to escape by trying to rotate the cutterhead, stretch and retract the shield and retreat the TBM, and recovering the excavation; according to the method, manual excavation operation above the shield is not needed, only the shield tail pipe shed workshop needs to be excavated, the excavation height is greatly reduced, a down-the-hole excavation device is adopted for excavation around the shield, the radial excavation range is greatly reduced, the machine blocking treatment efficiency is high, and the construction period is shortened.

The utility model belongs to the field of building construction technology, provide a kind of reinforcing existing structure connecting joint of new steel pipe concrete column, the connecting joint is installed at the place of adjacent connecting concrete structure;Connecting joint includes steel pipe column, ring beam steel plate hoop subassembly, fixed part and reinforcing subassembly.The structure of the connecting joint of the application, for the reinforcement at the place of adjacent connecting concrete structure, compared with traditional concrete column, the effect of exempting from formwork and exempting from tying steel bar is realized, carrying capacity is higher, construction is more convenient and fast, simultaneously ring beam steel plate hoop subassembly can realize the connection of original concrete beam and new steel pipe column, the structure concept of " strong node " is realized, node connection is reliable, and construction is convenient.

The present invention discloses a new method for reconstructing a flood discharge system in a used tailings pond. The reconstructed flood discharge system is composed of a steel blade angle caisson (1), a stilling well (4), a pile foundation (6), an annular cap (7), and a new flood discharge well (8); the stilling well (4) is dug down in layers in the steel blade angle caisson (1), and a reinforced concrete wall is cast to form a net circular section; the pile foundation (6) is arranged in a circular ring shape on the periphery of the steel blade angle caisson (1); the annular cap (7) is cast and supported on the pile foundation (6); and the new flood discharge well (8) is constructed and supported on the annular cap (7). The present invention utilizes the caisson to transform the original drainage culvert, which can effectively shorten the construction period and reduce the construction cost. It can not only meet the normal tailing discharge requirements of the tailings pond, but also ensure the need for flood discharge in the heavy rainfall season, and has good economic benefits.

Provided is an adjustable steel arch rib construction operation method and platform, comprising the following steps: installing a mounting base on a steel arch rib segment - adjusting and fixing the leg position - hoisting and connecting the steel arch rib segment - adjusting the pedal - construction workers standing on the pedal for construction. The inclination adjustment unit of the present invention adjusts the fulcrum height to adaptively adjust the inclination of the fulcrum of the operating platform as the inclination of the arch rib of the secondary parabola of the arch axis changes; the pedal in the pedal adjustment unit can be manually moved up and down along a vertical slide to adjust the height of the pedal; the operating platform is assembled by bolt connection, which is convenient for installation and disassembly, can greatly improve production efficiency, and reduce the occupation of hoisting equipment during the hanging process of the operating platform; the present invention has a simple structure, is easy to make, uses less materials, and is economical, safe, practical, and efficient.

This utility model discloses a combined bidirectional mixing device and a mixing pile with an enlarged head. The upper end of the first upper outer drill rod is connected to the first power head, and the lower end of the first upper outer drill rod is fixed to the upper end of the first mixing frame of the mixing head of the upper enlarged head. The upper end of the first lower outer drill rod is fixed to the lower end of the first mixing frame of the mixing head of the upper enlarged head, and the lower end of the first lower outer drill rod is fixed to the upper end of the second mixing frame of the mixing head of the lower enlarged head. The first inner drill rod is rotatably fitted inside the first upper outer drill rod and the first lower outer drill rod. The upper end of the first inner drill rod is connected to the first power head, and the lower end of the first inner drill rod is rotatably fitted to the first lower connecting sleeve of the second mixing frame of the lower enlarged head. The lower end of the second outer drill rod is fixed to the upper end of the mixing head of the mixing pile, and the lower end of the second inner drill rod is rotatably fitted to the second lower connecting sleeve of the third mixing frame of the mixing pile. This device has a simple structure, stable and reliable construction process, and accurate and regular pile diameter.

