18results about "Gaskets" patented technology

The invention discloses a soft clay electrochemical reinforcing device and method. The device comprises a power source, an anode, a cathode and a middle grouting pipe. A cation exchange membrane is arranged in the area, close to the cathode, of the to-be-reinforced soil body, only allows cations to migrate from the interior of the soil body to the cathode, and physically prevents anions generated by the cathode electrolytic reaction from reversely diffusing to the soil body; and the cation exchange membrane wraps the outer surface of the cathode or is arranged in the soil body around the cathode as an independent interlayer to form an ion filtering interface completely surrounding the cathode. According to the method, a selectively permeable cation exchange membrane is arranged at the interface of a cathode and a soil body, and a step-by-step grouting process of first anode grouting and then middle grouting pipe grouting is combined, so that the displacement of unit energy consumption is remarkably improved under the same voltage, the settlement amount of the soil body in a cathode area is increased by nearly 4 times, and the construction efficiency is improved. The engineering problem that an anode is hard and a cathode is soft in traditional electroosmosis is solved.

This invention relates to the field of engineering foundation construction, specifically disclosing a method for removing fine particles from dredged sandy soil foundations. The method includes a pipeline, an upper rod, a suction pipe, and a cone. The upper rod contains a high-pressure water pipe, a high-pressure air pipe, and a suction pipe, all connected to the pipeline. The suction pipe, from the outside in, consists of an outer shell, a filter screen, and a suction chamber. The outer shell has several suction holes and several high-pressure air jet holes, connected to the high-pressure air pipe, and the suction chamber is connected to the suction pipe. The cone's tip has a high-pressure water jet hole connected to the high-pressure water pipe. Several vibrating rods are fixedly installed within the upper rod and suction pipe. This invention's fine particle removal equipment penetrates deep into the soil layer and removes fine particles through suction and filtration. It has a simple structure, is easy to implement, has low construction costs, and is convenient to operate. It can effectively remove fine particles from dredged sandy soil foundations, greatly reducing the difficulty of dredged sandy soil foundation treatment construction.

This application provides a multi-level collaborative reinforcement method and structural system for the disturbed zone of collapsible loess foundation. The method includes: removing loose soil from the disturbed zone; setting up an anti-seepage wall at the edge of the disturbed zone; backfilling the disturbed zone with reinforcing material and compacting it in layers to form a foundation replacement reinforcement layer; excavating a single-foundation pit on top of the foundation replacement reinforcement layer; laying buffer material at the bottom of the single-foundation pit; laying a single-foundation steel reinforcement cage in the single-foundation pit and anchoring the single-foundation steel reinforcement cage to the reserved steel bars on the existing retaining wall; and pouring concrete into the single-foundation pit to form a single foundation. The anti-seepage wall, in conjunction with the foundation replacement reinforcement layer, forms an anti-seepage and drainage system, achieving the effect of blocking capillary water rise from the source and ensuring smooth drainage, thereby eliminating the risk of collapsible loess collapsing when exposed to water. The foundation replacement reinforcement layer adopts a replacement process of layered backfilling and alternating compaction, achieving the effect of a high-bearing-capacity, low-compressibility foundation reinforcement layer.

The invention provides a multi-level collaborative reinforcement method and structure system for a collapsible loess foundation disturbance area. The method comprises the steps that loose soil in the disturbance area is removed; an anti-seepage wall is arranged on the edge of the disturbance area; reinforcing material backfilling and layered tamping are conducted in the disturbance area, and a foundation replacement reinforcing layer is formed; single-foundation foundation pit excavation is conducted on the top of the foundation replacement strengthening layer; a buffer material is laid at the bottom of the single-foundation foundation pit; a single-foundation reinforcement cage is laid in the single-foundation foundation pit, and the single-foundation reinforcement cage and the reserved reinforcements on the existing retaining wall are mutually anchored; and the single-foundation foundation pit is poured through concrete, and a single foundation is formed. An anti-seepage drainage system is formed by matching the anti-seepage wall with the foundation replacement strengthening layer, and the effects of preventing capillary water from rising from the source and guaranteeing smooth drainage are achieved, so that the risk that collapsible loess disintegrates when encountering water is eradicated; the replacement technology of layered backfilling and alternate tamping is adopted for the foundation replacement strengthening layer, and the effect of the high-bearing-capacity and low-compressibility foundation strengthening layer is achieved.

