185results about How to "Meet the requirements of green construction" patented technology

The invention discloses a self-compacting concrete for prestressed girders with ultra-long span. The self-compacting concrete comprises the following parts of components by weight: 180-210KG of water; 350-400KG of Portland cement; 30-35KG of a concrete admixture; 700-800KG of fine aggregates which are of medium coarse sand; 900-1000KG of coarse aggregates which are of crushed stone with particle size of 5-20mm; 35-40KG of an efficient concrete reinforcing agent; 0.5-1.0KG of polypropylene anti-crack fiber; and 20-25KG of an antifreezer which can be added so as to meet the needs of construction in winter. The self-compacting concrete has the advantages of self-compactness and high fluidity, and helps solve the problem that small space can not be passed through by ordinary concrete, achieving concrete compactness without vibration, ensuring construction quality of working elements, being capable of greatly lowering labor intensity of workers and improving production efficiency, as well as reducing noise pollution from construction and achieving requirements of environment-friendly construction.

The invention relates to a prefabricated non-thermal bridge external thermal insulation wallboard with a C-shaped steel light steel keel and a manufacturing method thereof. The wallboard comprises a base wall body, a break thermal bridge anchoring bolt, a connecting piece, a thermal insulation board and a stressed-skin diaphragm. The thermal insulation board and the base wall body are fixedly connected into a whole through the break thermal bridge anchoring bolt and the connecting piece, and the stressed-skin diaphragm is fixedly arranged on the other side, relative to the thermal insulation board, of the base wall body. The prefabricated non-thermal bridge external thermal insulation wallboard is convenient to construct and simple in structure, breaks the inherent concept of ''thermal insulation after wall body'' and proposes the integrated production of a thermal insulation wall body. Factory prefabrication and site assembly can be carried out, batch production and on-site installation are convenient, the construction efficiency is improved, the characteristics of low energy consumption, flexible arrangement and fast construction are achieved, and the requirements of green construction are met. The arrangement of the non-cut-through type break thermal bridge anchoring bolt and dovetail grooves avoids the phenomenon of a thermal bridge caused by joints and the like, the thermal insulation performance of the wall body is improved, and the structural integrity is increased; and the weight of the wall body is greatly reduced due to using of a light steel keel frame and lightweight concrete, and the cost of construction, transportation and seismic design of later structure is reduced.

The invention discloses a floor slab hole plugging device and method. The floor slab hole plugging device comprises a supporting plate, a pulling rod and a fixing plate. The supporting plate and the fixing plate are horizontally and parallelly arranged and distributed on the pulling rod in sequence from bottom to top. The pulling rod is sleeved with a sleeve. The length size of the sleeve is larger than the thickness size of a floor slab. The sleeve is arranged between the supporting plate and the fixing plate. The supporting plate and the pulling rod are connected and fixed through welding. The fixing plate is connected with the pulling rod through a thread and can be moved and adjusted up and down along the pulling rod through the thread. A plurality of cushion blocks are further arranged on the lower end surface of the fixing plate and are uniformly distributed along the center of the fixing plate. During working, the supporting plate covers the lower portion of a floor slab hole, is closely attached to the lower end surface of the floor slab and is used for plugging a lower end opening of the floor slab hole; the pulling rod penetrates through the floor slab hole and is connected with the fixing plate covering the upper portion of the floor slab hole; and the cushion blocks are distributed between the fixing plate and the floor slab. Operation is easy; the construction efficiency and the construction safety are improved; turnover repeated use can be achieved; the construction quality is improved; and the cost is reduced.

The invention discloses a flexible prefabricated and assembled shear wall-external window integrated construction system. The flexible prefabricated and assembled shear wall-external window integrated construction system comprises a wall frame into which concrete is poured. A window hole is reserved in the wall frame. A window frame bench formwork is tightly attached to the inner wall face of the wall frame. A bottom window frame formwork, a window frame and a top window frame formwork are sequentially installed inside the window hole from interior to exterior. One face of the bottom window frame formwork is fixedly connected with the window frame bench formwork. The two sides of the window frame are fixedly provided with window frame embedded parts stretching into the wall frame. According to the flexible prefabricated and assembled shear wall-external window integrated construction system and method, the window frame formworks can be repeatedly utilized, the construction flow is easy and convenient, the time limit for a project is shortened, the higher stability is achieved after the window frame is installed, and the better waterproof and heat preservation effects are achieved.

The invention discloses a construction method for whitewashing-free puttying processing of a concrete porous brick wall. According to the method, special putty is utilized for replacing a traditional composite mortar floated coat process and is directly puttied on the concrete porous brick wall, quality is stable, the method is free of hollowing and cracking, appearance quality is good, green construction requirements are met, and the usable area is increased at the same time. Thus, the construction method has the advantages of being advanced, practical, economical, environmentally friendly and capable of being applied and popularized widely under the current engineering background.

The invention discloses an assembled integral shear wall and a construction method thereof. The shear wall is composed of a shear wall formwork and a concrete block arranged in the shear wall formwork, and an internal gap of the shear wall formwork is filled with cement paste; the shear wall formwork is made of concrete and a cold-drawn steel bar net piece, the cold-drawn steel bar net piece is bound with stressed steel bars and hanging steel bars, and the hanging steel bars forms hanging rings above the shear wall, extend out of the lower portion of the shear wall and are used for positioningthe shear wall formwork; stirrups are bound on the outer sides of the stressed steel bars; the concrete block is provided with line-shaped stirrup reserved holes; a filling opening is formed in the bottom of the shear wall formwork shell. The shear wall can be used for super high-rise buildings, the assembled integral building is less constrained by weather conditions, extensive construction is changed into precision construction, and various requirements of green construction are met.

