87results about How to "Reduce the difficulty of installation and construction" patented technology

This invention relates to water disposal facility and means of integrated ozone and aerating biological filter. This aerating biological filter(9) is above ozone catalysis chamber(8), connects with ozone catalysis chamber(8) through the filter plate of biological filter(9); ozone catalysis chamber joints with Venturi tube(5), Venturi tube(5) respectively joints with ozone occurring system(6) and influent water pump(1); ozone occurring system(6) is a ozonizer that by silent discharge method translate oxygen of air into ozone. The water after pretreatment by ozone passes the filter plate of the aeration biological filter pool at the top of the ozone reaction chamber to enter the biological filter pool uniformly and stay for about 1 to 4 hours. This invention can advance aerating efficiency without fixing aerating system, and the flow between aerating biological filter and ozonization buffer pool cell is equilibrium, possess merits of high efficiency, low cost and so on.

The invention belongs to the technical field of liquid pistons, and particularly relates to a liquid piston device with isothermy scaling of air achievable and with temperature controlled inside. According to the liquid piston device with the isothermy scaling of the air achievable and with the temperature controlled inside, the top portions of two liquid piston chambers are respectively connected with a high pressure gas pipeline and a low pressure gas pipeline, the bottom portions of the two liquid piston chambers are both connected with an external hydraulic set through respective liquid pipelines, and a plurality of intracavity liquid storage units are arranged in the liquid piston chambers. When the liquid piston device operates, liquid stays in the intracavity liquid storage units, and the liquid storage units are used for increasing the contact area between the liquid and the air to improve heat exchange speed between the liquid and the air, and liquid temperature is used for controlling air temperature to achieve the isothermy scaling of the air. The intracavity liquid storage units are of two basic structures, have multiple enhancement type temperature control modes such as the spraying mode, the liquid circulation mode, and the air filtering mode, and can be realized through one or multiple combination types.

The invention discloses a radiation heating and cooling integrated air conditioner in quick effect and changeable load. Load can be independently borne by an indoor machine or can be commonly borne by the indoor machine and a capillary tube, and the indoor temperature is regulated by mainly using the heat transmission modes of radiation and natural convection. A surface air cooler with larger surface area is provided when the load is independently borne by the indoor machine; and in the mode of commonly bearing the load, the indoor machine and the capillary tube are positioned in different return water supply loops, the water supply temperature of the indoor machine is different from that of the capillary tube, the temperature of water supplied to the indoor machine needs to be lower than that of water supplied to the capillary tube during the refrigerating in summer, and the temperature of water supplied to the indoor machine needs to be higher than that of water supplied to the capillary tube during the heating in winter. According to the radiation heating and cooling integrated air conditioner in quick effect and changeable load disclosed by the invention, the characteristics of quiet system, high heat comfort degree, energy saving, invisibility, attractive performance and the like of a traditional radiation air conditioner are reserved, the effect is rapid, the load can be adjusted, the indoor environment in higher standard can be built, and the radiation heating and cooling integrated air conditioner has larger developing space in high-grade buildings.

The invention discloses a wind power generator comprising a tower, a first wind wheel, a cabin, a first wheel hub, a first main shaft, a first generator set and a yaw driving system, wherein the first wind wheel comprises a plurality of vanes, the cabin is installed on the tower, the first wheel hub is used for installing the first wind wheel, the first main shaft extends out of one end of the cabin, the first generator set is arranged in the cabin, and the yaw driving system is arranged at the lower end of the cabin; and one end of the first main shaft is connected with the first wheel hub, and the other end of the first main shaft is connected with the first generator set through a first drive system. The wind power generator also comprises a first wind wheel, a second wheel hub, a second main shaft and a second generator set, wherein the first wind wheel comprises a plurality of vanes, the second wheel hub is used for installing the second wind wheel, the second main shaft extends out of the other end of the cabin, and the second generator set is arranged in the cabin; and one end of the second main shaft is connected with the second wheel hub, and the other end of the second main shaft is connected with the second generator set through a second drive system. The wind power generator has low cost and can effectively improve the utilization rate of wind energy.

The invention relates to an annular combination type super-large diameter offshore wind power single pile foundation and a construction technology thereof. The annular combination type super-large diameter offshore wind power single pile foundation is characterized by comprising a first single pile and a second single pile which are arranged in a mutually sleeved mode, the first single pile and the second single pile are both steel pipe piles, and the two single piles are welded through multiple connection steel plates which are arranged between the single piles to form an annular whole. By means of the annular combination type super-large diameter offshore wind power single pile foundation, the problem of super-large diameter pile foundation construction is effectively solved, the horizontal bearing capacity and overturning resistant capacity of the pile foundation are improved, a dynamic response of the foundation structure is reduced, the application range of the single pile foundation is widened, and it is possible that a wind power generator with the capacity of 6 MW or 8 MW or even larger can adopt the single pile. Therefore, the annular combination type super-large diameter offshore wind power single pile foundation and the construction technology thereof have an extremely high actual engineering application value.