The utility model relates to an operation auxiliary device for a bridge floor asphalt construction vehicle, belongs to the field of asphalt spreading, and aims to enable discharging to be more uniform. Comprising an asphalt material box and a material guide groove, the material guide groove comprises a front baffle, a left end plate and a right end plate, and a through groove penetrating up and down is defined by the front baffle, the left end plate and the right end plate; the other side, connected with the front baffle, of the left end plate and the other side, connected with the front baffle, of the right end plate are each provided with a connecting plate matched with the tail of a compartment of the asphalt construction vehicle. The asphalt material box is of a hollow box body structure; the material guiding groove is formed in the top of the asphalt material box, the bottom end of the through groove communicates with an inner cavity of the asphalt material box, and a discharging opening communicating with the inner cavity of the asphalt material box is formed in the bottom of the asphalt material box; and an asphalt paving channel is formed by the through groove of the material guide groove, the inner cavity of the asphalt material box and the material outlet. And the constant discharge port is matched with the asphalt material box, so that the asphalt material flows out of the discharge port more uniformly, the amount of the asphalt discharged from the discharge port is relatively easier to control, and uniform paving is facilitated.

The invention discloses a submarine pipeline expansion bend flange gasket taking-out device which comprises a first transmission mechanism and a second transmission mechanism, the second transmission mechanism is connected to the first transmission mechanism, and a holding handle is arranged at one end of the first transmission mechanism. A first clamping block is arranged at the end, away from the holding handle, of the first transmission mechanism, a rotating hand wheel is connected to one end of the second transmission mechanism, a second clamping block and a third clamping block are arranged at the end, away from the rotating hand wheel, of the second rotating mechanism, and the rotating hand wheel is rotated to tighten a locking handle arranged on the second transmission mechanism. And the clamping handle is shaken so that the gasket connected with the flange can be clamped among the first clamping block, the second clamping block and the third clamping block, and the clamping handle is shaken so that the gasket can be separated from the flange. According to the submarine pipeline expansion bend flange gasket taking-out device, the gasket can be taken out easily and rapidly in the state that the operation space is narrow, the gasket cannot be damaged, and construction is safe and reliable.

The invention belongs to the technical field of concrete pouring. The underwater concrete pouring device with the exhaust function comprises a guide pipe and a hopper arranged at the top of the guide pipe, an exhaust pipeline is arranged in the guide pipe in the length direction of the guide pipe, a plurality of exhaust holes are evenly formed in the exhaust pipeline in the length direction of the exhaust pipeline, and a drawing mechanism is arranged in the exhaust pipeline; the drawing mechanism comprises a drawing rope arranged in the length direction of the exhaust pipeline and a balance weight plumb bob arranged at the bottom of the drawing rope. The exhaust pipeline arranged in the guide pipe is matched with the drawing mechanism arranged in the exhaust pipeline, so that high-pressure gas in the guide pipe is exhausted, the problem of underwater concrete pouring failure caused by a high-pressure air bag in the guide pipe is solved, and the construction of an underwater concrete guide pipe pouring method is safer and more reliable and has quality guarantee.

This invention relates to the field of intelligent bridge construction technology, and discloses a bridge construction main beam and arch rib alignment control device, including a main beam, arch rib, cable, and controller housing. The arch rib is installed on both sides of the main beam, and the controller housing is installed on the main beam. The cable is installed on the controller housing and fixedly connected to the arch rib. An angle control unit and a tension control unit are installed inside the controller housing. This invention uses a control motor to drive a lead screw shaft to rotate. The rotation of the lead screw shaft causes a change in the position of a sliding sleeve, which in turn causes a guide sleeve to move synchronously. The guide sleeve contains a cable, which in turn moves the bottom of the cable. The connection point between the cable and the arch rib remains constant, causing the cable angle to shift, thus changing the shape. This mechanical operation simplifies the process and allows for direct remote control, making it suitable for widespread application.

This utility model discloses a seepage-proof reinforcement structure for tailings dam drainage culverts, including a drainage culvert body. Inside the drainage culvert body are individually assembleable thin-walled steel pipe sections, with grouting ports pre-installed between the thin-walled steel pipe sections and the drainage culvert body. The upper half of the thin-walled steel pipe sections has a reinforced mesh formed by longitudinally and transversely welded No. 8 threaded steel bars. The bottom of the thin-walled steel pipe sections has circumferentially arranged retractable rollers. A socket-type rubber connector is wrapped around the ends of the thin-walled steel pipe sections. The socket-type rubber connector has a pre-fabricated pressure-bearing elastic self-locking buckle at the end of the thin-walled steel pipe section, along with a matching pressure-bearing elastic self-locking buckle latch. This utility model provides initial reinforcement of the original drainage culvert by setting multiple assembleable thin-walled steel pipe sections inside the drainage culvert, followed by reinforcement and seepage control through grouting. This significantly reduces internal construction work and improves construction safety.