133results about How to "Mature construction technology" patented technology

The invention provides a diamond rope saw static force cutting method, relating to a diamond cutting method. In the invention, an adopted hydraulic pressure diamond rope saw is driven by an hydraulic motor to move at a high speed around the cut surface of a cutting object (4) so as to cut the cutting object (4); the grinding material of diamond rope saw (5) is diamond particles, so the diamond rope saw can be used for cutting stone, reinforced concrete or other hard materials; the power source of the cutting is the hydraulic motor, a hydraulic pump is driven by the hydraulic motor to operate smoothly; and the hydraulic motor can be distantly controlled by a high-pressure oil pipe to reduce vibration and noise in cutting process and enable the cutting object (4) is cut and separated stably. The invention has the advantages of high safety and efficiency and environment protection.

The present invention adopts construction on ground surface, and makes post-tensional pile-body prestressed anti-slide pile. Its structure is as follows: firstly-poured concrete interior has steel reinforcement cage, cage edge interior has corrugated pipe, in the corrugated pipe interior a stranded wire is placed, two ends of said stranded wire are extended from said corrugated pipe, lower end of said stranded wire is connected with anchorage device of anchored part in the pile bottom, its upper end is connected with anchorage device of pile top, and the upper portion of anchorage device of pile type has secondary poured concrete. Said invention also provides its construction method.

The invention discloses a synchronous excavation supporting system for a deep and large asymmetric pit in a soft soil area and an implementation method of the supporting system. The deep and large asymmetric pit consists of a deep area and a shallow area which are internally close to each other, the top elevation of an enclosure structure at the junction of the deep area and the shallow area is a substrate of the shallow area, the total pit is provided with a first horizontal support in a unified way, the deep area is additionally provided with a plurality of deep-area horizontal supports, a soil body platform used for balancing the horizontal transfer force of the deep-area horizontal supports is reserved at the junction of the interior of the shallow area and the deep area, and two sides of the soil body platform are sloped to the substrate of the shallow area, so that open excavation and bottom-up construction in the deep area and the shallow area can be synchronously carried out, the problem of imbalance of the internal force and the deformation of the pit caused by an asymmetric excavation mode due to function requirements is solved, and the asymmetric pit can be excavated in a safe, reliable, economic and environment-friendly mode; through the synchronous excavation of the deep area and the shallow area, the construction period can be effectively shortened, and the construction cost is reduced; moreover, the supporting system is definitely stressed, the horizontal force of each horizontal support additionally arranged in the deep area is reliably transferred, and the construction feasibility is high.

Provided is a mined metro station hole pile construction method. The method comprises the steps of whole support system construction and main body second lining construction; the whole support system construction step comprises the substeps that by utilizing air shafts at the two ends of the station as temporary working wells, four pilot tunnels are transversely dug through a positive step method; upper pilot tunnel side pile and middle column hole digging pile construction is conducted, bored piles are constructed inside an upper layer side pilot tunnel at intervals, and artificial hole digging piles are constructed inside an upper layer middle pilot tunnel at intervals; lower layer pilot tunnel bottom longitudinal beam construction is conducted; upper layer pilot tunnel steel pipe column construction is conducted; side pile crown beam construction is conducted; top longitudinal beam construction is conducted; top arch initial supporting structure construction is conducted; the main body second lining construction step comprises the substeps that soil body excavation is conducted, and station top plate second lining structure construction is conducted; when a soil body is dug to the bottom of a middle plate, middle plate and middle longitudinal beam construction is conducted; when a soil body is dug to the bottom of a base plate, the waterproof base plate is laid, and structure base plate construction is conducted; lower portion side wall construction is conducted when the base plate reaches the set intensity.

The invention provides a shield-reserved penetration composite type foundation pit support wall and a construction method of the support wall. The support wall can effectively reduce the influence of construction of rail transit underground engineering in the front period on the later-period shield-reserved excavation construction. In order to solve the technical problem, the shield-reserved penetration composite type foundation pit support wall is characterized by comprising a short underground continuous wall and a stirring pile which is externally placed relative to the short underground continuous wall and used for reinforcing the continuous wall; structural steel is inserted in the stirring pile, and the short underground continuous wall is located above a shield-reserved penetration area; the position between the short underground continuous wall and the stirring pile is filled with a high-pressure rotary spraying pile, and the depth of the high-pressure rotary spraying pile exceeds that of the lower portion of the penetration area and meanwhile exceeds a shallow pressure bearing water layer, and the stirring pile is adopted by the support wall for internal reinforcing; and the position between an internal reinforced part and the short underground continuous wall is filled by a high-pressure rotary spraying pile.