The invention discloses an adjustable-height bracket base for a photovoltaic array bracket, which comprises a bracket upright post, an end plate, a bracket base, a fastening bolt, an adjusting bolt and a bottle plate, wherein the vertical faces of the bracket upright post and the bracket base are provided with through threaded holes or vertical waist holes; the fastening bolt passes through the through threaded holes or the vertical waist holes to connect the bracket upright post and the bracket base; the lower end of the bracket upright post is welded with the end plate with a hole; the bracket base is welded on the bottom plate directly; the bottom plate is a rectangular plate with a plurality of fixing threaded holes; and one end of the adjusting bolt is connected with the end plate, while the other end is connected with the bottom plate. In the adjustable-height bracket base, the height of the adjusting bracket upright post can be adjusted to absorb the height error generated in the pouring of a concrete buttress in civil construction. Secondary grouting in the installation of the photovoltaic array bracket is thus avoided, so the installation construction difficulty is lowered, installation cost and time are saved, and installation quality is improved.

The invention belongs to the technical field of compressed air energy storage, and particularly relates to an internal temperature control liquid piston device capable of isothermally compressing and releasing air on the basis of air storage units. The device comprises one or more liquid piston cavities formed by pressure containers, and a high-pressure air pipeline and a low-pressure air pipeline, which are connected with the liquid piston cavities through air valves, wherein the lower parts of the liquid piston cavities are connected to external hydraulic equipment through liquid valves; one or more air storage units are arranged in each liquid piston cavity; the air storage units independently run respectively, or are cascaded to run; a top valve is arranged between every two adjacent air storage units; the low-pressure air pipeline is connected with the inner tops of the liquid piston cavities; if the air storage units independently run respectively, the high-pressure air pipeline is connected with each air storage unit; if the air storage units are cascaded to run, the high-pressure air pipeline is divided into two branches, the first branch is connected with the inner bottoms of the liquid piston cavities, and the second branch is connected with the inner tops of the liquid piston cavities.

The invention discloses a lifting construction method of a plurality of steel galleries between towers. The low-area steel galley, the middle-area steel galley and the high-area steel gallery are lifted in sequence; firstly, pre-installing rod pieces are installed in the elevation positions of the low-area steel galley, the middle-area steel galley and the high-area steel gallery, lifting platforms are arranged, and hydraulic lifters are installed simultaneously; then, the low-area steel galley is assembled on the ground and lifted to the elevation position, jig frames are erected on the low-area steel galley, and the middle-area steel galley is assembled and lifted to the elevation position; and jig frames are erected on the middle-area steel galley, the high-area steel gallery is assembled and lifted to the elevation position, and construction is completed. Construction of the multiple steel galleries between the towers is uncommon; the construction efficiency can be improved obviously through engineering practice of the construction method; construction safety is guaranteed; the hoisting workload is reduced by the maximum margin; energy consumption and time are saved; the construction cost and installing construction difficulty are reduced; the national environment-friendly construction requirement is met; reference and guidance can be provided for later similar engineering construction of the multiple steel galleries between the double towers; and application and popularization prospects are achieved.

The invention provides a vibration isolation device for seismic resistance of a building, which is arranged between a building main body and a foundation buttress and comprises a uniform-thickness plate vibration isolation layer and a vibration isolation cushion. The uniform-thickness plate vibration isolation layer is arranged under the building main body, and the vibration isolation cushion is disposed between the uniform-thickness plate vibration isolation layer and the foundation buttress. The uniform-thickness plate vibration isolation layer replaces original upper buttresses, beams and plates. Objectively, a stopping position, namely a structural build-in end, of an upper structure is formed. A structure computing model is clear and reasonable, restriction to the design of a vibration isolation building is removed, and the vibration isolation device has a great significance for arrangement and adjustment of vibration isolation cushions and optimization for arrangement of structures below the vibration isolation cushions, and is particularly applicable to low-storey constructivity vibration isolation designs and high-storey shear wall structure vibration isolation designs. Besides, as limitation to the dimension of the plane of an upper buttress is eliminated due to the uniform-thickness plate vibration isolation layer, middle foundation buttresses can be connected in a friction manner, construction difficulty and manufacturing cost can be greatly reduced, and the vibration isolation cushions can be maintained, replaced and adjusted conveniently greatly.

