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290results about How to "Improve slip resistance" patented technology

Three-dimensional reinforced rigid-soft composite ecological retaining wall and construction method

The invention relates to a three-dimensional reinforced rigid-soft composite ecological retaining wall and a construction method. The retaining wall is characterized by comprising an upper portion soft ecological retaining wall body and a lower rigid retaining wall body, wherein the upper portion soft ecological retaining wall body and the lower rigid retaining wall body are connected through anchor bars. All layers of filling materials of the upper portion soft ecological retaining wall body are connected through connecting buckle parts, and water draining pipes, the connecting and fixing ends of horizontal ribbing bodies and inclined tie bars are evenly arranged on the lower rigid retaining wall body. A wall heel of a foundation of the retaining wall extends backwards to the edge of a stable soil body, vertical reinforcing piles are arranged at the bottom of the retaining wall, the horizontal ribbing bodies are laid in the filling materials behind the retaining wall, the wall toe of the retaining wall is filled back with a wall foot pressing soil body, and vertical ribbing bodies are vertically arranged at the connection position between the filling materials behind the retaining wall and an original soil body. The retaining wall structurally combines the advantages of a rigid retaining wall and the advantages of a soft retaining wall, achieves ecological slope protection, reduces pressure of soil behind the retaining wall, enhances structural integrity and has good technical and economical benefits.
Owner:SHENZHEN FUTIAN JIANAN CONSTR GRP

Polymethylmethacrylate waterproof paint and preparation method thereof

ActiveCN102140266AShort hardening timeEasy constructionCoatingsCross-linkCryogenic hardening
The invention relates to a polymethylmethacrylate waterproof paint and a preparation method thereof. The waterproof paint consists of components A and B, wherein the component A is a methacrylic acid resin liquid generated by reaction based on methyl methacrylate (MMA) utilized as a main composition, and the component B is an initiator. When the component A is prepared, a hard monomer, a soft monomer and a cross-linking monomer are put in a reaction kettle and evenly stirred, and then heating is carried out; polymethylmethacrylate moulding plastic is put, and then reaction is carried out for 1-6 hours at the temperature of 70-90 DEG C; cooling is carried out until the temperature is 50-65 DEG C, a polymerization inhibitor, an accelerator, sealing wax and a thixotropic agent are added and evenly stirred; and cooling is carried out until the temperature is 30-45 DEG C, and filtration and packaging are carried out so as to prepare the component A resin liquid. The components A and B are evenly stirred and mixed in a proper proportion, then coated, and finally solidified into a film. The waterproof paint has the characteristics of good strength, good elasticity, low temperature hardness, excellent weather resistance and the like, is simple and convenient for construction, can be solidified rapidly, and can be used for waterproof work of rapid transit railway bridge surfaces and super highway subgrades.
Owner:GUANGZHOU SUPER CHEM COATING CO LTDGUANGZHOU SUPER CHEM COATING CO LTD

Analysis and computation method for structural strength of elevating drilling platform

The invention discloses an analysis and computation method for the structural strength of an elevating drilling platform, comprising the following steps: building a finite element model according to the structure point of a drilling platform; determining an environment condition according to the operational sea area of the drilling platform; determining a variable load; combining different environmental working conditions with the variable load to obtain different computation working conditions; analyzing and calculating each computation work condition; after each computation working condition is calculated, checking the computation result from seven aspects according to relevant standards; drawing the environmental map of the drilling platform by taking the environment condition and the maximum lifting capacity as parameters; and inquiring the map to obtain the true state of the drilling platform under the practical use condition. The method has the outstanding characteristics of more computation working conditions, more manpower and time are consumed if people manually operate to finish the computation, but the dedicated program software which is compiled by the method and is dedicated for the environmental map can finish all computations within short time. Meanwhile, the software supports parallel computation so as to further shorten computation time.
Owner:DALIAN UNIV OF TECH

Design method of T-shaped intersection of arterial highway in mountain area for traffic safety