The invention discloses a high-performance low-prestressed concrete hollow square pile. The high-performance low-prestressed concrete hollow square pile is characterized in that a pile body is composed of at least one unit pile; each unit pile is composed of concrete and parallel reinforcing steel bars tensioned with the prestress of 0.3-0.6 [sigma] in the concrete; the two ends of the reinforcing steel bars are connected with connection plates respectively; the adjacent unit piles are welded through the connection plates to form the pile body; the outer layers of the two connected connection plates are coated with fiber resin with the thickness not smaller than 1.5 mm; the fiber resin layers are wrapped with carbon fiber cloth capable of improving the antiseptic ability and tension resistance. The high-performance low-prestressed concrete hollow square pile has the advantages of being high in corrosion resistance, large in bearing force, low in production cost, high in durability and the like, the problem of the piling illusion is effectively solved, the integrity of the pile body is ensured during construction, the bearing force of the pile body is effectively improved, the weight is lower, cracks caused by mutual collision in the production and transportation process can be avoided, and the phenomena of pile breakage, pile body concrete falling and the like are also not prone to occurring in the site construction.

The invention discloses a construction method of a high altitude large-span overhanging steel platform formwork. The construction method includes the steps of preparation of construction, construction of embedded parts, installation of primary beam, installation of a large corner single truss, installation of a bracing piece, installation of a secondary beam, laying of a steel plate, welding of an outer frame anti-skid positioning pile, building of an outer frame, installation of a cable-stayed bar, removing and the like. By adoption of the construction method, the construction problem of a structure-complex special-shaped large-span high altitude overhanging structure of hanging garden layer is solved successfully. Machining is simple, the construction is simple and convenient, the safety factor is high, the construction efficiency is high, the influence to a construction working face is extremely low, the influence to the construction period is low, the installation and removing construction are simple and convenient, materials can be repeatedly used for circulation, and the requirement for environmental-protection construction is met.

The invention discloses a light self-climbing shield frame system and a construction method thereof, and relates to the technical field of formwork systems. The light self-climbing shield frame systemand the construction method thereof are used for solving the problems of the tedious lifting process of a lifting system and an anti-falling device and low safety. The light self-climbing shield frame system includes a scaffold system, a supporting system, a lifting system and an anti-tilting and anti-falling system. The supporting system includes a bearing frame which is fixed on a structural steel beam; the lifting system includes an electric block, a bottom guiding wheel and a steel wire rope, wherein the electric block is arranged at the top of the scaffold system, the bottom guiding wheel is fixed to the bottom of the scaffold system, one end of the steel wire rope is connected with the electric block, and the other end of the steel wire rope passes through the bottom guiding wheel to be arranged at the bottom of the bearing frame in a hung mode; the anti-tilting and anti-falling system includes a guiding rail installed on a scaffold frame body, and an anti-falling pawl wheel, alimiting spring, an anti-falling pawl and a limiting baffle are arranged on the bearing frame; the anti-falling pawl wheel meshes with the guiding rail, the limiting spring is used for limiting the stroke of the anti-falling pawl, and the anti-falling pawl and the limiting baffle are used for preventing the anti-falling pawl wheel from rotating counterclockwise. Therefore, falling of the scaffoldframe body and the guiding rail is prevented, and the anti-falling effect is achieved advantageously.

The invention discloses a direct-burial complete-set constructing process for electromechanical pipelines and wire boxes of masonry engineering. The direct-burial complete-set constructing process comprises the following steps of the step 1 of laying wires for a masonry, embedding steel bars for the masonry and installing a water stopping belt module; the step 2 of installing the electromechanical pipelines, previously setting the electromechanical pipelines and the wire boxes to be in place, previously configuring tubes for installing the wire boxes and previously bending the pipelines to be in place; the step 3 of pouring the water stopping belts, prefabricating lintels and building bricks; the step 4 of building the masonry, performing, embedding and centralizing the electromechanical pipelines and wire boxes, building stripe-shaped or U-shaped bricks on the two sides of reserved spaces for the electromechanical pipelines and wire boxes in a sleeving mode, arranging single-edge lintels at the upper portions of the wire boxes if reserved holes for the wire boxes exceed 300mm and building U-shaped brick or prefabricating U-shaped bricks to enable the pipelines to be embedded into a wall if the thickness of a wall body is smaller than 100mm; the step 5 of forming the masonry and filling and leveling gaps between the electromechanical pipelines, the wire boxes and the bricks with masonry mortar. According to the direct-burial complete-set constructing process, grooving and secondary pipe distribution after masonry construction are avoided, the work efficiency is improved, and the construction time is saved.

The invention relates to a normalized support system and construction method of a weather-proof PVC (polyvinyl chloride) composite plastic template, belonging to cast-in-place reinforced concrete structure beam and template support. According to the normalized support system of the weather-proof PVC composite plastic template, a vertical rod and a cross rod constitute a three-dimensional net-shaped structure, the top of the vertical rod is provided with an adjustable support, a lengthways main keel is erected at the top of the adjustable support, weather-proof PVC composite plastic templates are arranged above the main keel and a secondary keel. The construction method of the weather-proof PVC composite plastic template comprises the steps of: 1) designing the support system; 2) detecting a position line via flip; 3) designing the normalized support system of an erected template; 4) adjusting an elevation to install the plastic template; 5) strapping the reinforcing steel bars of the beam and a plate and pouring concrete; 6) lowering the main keel and the secondary keel; 7) dismantling the secondary keel; 8) dismantling the plastic template; 9) dismantling the main keel, the cross rod and the vertical rod successively. The normalized support system and construction method of the weather-proof PVC composite plastic template can save wood, and are simple to operate, and safe and reliable.