Disclosed is an assembled machining shed for building construction. The machining shed comprises m groups of assembled T-shaped supporting body steel structures, n same specifications of trusses a and a shed cover, wherein m is not less than 2 and not more than 10 and n is not more than 5; every group of assembled T-shaped supporting body steel structure comprises a vertical supporting column, a beam and two inclined pull rods, wherein the beam is formed by two trusses and the two inclined pull rods are connected with the vertical supporting column and the beam to form a T-shaped supporting body; vertical trusses, edge sealing trusses and horizontal across trusses are connected between the m groups of assembled T-shaped supporting body steel structures through connecting parts and bolts to form an integral structural frame, wherein the vertical trusses and the edge sealing trusses are formed by the trusses a and the horizontal across trusses are connected with the vertical trusses and the edge sealing trusses; an angle steel auxiliary keel and the shed cover are arranged on the structural frame; the vertical supporting columns of the m groups of assembled T-shaped supporting body steel structures are fixed on the concrete foundation through embedded foundation bolts; 2 m or less 10 or less, 5 n or less. According to the assembled machining shed for the building construction, the structure is safe, stable and reliable, the parts are assembled through the bolts, and accordingly the component machining and the integral detachment, installation and conveying are convenient.

The invention provides an air conditioner and an air-conditioning system for a ship. The air conditioner comprises a fresh air box, a mixing box and a fresh air ventilator, wherein the fresh air box is provided with a fresh air cavity and a fresh air inlet communicating with the fresh air cavity, the mixing box is provided with a mixing cavity and a return air inlet communicating with the mixing cavity, the fresh air cavity communicates with the mixing cavity, and the fresh air ventilator is arranged in the fresh air cavity. According to the air conditioner, the fresh air volume is constant, and the effect is good.

The invention discloses a hydraulic switch machine for an urban rail. The hydraulic switch machine for the urban rail comprises an electrical part and a mechanical part; the electrical part comprisesa motor, a pump valve group, an electromagnetic reversing valve and an electrical box; and the mechanical part comprises a main locking mechanism, an auxiliary locking mechanism, a manual mechanism and a sensor group. The electrical part and the mechanical part are correspondingly placed in two independent shells; and the two shells are connected with each other through a pipeline. The hydraulic switch machine for the urban rail has the advantages that the structure is optimized, practical, simple and reliable; reversing and conversion of an oil passage are realized through the electromagneticreversing valve; an oil pump rotates in one direction; switch split representation can be realized while main and auxiliary double-locking functions are realized; by using a sensor representation mode, intelligent control is convenient to realize; an electric operation automatic recovering function after switch split of the switch machine is realized; and after frequent switch split, higher working stability can still be kept.

The invention relates to the field of air pipe prefabrication and installation construction under a BIM model. The method comprises the steps: building a model, detecting model collision, optimizing the size and elevation, splitting the model, prefabricating and processing the air pipe in a factory, installing the air pipe in place, debugging a system and the like, so the production accuracy is improved. A three-dimensional model is used for splitting the size of each component, and computer data comparison is carried out, so the accuracy in production is effectively improved, and the rework phenomenon is avoided; the cost is saved; compared with a traditional air pipe on-site machining technology, factory machining is achieved, the size of the air pipe is controlled through a computer, and generation of waste during air pipe manufacturing is effectively controlled; the construction period is shortened; the air pipe is prefabricated in production and directly installed on site, the construction period is shortened; compared with a traditional construction technology, the time cost is saved, and the construction progress target is guaranteed; the construction site space is saved; the production areas do not need to be divided in construction areas, and the construction sites are saved; and installation and construction difficulties are reduced.

The invention discloses an assembly type column-mounting auxiliary device. The device comprises a hold hoop, regulating rods and butt-joint sleeves. The hold hoop is a steel hoop ring which is made of surrounding steel plates and matched with the shape of a precast column. The regulating rods are U-shaped frames made of folded steel plates, and comprise bottom horizontal rods and rods at two sides, wherein the bottom horizontal rods are fixedly connected with a plurality of butt-joint sleeves, the rods at two sides are connected with length expansion pipes, and the end portions of the rods at two sides are connected with the hold hoop respectively. When a column is installed, the hold hoop is fixed on the precast column by fastening pieces, the bottom horizontal rods are lowered by the length expansion pipes to make steel bars correspondingly penetrate through the butt-joint sleeves, or the bottom horizontal rods are up-regulated to make the butt-joint sleeves partially arranged in assembly holes of the precast column. During column installation, the device ensures one-to-one correspondence between the steels bars and the assembly holes of the precast column, solves the problem of time-consuming and labor-consuming manual alignment, reduces the construction difficulty of column installation, accelerated construction progress and makes the column installation meet construction requirements. Meanwhile, the device is simple in structure, convenient to operation, safe and high in efficiency.