The invention relates to a design method for a T-shaped intersection of an arterial highway in a mountain area for traffic safety. Roadside protections are graded according to the collision energy of vehicles steering at the roadside of the intersection, and corresponding novel concrete guard bar structures are arranged; guard bars comprise herringbone collision posts and independent concrete short bases, the requirements of different protection levels of the roadside at the intersection are met by regulating the spaces, sizes and the depth embedded into a roadbed of the herringbone collision posts, and the purpose of protecting the vehicles steering at the intersection is achieved; the included angle between the herringbone collision posts and the edge line of a lane is 5-15 degrees, so that the protection area for steering vehicles is increased; PVC (poly vinyl chloride) pipes are sheathed on the outer layers of the collision posts, red-and-white retroreflection vertical face mark lines are arranged on both the collision posts and the concrete short bases, so that the visibility of the intersection is improved; 3-4 groups of vibration deceleration zones are arranged on the crossed road 3-6m away from the intersection; vibration side lines are additionally arranged at the roadside in the range of 30-50m in all the directions of the intersection. The design method is applicable to controlling the T-shaped intersection in the mountain area without signal control, and the primary road is a second-class highway or a first-class highway.
Owner:WUHAN UNIV OF TECH

Steel pipe concrete column-precast concrete superposed beam assembly type building connection node

The invention discloses a steel pipe concrete column-precast concrete superposed beam assembly type building connection node. The steel pipe concrete column-precast concrete superposed beam assembly type building connection node comprises a steel pipe concrete column and a precast concrete superposed beam, wherein the outer wall of the steel pipe concrete column is provided with a U-shaped steel tank and a prewelded outer ring steel plate in a welded manner, the prewelded outer ring steel plate is horizontally arranged and located above the U-shaped steel tank, the U-shaped steel tank is provided with a bottom plate and side plates, the bottom plate is provided with bottom steel bar clamping buckle devices, and the tops of the side plates are provided with upper flanges being folded outwards; and the precast concrete superposed beam is installed inside the U-shaped steel tank in an inserted manner, the bottom of the precast concrete superposed beam is connected with the bottom steel bar clamping buckle devices in a clamped manner, the top of the precast concrete superposed beam is welded to the prewelded outer ring steel plate, a mutual plug-in mounting area of the precast concretesuperposed beam and the U-shaped steel tank is a superposed area, and concrete is poured into the superposed area after lap joint and assembly of the precast concrete superposed beam. The steel pipeconcrete column-precast concrete superposed beam assembly type building connection node is convenient and fast to install without bolts and mold supporting, and the production and construction efficiency can be effectively improved.
Owner:ARCHITECTURAL DESIGN RES INST OF GUANGDONG PROVINCE

Three-dimensional continuous frame type reinforced concrete structure retaining wall

The invention belongs to the field of construction engineering, and relates to a three-dimensional continuous frame type reinforced concrete structure retaining wall. The three-dimensional continuous frame type reinforced concrete structure retaining wall comprises piles which are fixedly connected through a ground beam. Columns are fixedly connected to a base plate, the columns are in rigid connection through girders so that a frame can be formed, and a shingle is arranged on the outer vertical face of the frame. The three-dimensional continuous frame type reinforced concrete structure retaining wall is simple in structure, the frame type structure is adopted, a frame body is rooted into a stable foundation supporting layer, the lateral pressure of a side slope soil layer is dispersed through the girders and the columns, the overlarge local pressure of a wall body can be avoided, anti-sliding capacity, shear capacity and bearing capacity are enhanced, the stability and the durability of the retaining wall are guaranteed, the potential risks of engineering can be greatly reduced, and the three-dimensional continuous frame type reinforced concrete structure retaining wall is suitable for enclosing and retaining side slope soil mass in loose sandy soil, recent fill and soil piling and filling areas which can not be closely grained easily.
Owner:HAINAN HENGXIN CIVIL ENG CONSTR