This invention discloses a combined energy-saving treatment method for soft soil foundations, creatively integrating air lift and a circulating on-off pump into traditional vacuum preloading. Air lift periodically clears water from the core of the drainage board, ensuring the vacuum load is transmitted along the drainage board without attenuation. The circulating on-off pump causes periodic changes in vacuum level, alleviating clogging and significantly saving energy in the early stages of vacuum preloading. By rationally combining the air lift cycle and the on-off pump cycle, the consolidation pressure is increased and the energy-saving effect is maximized. This invention employs a combined air lift and circulating vacuum loading method for efficient and energy-saving consolidation treatment of soft soil, with broad application prospects and significant social benefits. As a novel energy-saving soft soil consolidation method, it is of great significance for promoting carbon neutrality.

The invention discloses a closed backfilling method for a basement side wall post-cast strip with an embedded steel plate serving as a waterproof base layer, and belongs to the technical field of underground structure waterproof construction. The structure comprises a full-length galvanized steel plate pre-buried on the outer side of the upstream face of the post-cast strip, studs are anchored to side wall steel bars, and the steel plate is in lap joint and full welding and is provided with an anti-rust and polymer emulsion waterproof coating; the waterproof coiled material is directly and continuously paved on the outer surface of the steel plate and crosses the post-cast strip; fertilizer groove backfilling is immediately implemented after waterproof acceptance check, and waiting for secondary pouring of the post-pouring belt is not needed. During construction, steel plate fixing, corrosion prevention welding, side wall concrete pouring, coiled material continuous paving and pasting and layered backfilling are conducted firstly. According to the method, a traditional brick blank film and secondary cleaning are omitted, the three functions of soil retaining, water insulation and a waterproof base layer are integrated, backfilling can be conducted in advance, the construction period is shortened, the leakage risk is reduced, and the method is suitable for the deep foundation pit basement outer wall post-cast strip position.

The present application relates to cofferdam structure technical field, especially relates to a kind of lock mouth steel pipe pile cofferdam structure and its construction method;Including pile body and I-beam, and the lower end of pile body is equipped with drill tooth;Two C-shaped tubes are provided in the inner cavity of pile body, the opening of C-shaped tube is opposite and penetrates the lateral wall of pile body, and the two wings of I-beam are inserted into adjacent two C-shaped tubes, and sealing mechanism is provided in C-shaped tube;The present application is connected by integrated C-shaped tube-I-beam rigid plug-in connection and built-in resettable sealing drive mechanism, systematically solves the series of problems in pile sinking interference, connection stiffness and component recovery of traditional process, and compatible static pressure pile planting construction, avoids vibration and soil squeezing effect;Its rigid interlocking connection provides bending stiffness much higher than prior art;Its reversible mechanical design provides fundamental guarantee for realizing nondestructive dismantling and reuse.

An inflatable active packer includes: an inner steel pile; and a sleeve coaxially disposed outside the inner steel pile. The inner diameter of the sleeve is larger than the outer diameter of the inner steel pile. The length of the sleeve is less than or equal to the length of the inner steel pile. The sleeve includes an inner wall, and one end of the inner wall is provided with a guide lug. A strengthened clamping layer is attached to the inner wall of the sleeve. A rubber capsule is fixedly disposed in the middle of the strengthened clamping layer; two ends of the strengthened clamping layer are fixedly connected to the sleeve through a compression member. A mounting hole is disposed in the middle of the strengthened clamping layer. The sleeve includes a through hole coaxially with the mounting hole.