The invention relates to a method for constructing a prestress anchor rope anti-skid tunnel on a thicker layer landslide. The method comprises the following steps: carrying out on-site investigation, examination and engineering geologic investigation of the thicker layer landslide; confirming corresponding situation like the slip surface position of the thicker layer landslide and the like; calculating through the landslide thrust; carrying out the prestress anchor rope anti-skid tunnel design prior to the space position laid out by the prestress anchor rope according to the landslide thrusting force under the most unfavorable load assembling conditions; constructing from both sides of the landslide body section by section, and minimizing the section length; casting a rib post and a ground beam of reinforced concrete in place on the mountain side of the tunnel and the ground, and casting linings of the reinforced concrete in place at other positions; laying out the prestress anchor rope on the rib post and the ground beam, and making the anchor rope pass through the mountain landslide surface. An anchor is fixed in the stable and hard terrane. The top arc of the tunnel is provided with a water draining hole, and the bottom is provided with a drainage ditch. The construction method can improve the stability of the thicker layer landslide and has the advantages of economy, expeditiousness, convenience and safety.

The invention relates to a deep-embedded pile for plane vertical control point at a freeze-thaw area and an embedding method of the deep-embedded pile. A marker post consists of a steel protection tube and a cement protection tube at the upper part of the marker post, a fine-sand filled layer between the steel protection tube and the cement protection tube, a slide structure between the steel protection tube and the marker post, a cement-mortar protection layer of the marker post, a button stem and a slurry surface layer. The embedding method comprises the steps of upper pile hole excavation, cement protection tube embedding, drilling, marker post placement, cement mortar filling, slide structure arrangement, fixed base point mark measuring and the like. The tangential frozen-heave force can be reduced obviously by the slide structure of the deep-embedded pile, the cement-mortar protection layer of the marker post which is capable of removing bad holes, and the button stem of the marker post. The frozen-heave phenomenon is almost not generated in the fine-sand filled layer in the freezing process in the condition of fully water-saturation. The test proves that the thaw settlement amount can be controlled within the permissible range in both of the thaw area and the strong thaw area by using the deep-embedded pile, especially the embedding depth of the marker post can be adjusted to the gravel soil layer under the freezing depth according to the freezing depth, and the tangential frozen-heave force of the embedding depth of the marker post is nearly close to zero.

The invention relates to a shear wall structure configured with crossed slant internal prestress. The shear wall structure comprises a shear wall body, horizontal steel bars of the shear wall body and vertical steel bars of the shear wall body, wherein a shear wall tooth plate and a prestress tension end anchor tool are respectively arranged at the left upper corner and the right upper corner of the shear wall body, prestress anchoring end anchor tools are respectively arranged at the left lower corner and the right lower corner of the shear wall body, and a crossed slant prestress steel beam and a crossed slant prestress pipeline are arranged between the prestress anchoring end anchor tool and the prestress tension end anchor tool at the opposite corners. A construction method of the structure comprises steps of shear wall template erection and binding of ordinary steel beams of the wall body; crossed slant prestress pipeline arrangement and installation; prestress steel beam penetration and prestress anchor tool installation; shear wall concrete casting and maintenance; and prestress tension, pipeline grouting and end part anchor sealing. The shear wall structure greatly improves the anti-seismic performance of the shear wall.

The invention discloses a cable-stayed immersed tube tunnel structure and method, which solves the problem that a large amount of manpower, equipment and financial resources are required for the construction of the immersed tube tunnel structure in the prior art, and has the advantages of being able to effectively adapt to weak riverbeds, seabeds, etc. Geological conditions, beneficial effects of adjustability, the scheme is as follows: a cable-stayed immersed tube structure, including multi-section immersed tubes, and pile foundations perpendicular to the surface of the immersed tubes are fixed on both sides of each section of immersed tubes. The foundation and the immersed tube are connected by a plurality of stay cables, the stay cables are arranged symmetrically on both sides of the pile foundation, and the stay cables are arranged obliquely.