Construction method of combined supporting and retaining structure

The invention discloses a construction method of a combined supporting and retaining structure, and relates to the technical field of civil construction. The method includes the steps of surveying and setting-out, mountain slope treatment, manufacturing of prefabricated reinforced concrete breast boards, foundation surface cleaning and replacement filling, construction of a cast-in-place concrete foundation, construction of a cantilever type structure, construction of pre-stressed anchor cables, masonry installation of the prefabricated reinforced concrete breast boards, and construction of a wrapped face reinforced soil structure and a covering layer. By using the vertical pre-stressed anchor cables, the workload can be reduced, the construction period can be shortened, the anti-overturning capacity and anti-slippage capacity of the combined supporting and retaining structure can be improved, and the overall stability and anti-lateral-deformation capacity of the whole combined supporting and retaining structure can be improved; by adopting the prefabricated reinforced concrete breast boards, the construction progress can be accelerated, and the project quality can be ensured; by using the wrapped face reinforced soil structure, the strength and integrity of a filling part can be improved, and the lateral soil pressure on the panel of the supporting and retaining structure can be reduced. By means of the method, the overall stability is improved, occupation of land is reduced, construction is simplified, and the construction cost is reduced; the method is especially suitable for roadbed construction in mountainous and hilly regions.
Owner:SOUTHWEST JIAOTONG UNIV +4

High-strength aluminum alloy pre-burie channel and molding process thereof

The invention discloses a high-strength aluminum alloy pre-buried channel and a molding process thereof, comprising a pre-buried channel body, wherein the pre-buried channel body is composed of a C-shaped groove and an anchor rod fixedly connected to the back surface of the C-shaped groove bottom; The anchor rod and the C-shaped groove are an integral structure of extrusion forming, the notch of the C-shaped groove is two inner flanging structures symmetrical to the middle line of the C-shaped groove, and the opposite sides of the two inner flanging edges are rack structures. As that high-strength aluminum alloy material is adopt for the pre-buried channel through the extrusion die to be extruded into the pre-buried channel body profile, the strength and load capacity of the pre-buried channel are greatly improved, the consumption of materials is less than that of the prior pre-buried channel unde the same load, and the manufacturing cost is lower than that of the prior pre-buried channel. The meshing teeth engaged with the T-shaped bolt are arranged on opposite sides of the two inner flanges of the C-shaped notch, so that the tooth area is large, the tooth profile is clear, the load level of the tooth force-bearing part is high, and the anti-sliding ability of the tooth is greatly improved.
Owner:河南厚德电力科技有限公司

High-vanadium round wire tendon rope clamp as well as manufacturing process and design method thereof

The invention discloses a high-vanadium round wire tendon rope clamp which comprises clamp bodies, connecting ear plates, an anticorrosion zinc layer, an anti-sliding metal layer and a high-strength bolt. According to the rope clamp, two rope clamp bodies which are symmetry in shape are integrally connected through the high-strength bolt so as to tightly clamp a high-vanadium round wire tendon rope body; the anti-sliding metal layer is filled at the contact part of the rope clamp bodies and the rope body; and the rope clamp bodies are subjected to hot galvanizing anticorrosion treatment. The invention also provides a manufacturing process of the rope bodies and a design method of shape and size. The rope bodies are machined by using high-strength steels, so that the problems of high manufacturing cost, quality defects and the like caused by the fact that cast steel joints are adopted are avoided. The rope clamp joint is simple in structure, convenient to manufacture and construct and economic and reasonable; the performance of the joint is verified through tests, so that the rope clamp joint is applicable to connection joints in a stretch-draw type rope rod beam pre-stress spatial structure. By adoption of the rope clamp, the force bearing performance of the high-vanadium rope body is effectively improved, the anticorrosion plated layer on the surface of the steel wire is protected, the anti-sliding ability of the rope clamp and the rope bodies is improved, so that the rope clamp is beneficial for the high-vanadium round wire tendon to be popularized and applied in China.
Owner:ZHEJIANG JINGGONG STEEL BUILDING GRP

Fill side slope gravity type retaining wall reinforcing structure and construction method thereof