The invention relates to the technical field of cofferdam structures, in particular to a fore shaft steel pipe pile cofferdam structure and a construction method thereof. Comprising a pile body and I-shaped steel, two C-shaped pipes are arranged in an inner cavity of the pile body, openings of the C-shaped pipes are opposite and penetrate through the side wall of the pile body, two wings of the I-shaped steel are inserted into the two adjacent C-shaped pipes, and sealing mechanisms are arranged in the C-shaped pipes; by means of integrated C-shaped pipe-I-steel rigid inserting connection and a built-in resettable sealing driving mechanism, a series of problems in the aspects of pile sinking interference, connection rigidity and component recycling of a traditional technology are systematically solved, static pressure pile planting construction is compatible, and the vibration and soil squeezing effect is avoided; the flexural rigidity far higher than that in the prior art is provided through rigid interlocking connection; and the mechanical design capable of reversely acting provides a fundamental guarantee for realizing lossless dismounting and reutilization.

The invention discloses a soft soil foundation bead-like film bag pressurized compaction reinforcing device and a reinforcing method, and relates to the field of building foundation reinforcing, the soft soil foundation bead-like film bag pressurized compaction reinforcing device comprises a plurality of film bag units which are sequentially connected through chain belts, and each film bag unit comprises at least one film bag which is sequentially communicated; one of the film bags in the plurality of film bag units is communicated with a branch pipeline, each branch pipeline is provided with a switch valve, and the plurality of branch pipelines are jointly connected with a pressurizing guide pipe. The bead-shaped film bag pressurized compaction reinforcing device is implanted into the soft soil layer depth position of the soft soil foundation to be reinforced, the field surface of the soft soil foundation to be reinforced is subjected to pressurized grouting on the film bags at the designated depth positions through pressurized grouting equipment, after grout is injected into the corresponding film bags, the film bags expand, and the soft soil foundation is reinforced. The soil body around the outer side of the film bag is extruded and reinforced.

The application provides a barrier construction for underground pollution vapor control and a preparation method thereof. The barrier construction comprises a cushion layer, an adsorption layer and a barrier layer arranged in sequence from bottom to top. The barrier construction for underground pollution vapor control and the preparation method thereof have good barrier sealing performance, high durability and stability, and can effectively prevent harmful gases such as volatile organic compounds from escaping.

This invention discloses a beaded membrane bag pressurization and compaction reinforcement device and method for soft soil foundations, relating to the field of building foundation reinforcement. It includes multiple membrane bag units connected sequentially by a chain conveyor. Each membrane bag unit includes at least one sequentially connected membrane bag, and one of the membrane bags in the multiple membrane bag units is connected to a branch pipe. Each branch pipe is equipped with a switch valve, and all branch pipes are connected to a common pressurization conduit. This invention implants the beaded membrane bag pressurization and compaction reinforcement device into the weak soil layer of the soft soil foundation to be reinforced. The surface of the site to be reinforced is then pressurized with grout to inject grout into the membrane bags at the designated depth using a pressurized grouting device. After the grout is injected into the corresponding membrane bags, the membrane bags expand, forming a compression reinforcement on the surrounding soil outside the membrane bags.

The basement outer wall waterproof construction method comprises the following steps: a, preparation before construction; b, brushing of a base treatment agent; c, laying of a coiled material waterproof layer; d, installation of a light aggregate waterproof protection wall plate; and e, completion of construction. The coiled material waterproof layer is laid and pasted by a coiled material laying device, which greatly improves the waterproof effect of the coiled material waterproof layer on the basement outer wall, reduces the manpower required during laying of the coiled material waterproof layer, and improves the laying precision of the coiled material waterproof layer. After the laying of the coiled material waterproof layer is completed, the reserved flange is folded upward, so as to increase the waterproof effect, and the light aggregate waterproof protection wall plate is fixed outside the coiled material waterproof layer, which not only increases the waterproof effect of the basement outer wall, but also protects the coiled material waterproof layer.

This application relates to the technical field of slope protection and discloses an ecological slope protection method, which includes multiple partition seats arranged on a slope. Each partition seat includes a grid plate, a mounting shell, and a stop. The grid plate is attached to the slope surface and has planting cavities extending through opposite sides of the grid plate. The mounting shell is connected to the grid plate and embedded in the slope. The stop slides within the mounting shell. The stop has a water-absorbing component for absorbing water. After absorbing water, the water-absorbing component moves the stop towards the outside of the grid plate to cover the planting cavities. The grid plate has an outlet for the stop to move out. The mounting shell contains a reset component. After the water-absorbing component loses water, the reset component moves the stop back into the stop for storage. This application can reduce vegetation loss on slope protection.