The invention discloses a sea wave active plate dam power generation system. The active plate dam is composed of multiple switch blade plates and is suspended in near-shore wave to transversally intercept sea wave thrust, the whole active plate dam can be impacted by sea wave and can rotate, the blade plates of the plate dam which are suspended on sea surface can automatically open wide or can be automatically contracted and folded, so as to reduce a reacting force of wind power on the sea surface to rotation of the whole plate dam, each rotary shaft of the active plate dam is connected with multiple energy storage steel strips to store energy by virtue of a transmission gear, and the stored energy is sequentially transmitted and concentrated to the same rotary shaft, thus the rotary shaft which drives a generator has continuity and the generator is driven to generate electricity by virtue of a speed increaser. Compared with the prior art, the sea wave active plate dam power generation system disclosed by the invention has the advantages that a large-area active plate dam is used for transversally intercepting thrust of sea wave, 'positive displacement' of the traditional water blocking dam is replaced under the coordination function of a guide plate and a buffer and energy storage mechanism, 'instant capacity' of the original position of the sea is applied, damage of a violent typhoon can be prevented, the sea wave active plate dam power generation system has a simple structure and high efficiency, and high-power clean energy is realized.

The invention discloses a steel ring beam structure of a steel plate silo. The steel ring beam structure comprises the silo fixed on a support steel column top plate, wherein an annular base plate is welded on the support steel column top plate; a bottom edge of the silo is welded with the annular base plate; an upper annular reinforcing plate and a lower annular reinforcing plate are sleeved and welded on an outer circumference of the silo at an interval; a plurality of vertical plates are welded between the upper annular reinforcing plate and the lower annular reinforcing plate along a radial direction at intervals; annular vertical plates are sleeved and welded on outer edges of the upper annular reinforcing plate and the lower annular reinforcing plate; lower edges of the annular vertical plates are extended to a lower part of the lower annular reinforcing plate; a plurality of reinforcing vertical plates are uniformly distributed and welded on a lower surface of the lower annular reinforcing plate along a radial direction; the lower end of each reinforcing vertical plate is respectively welded with the annular base plate; and a plurality of support connecting vertical plates are uniformly distributed and welded along a radial direction at intervals in an area surrounded by a side wall of a conical lower hopper in the silo, the annular base plate and the side wall of the silo. According to the steel ring beam structure of the steel plate silo, the difficulty in installation and construction of the annular lower hopper of the steel plate silo is reduced, and the structure of the steel plate silo is simpler and more practical, and is convenient to manufacture and install.

This invention relates to water disposal facility and means of integrated ozone and aerating biological filter. This aerating biological filter(9) is above ozone catalysis chamber(8), connects with ozone catalysis chamber(8) through the filter plate of biological filter(9); ozone catalysis chamber joints with Venturi tube(5), Venturi tube(5) respectively joints with ozone occurring system(6) and influent water pump(1); ozone occurring system(6) is a ozonizer that by silent discharge method translate oxygen of air into ozone. The water after pretreatment by ozone passes the filter plate of the aeration biological filter pool at the top of the ozone reaction chamber to enter the biological filter pool uniformly and stay for about 1 to 4 hours. This invention can advance aerating efficiency without fixing aerating system, and the flow between aerating biological filter and ozonization buffer pool cell is equilibrium, possess merits of high efficiency, low cost and so on.

The invention relates to a socks air duct system used in a factory and an installation method of the socks air duct system, and relates to the technical field of installation of socks air ducts. The socks air duct system used in the factory comprises a plenum chamber, a main air duct, a plurality of branched air ducts, a plurality of tail air ducts, air outlet structures and perfume units. The main air duct communicates with an external air supply system through the plenum chamber. The branched air ducts communicate with the main air duct through the perfume units. Perfumes are detachably installed in the perfume units. The tail air ducts communicate with the branched air ducts. The lower surfaces of the tail ends of the tail air ducts communicate with the air outlet structures. The socksair duct system used in the factory has the effects that the structure is stable, the layout is reasonable, the ventilation effect is good, and the air quality in the factory is effectively improved.