The invention discloses a construction method of a honeycomb-shaped convex irregular curtain wall. The construction method is used for constructing a honeycomb-shaped convex irregular curtain wall integral structure. The honeycomb-shaped convex irregular curtain wall integral structure is formed by combining P glass curtain wall assemblies. The glass curtain wall assemblies include the orthohexagonal curtain wall assemblies and the triangular honeycomb-shaped glass curtain wall assemblies. During construction, every two planar triangular glass curtain walls with different sizes are connected equilaterally, so that the honeycomb-shaped convex irregular curtain wall integral structure is formed; and the value range of P is that P is an integer which is larger than three. The construction technological process comprises the steps of preparation before construction, embedding of iron pieces, installation of connecting pieces, positioning and setting-out of a vertical beam, installation of adaptor pieces, installation of the vertical beam, positioning of the storey height and a cross beam, positioning and installation of cross beam corner braces, namely adaptor pieces for the cross beam and the vertical beam, installation of the glass curtain wall assemblies, and construction of the grating curtain wall. According to the construction method, the technique is mature; and the construction method has the advantages that the construction difficulty can be lowered, the construction speed can be increased, and the construction cost can be reduced.

The invention discloses a three axes agitating pile construction method capable of assisting in grooving of a reinforced underground diaphragm wall. The construction method is characterized by comprising the following technological steps that a, the range of a reinforced target of three axes agitating piles is determined; b, the reinforcing depth of the three axes agitating piles is determined; c, the distance between an inner reinforcing pile body and an outer reinforcing pile body of the three axes agitating piles is determined; d, guide wall construction is conducted according to a construction technique of an ordinary underground diaphragm wall; e, the slurry proportion is adjusted properly; f, main quality control points of reinforcement of the three axes agitating piles are determined; g, the stability of a pile machine is checked; h, the perpendicularity control over a pile frame of the three axes agitating piles is strengthened; i, the water cement ratio, the stirring time and the slurry quality are controlled strictly, and the slurry injection pressure and the slurry injection speed during slurry injection are controlled; and j, the drilling speed and lifting speed of a drill pipe are controlled strictly. The construction method has the advantages that the technique is mature, construction is easy and convenient, the project quality is safe and reliable, the horizontal displacement and settlement amount of important structures are quite small, the requirements for economic benefits are met, and smooth implementation of a project is guaranteed.

The invention provides a soft soil area plane height measurement control point and an embedding method of the soft soil area plane height measurement control point. The soft soil area plane height measurement control point comprises a surveying rod, wherein a core column made of cement mortar is arranged in the surveying rod, the bottom of the surveying rod is embedded to a dense sand layer or a solid bearing layer, a steel protecting tube is sheathed on a part of the surveying rod, which is exposed above the ground, an upper opening of the steel protecting tube is flush with the top end of the surveying rod, and a concrete abutment is poured to the periphery of the steel protecting tube. The embedding method comprises the following steps: embedding the surveying rod into a drilling hole, injecting the cement mortar to form the core column, installing the steel protecting tube, pouring the concrete abutment, fixing a surveying marker and repairing and building safeguards. The soft soil area plane height measurement control point and the embedding method have the advantages of reasonable structure, mature construction process, long service life and the like and are especially suitable for embedding the soft soil area plane height deep embedded measurement control point, and the stability of the basic point surveying rod can be guaranteed.

The application provides a coating composition for repairing a rubber floor cloth and its application. The coating comprises one-component polyurethane basecoat and dual-component polyurethane lacquer; the one-component polyurethane basecoat is prepared from, by weight percent, 20-40% of self-crosslinking polyurethane resin, 10-20% of hydroxy acrylic resin, 10-20% of titanium dioxide, 5-10% of functional filler, 10-15% of solvenet and 0-15% of assistant; the rest is tinting paste; the dual-component polyurethane lacquer comprises elastic polyurethane resin, hydroxyl acrylic dispersing body andisocyanate curing agent. The coating system has good integral flexibility, excellent outer surface wear resistance and anti-aging performance, good interlayer adhering force and good matching property with rubber floor cloth. The coating component can be applied to repair the rubber floor cloth and can achieve refreshed expression effect, and avoid the increased dismounting course of the overhaul, prolonged overhaul cycle, and waste by replacing the floor cloth.