The application discloses a kind of pile foundation karst cave rapid leak stoppage method, belong to the field of pile foundation construction in geotechnical engineering.The method is aimed at the technical problems such as mud loss when pile foundation drilling hole meets fissure or karst cave in karst area, traditional method is high in cost, low in efficiency, a kind of fast and efficient leak stoppage scheme is presented.The core is that: in ground, sulphoaluminate fast hardening cement blanket is connected by magic tape at the beginning and end, and is prefabricated into sleeve structure wrapped annular hydraulic water bag;The whole pre-assembled body is lowered to the leakage passage in the pile hole;Water is filled into the water bag to make it expand radially, and the magic tape is opened, so that the cement blanket is pressed tightly on the side wall of the pile hole and covers the leakage passage;Maintain water bag support until cement blanket solidifies to form a wall.The method integrates detection, prefabrication and overall construction, realizes the accurate positioning and rapid curing of leak stoppage material, significantly improves the construction efficiency, success rate and reliability, and greatly reduces the treatment cost.

The application discloses a soft clay electrochemical reinforcement device and method, the device comprising a power supply, an anode, a cathode, and an intermediate grouting pipe; a cation exchange membrane is arranged in the area close to the cathode of the soil body to be reinforced, the cation exchange membrane only allows the migration of cations from the inside of the soil body to the direction of the cathode, and physically blocks the reverse diffusion of anions generated by the cathode electrolysis reaction to the direction of the soil body; the cation exchange membrane is wrapped on the outer surface of the cathode, or is arranged in the soil body around the cathode as an independent separation layer, forming an ion filtering interface completely surrounding the cathode. The method sets a selectively permeable cation exchange membrane at the interface between the cathode and the soil body, and combines the step grouting process of anode grouting first and then intermediate grouting pipe grouting, thereby significantly improving the unit energy consumption drainage capacity under the same voltage, and increasing the soil body settlement in the cathode area by nearly 4 times, thus solving the engineering problem of the traditional electro-osmosis "hard anode and soft cathode".

The invention discloses a multifunctional coiled material paving device for a basement exterior wall and a construction method of the multifunctional coiled material paving device. The multifunctional coiled material paving device comprises a bearing frame, a guide column is installed on the bearing frame, a sliding assembly is arranged on the guide column in a sliding mode, a driving mechanism used for driving the sliding assembly is installed on the bearing frame, and a coiled material roll is rotatably installed on the sliding assembly; the pressing mechanism comprises a plurality of overturning arms which are arranged side by side in the horizontal direction, one end of each overturning arm is installed on the outer side of the sliding assembly in an overturning mode, and a pressing plate used for pressing and abutting against the waterproof coiled material so that the waterproof coiled material can be bonded to the basement outer wall is installed at the other end of each overturning arm; an adjusting piece used for adjusting the overturning angle of the overturning arm is connected between the overturning arm and the sliding assembly. The spray head is mounted on the sliding assembly; and the flaming part is mounted on the sliding assembly and is arranged above the pressing plate. The waterproof coiled material solves the problem that the overall waterproof effect is affected due to the fact that the coiled material and a base layer are not firmly pasted in existing basement outer wall waterproof coiled material construction.

The invention relates to a reservoir bottom gas-water separation structure which structurally comprises an HDPE (high-density polyethylene) anti-seepage protective layer, a PTFE (polytetrafluoroethylene) breathable waterproof layer and a foamed aluminum pressure dispersion layer from top to bottom and is fixed by an integrated composite process to realize cooperation of pressure dispersion, gas-water separation and anti-seepage protection; the construction sequentially comprises the steps of base treatment, foamed aluminum module splicing and fixing, PTFE layer laying and reinforcing, HDPE layer hybrid welding, edge sealing and segmented inflation and water pressure detection, and aims to solve the problems that under the working condition that high-pressure gas and water at the bottom of a reservoir are soaked for a long time, a traditional exhaust anti-seepage structure is single in function, prone to blockage and failure, poor in impact resistance and anti-seepage synergy, poor in anti-seepage performance and high in anti-seepage efficiency. And a matched construction method is difficult to guarantee the structural integrated synergistic effect.