The invention provides a fill side slope gravity type retaining wall reinforcing structure and a construction method thereof. The reinforcing structure comprises an original gravity type retaining wall, a fill side slope above the retaining wall, a high-pressure rotary spraying reinforcement body constructed in the retaining wall foundation, a lattice anchor cable supporting structure constructedon the retaining wall and a slope reinforcing structure constructed on the soil filling side slope. According to the reinforcing structure, the original retaining wall foundation is subjected to high-pressure rotary jet reinforcement treatment, the bearing capacity of the retaining wall foundation is directly improved, the passive protection of the original retaining wall is changed into active protection of the lattice pressure type anchor cable, the anti-overturning, anti-slip and other stability of the original retaining wall is greatly improved, and the displacement of the retaining wall can be effectively controlled; and according to the upper fill side slope, a geogrid is laid in the filling soil, and the deformation condition of the soil body is improved and the engineering performance of the soil body is improved by utilizing the interaction between the geogrid and the filling soil of each layer, so that the stability of the upper fill side slope is guaranteed, and the adverseeffect of the upper filling soil on the original retaining wall can be effectively reduced.
Owner:WUHAN SURVEYING GEOTECHN RES INST OF MCC

Steep slope embankment supporting and blocking structure and construction method thereof

The invention relates to the field of steep slope roads and discloses a steep slope embankment supporting and blocking structure and a construction method thereof. The steep slope embankment supporting and blocking structure comprises a cantilever-type soil retaining wall, a foundation pile and an anchor cable; and the cantilever-type soil retaining wall comprises a bottom plate and a vertical wall located on the bottom plate, the foundation pile is arranged on the lower part of the bottom plate, the bottom of the foundation pile is inserted into a slope body, a first anchor cable hole is formed in the vertical wall, one end of the anchor cable is connected with the vertical wall at the first anchor cable hole, and the other end of the anchor cable is inserted into a second anchor cable hole in the slope body and fixed into a stable soil layer or base rock of the slope body. According to the steep slope embankment supporting and blocking structure and the construction method thereof, apile foundation is arranged to support the cantilever-type soil retaining wall so that the problem of insufficient bearing capacity of a foundation can be solved, and the anti-overturning capabilityand the anti-sliding capability of the supporting and blocking structure are improved; and the anchor cable is arranged to connect the vertical wall with the slope body, the soil pressure of the wallback of the soil retaining wall can be partially counteracted, and the anti-overturning capability of the soil retaining wall and the overall stability of the supporting and blocking structure are further improved.
Owner:CHINA RAILWAY SIYUAN GRP SOUTHWEST SURVEY & DESIGN CO LTD +1

Three-dimensional reinforced rigid-soft composite ecological retaining wall and construction method

The invention relates to a three-dimensional reinforced rigid-soft composite ecological retaining wall and a construction method. The retaining wall is characterized by comprising an upper portion soft ecological retaining wall body and a lower rigid retaining wall body, wherein the upper portion soft ecological retaining wall body and the lower rigid retaining wall body are connected through anchor bars. All layers of filling materials of the upper portion soft ecological retaining wall body are connected through connecting buckle parts, and water draining pipes, the connecting and fixing ends of horizontal ribbing bodies and inclined tie bars are evenly arranged on the lower rigid retaining wall body. A wall heel of a foundation of the retaining wall extends backwards to the edge of a stable soil body, vertical reinforcing piles are arranged at the bottom of the retaining wall, the horizontal ribbing bodies are laid in the filling materials behind the retaining wall, the wall toe of the retaining wall is filled back with a wall foot pressing soil body, and vertical ribbing bodies are vertically arranged at the connection position between the filling materials behind the retaining wall and an original soil body. The retaining wall structurally combines the advantages of a rigid retaining wall and the advantages of a soft retaining wall, achieves ecological slope protection, reduces pressure of soil behind the retaining wall, enhances structural integrity and has good technical and economical benefits.
Owner:SHENZHEN FUTIAN JIANAN CONSTR GRP
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