The invention discloses a single pile platform-based vertical axial wind turbine-bidirectional wave energy device-tidal current energy device integration structure, and belongs to the field of ocean energy utilization. The single pile platform-based vertical axial wind turbine-bidirectional wave energy device-tidal current energy device integration structure comprises a vertical axial wind turbine, a bidirectional wave energy power generation device, a bidirectional hydraulic power generation system located in the bidirectional wave energy power generation device, a tower structure, a single pile supporting platform structure, a tidal current energy power generation device and an assorted power transmission system. The integration structure obtains wind energy by using the vertical axial wind turbine at the upper part, obtains wave energy by using the vertical and horizontal bidirectional wave energy power generation devices arranged on the water level of the tower structure, and obtains tidal current energy by using the tidal current energy power generation device arranged on the underwater single pile supporting platform structure. The bidirectional wave energy device can simultaneously make use of motions relatively vertical and horizontal to the tower structure to drive a hydraulic transmission system to generate power, thus effectively improving the utilization efficiencyof wave energy.

The invention discloses a close-to-river submerged tunnel foundation pit excavation support and water precipitation and blocking method and structure. The close-to-river submerged tunnel foundation pit excavation support and water precipitation and blocking method mainly comprises the steps that a tunnel foundation fit adopts stratified and symmetrical unprotected open cut excavation, and slope protection is carried out on a slope of the foundation pit to ensure the stability of the slope of the foundation pit; a water stop curtain is arranged around the foundation pit, and the water stop curtain is formed by the water stop piles interlocking with each other, the foundation pit is closed, the water stop piles enter an impervious layer, and the water seepage of adjacent rivers outside the foundation pit is intercepted; water precipitation wells are longitudinally arranged along both sides of the foundation pit in the water stop curtain to reduce the groundwater level in the foundation pit; penetrating ground intercepting ditches are arranged on the outer periphery of the water stop curtain of the foundation pit for closure to prevent the ground water from entering the foundation pit; and drainage side ditches are arranged on both sides of the bottom of the foundation pit, and water collecting wells are arranged at appropriate intervals to exclude the water accumulated in the bottom of the foundation pit. The close-to-river submerged tunnel foundation pit excavation support and water precipitation and blocking method and structure are simple in construction equipment, the process is mature, the engineering period is shortened, the engineering investment is reduced, the combination of the water stop curtain, the water precipitation wells and the intercepting drainage sideditches is adopted, and the foundation pit has a good water precipitation and blocking effect and high safety guarantee.

The invention discloses a trenchless large-caliber water supply pressure pipeline rehabilitation construction method. The trenchless large-caliber water supply pressure pipeline rehabilitation construction method comprises the steps that the two sides of a damaged pipeline are cut up; a working pit and a receiving pit are excavated in the head end and the tail end of the damaged pipeline correspondingly; a pipe jacking device is arranged in the working pit, lining pipes are pushed into the damaged pipeline through the pipe jacking device, glass reinforced plastic sand pipes and steel pipes arecombined to serve as the lining pipes, and sealing joints are arranged between the lining pipe sections, wherein the steel pipes are adopted as the lining pipes at the head end and the tail end of the damaged pipeline and pipe sections connected with branches, and after pushing in of the lining pipes is completed, clearances between the lining pipes and the damaged pipeline are blocked. The construction method is relatively simple, mature in process, economical and practical, and the rehabilitated pipeline has the advantages of being small liquid conveying resistance, good in corrosion resistance, long in service life and free of water quality pollution.

The invention discloses a herring-bone wall body construction method of a large-span concrete herring-bone continuous girder bridge and a structure thereof. The middle symmetric sectional pouring construction method for a herring-bone wall body and a main beam comprises following steps that step 1, a middle section main beam is poured on a bridge pier; step 2, the construction of a middle section herring-bone continuous girder bridge and the cradle avoidance section are completed on the middle section main beam through a completely-high pouring way, and a steel bundle in the middle section herring-bone wall body is strained; step 3, the middle section main beam extends towards the direction of two ends; step 4, the middle section herring-bone wall body and the cradle avoidance section are constructed on a suspension pouring section in an extending mode, and then the corresponding steel bundle is strained; and step 5, the step 3 and the step 4 are sequentially circulated until the herring-bone wall body reaches the designed length, and the entire construction flow is completed. The construction method and the construction structure of the herring-bone wall body of the large-span concrete herring-bone continuous girdler bridge are convenient to construct and specific in stress.

The invention relates to a fabricated corrugated web steel box-UHPC composite beam bridge and a construction method thereof, the fabricated corrugated web steel box-UHPC composite beam bridge is composed of corrugated web steel boxes and UHPC bridge deck slabs, each corrugated web steel box is of an open box-shaped structure composed of a flat steel bottom plate, corrugated steel webs and a flat steel top plate, and the adjacent corrugated web steel boxes are connected through cross beams between the boxes; the UHPC bridge deck slabs comprise in-box prefabricated UHPC bridge deck slabs, inter-box prefabricated UHPC bridge deck slabs and cantilever cast-in-place UHPC bridge deck slabs, and the adjacent prefabricated UHPC bridge deck slabs are connected through cast-in-place wet joint UHPC bridge deck slabs; and the multiple UHPC bridge decks are correspondingly installed on the multiple corrugated web steel boxes to form the assembly type corrugated web steel box-UHPC composite beam bridge. According to the fabricated corrugated web steel box-concrete composite beam bridge, the steel consumption configuration is optimized, the self-weight of the structure is further reduced, the prefabricated concrete bridge deck is adopted, the fabricated degree is further improved, the construction period is short, the standardization degree is high, remarkable economic and social benefits areachieved, and the fabricated corrugated web steel box-concrete composite beam bridge has important significance in promoting large-scale application of steel structure bridges.

The invention discloses a beam bar anchoring sleeve pre-embedded in a thin wall and a construction method of the beam bar anchoring sleeve pre-embedded in the thin wall. The beam bar anchoring sleeve comprises a unilateral thread sleeve body and a bilateral thread sleeve body. One side of the unilateral thread sleeve body is provided with an anchoring end plate. The sum of the length of the unilateral thread sleeve body and the thickness of the anchoring end plate is the same as the thickness of the concrete thin wall. The anchoring end plate is located on the side, opposite to the concrete thin wall, of a concrete beam. The bilateral thread sleeve body is located in the concrete thin wall. The length of the bilateral thread sleeve body is the same as the thickness of the concrete thin wall. The center position of the bilateral thread sleeve body is the same as the center position of concrete beam main bars on the two sides of the concrete thin wall. According to the beam bar anchoring sleeve, the anchoring end plate and the sleeve are welded into an anchoring whole, the defect that in a conventional construction process, when a beam bar is pre-embedded, two-end thread machining cannot be conducted due to an excessively short steel bar is overcome, the anchoring problem of a horizontal structural beam subsequently constructed in the thin wall is solved, and the beam bar anchoring sleeve can be widely applied to the process that nodes are pre-embedded in a beam bar when a shear wall is not synchronous with the concrete beam in the construction process.

The invention discloses a suspension cable bridge pier abutment type pre-stress anchorage. The suspension cable bridge pier abutment type pre-stress anchorage is composed of a steel-structure concrete bearing platform, a steel pipe pile group, a pre-stress anchor cable group, a main cable and a main cable anchoring system, and is characterized in that the steel pipe pile group is composed of a vertical pile and an inclined pile; one end of the vertical pile and one end of the inclined pile stretch into a base rock and the other ends of the vertical pile and the inclined pile are in rigid connection with the steel-structure concrete bearing platform; an inner anchor head end of the pre-stress anchor cable group is fixed on the base rock and an outer anchor head end of the pre-stress anchor cable group is fixedly connected with the steel-structure concrete bearing platform; an included angle between the direction of the pre-stress anchor cable group and the direction of the main cable is 0-5 degrees; an inclined angle of the pre-stress anchor cable group is greater than that of the main cable; and the main cable anchoring system is fixed at the top of the steel-structure concrete bearing platform. A huge pull force of the main cable is transmitted to the base rock through the pre-stress anchor cable group and a traditional stressing manner of an anchorage structure is changed; and a force bearing range of the anchorage structure is extremely improved and a brand new way is provided for construction of ultra-large suspension cable bridges.