The invention provides an open type sinking air floatation platform overhead floor overhanging vibration damping system. The system comprises a vibration isolation platform (2) providing a support plane for upper equipment (1), a plurality of air spring vibration isolators (3) arranged below the vibration isolation platform (2), an overhead floor (4) in which a vibration isolation joint is left onthe side surface of the vibration isolation platform (2) and a gap is left on the top surface of a vibration isolation foundation of an air floatation platform and isolated from the air floatation platform and independent of each other, a supporting main steel beam (5) which is an overhanging type section steel member and used for supporting a supporting secondary steel beam (6) and the overheadfloor (4), the supporting secondary steel beam (6) which is a steel member, connected with the overhead floor (4) and used for supporting the overhead floor (4), and a concrete terrace (7) which is formed by indoor and outdoor terraces around the vibration isolation platform (2) and serves as an anchoring section for the supporting main steel beam (5), wherein one section of the supporting main steel beam (5) is anchored into the concrete terrace (7), so that a supporting structure formed by the overhead floor (4) is completely isolated from the air floatation vibration isolation platform.

This invention discloses a wireless data of wide signal transmission method by wire television network, which comprises the following steps: the 802.11 wireless net bridge generates data signals and sends the signals to the signal merger through cable; the signal merger integrates the wire television signals and wireless data signals and then sends them to the wire television network cable and transmits the signals through cable television; the merged signals uses signal separator to separate the wireless network data signals before the signals achieve the terminal device of cable television; the television receives the television signals and the computer is linked to the net.

The invention relates to the technical field of pipes and discloses a novel nanometer antibacterial thermal insulation pipe. The novel nanometer antibacterial thermal insulation pipe comprises a pipe body and a sleeve, wherein the pipe body is sleeved with the sleeve. A gap formed by at least two partition strips is formed between the pipe body and the sleeve. A thermal insulation layer formed by a thermal insulation material in a filling manner is arranged in the gap. Due to the support effect of at least two partition strips, the uniform gap is formed between the sleeve and the pipe, the thermal insulation layer is arranged in the gap, the uniform thermal insulation layer is formed on the outer portion of the pipe body, hot water and hot fruits conveyed by the pipe body can be isolated from the outer portion, the conduction heat dissipation is reduced, and the thermal insulation effect can be achieved while tap water is conveyed in a cold region; by the adoption of the uniform thermal insulation layer structure, the thermal insulation effect of all positions of the surface of the pipe body is basically the same; and meanwhile the thermal insulation layer structure integrated with the pipe body is arranged outside the pipe body, mounting is completed at a time, and the mounting construction difficulty is lowered.

The invention discloses a venue giant arch structure high-altitude inclination deflection lifting method, which comprises the following steps that (a) preparation work is done before the giant arch lifting; (b) a third unit of the giant arch is installed and lifted; (c) the third unit of the giant arch is in butt joint with a second unit and a fourth unit; (d) the angles of the three units are regulated; (e) the three units are integrally lifted to the preset designed elevation; (f) a temporary support frame is installed; (g) the three units are merged with the first unit and a fifth unit; (h) after the installation reservation, rod elements are installed, and acceptance checking and coating are carried out for completing the giant arch structure high-altitude inclination deflection lifting. The method provided by the invention has the advantages that the installation and construction difficulty can be effectively reduced, the construction is safe and convenient, the cost is reduced, and in addition, the quality, the safety and the construction period can be respectively and effectively ensured.

The invention discloses a method for transmitting a 3G wireless signal based on a cable TV network, which comprises the following steps that: a 3G signal is transmitted to a signal combiner through a cable; the signal combiner combines a cable TV signal and the 3G wireless signal into one path of signal to send the signal to a cable TV network cable, wherein the 3G signal is subjected to impedance matching before signal combination or the transmission of the combined signal to the cable TV network cable to adapt the 3G signal to cable TV network cable transmission so as to transmit the 3G signal through the cable TV network cable; and before the combined signal arrives at terminal equipment of the cable TV network, a signal separator is used for separating the 3G wireless signal and the cable TV signal and transmitting the 3G wireless signal and the cable TV signal respectively to realize the cable TV signal and the coverage of the 3G wireless signal to use functions and services provided by the 3G in a room. The method has the advantages of realizing the large-scale coverage of the 3G wireless signal, along with simple structure, reliable signal reception, and great reduction in the installation number of 3G equipment and the installation construction difficulty.

The invention provides a novel glass guide groove sealing strip, and belongs to the technical field of automobile door and window sealing devices. The problem of high difficulty in the construction of a conventional noise reduction guide groove sealing strip is solved. The glass guide groove sealing strip comprises a middle substrate, wherein a left sidewall and a right sidewall obliquely extending upwards from the two sides of the substrate; a glass mounting groove is defined by the substrate, the left sidewall and the right sidewall; left and right lips for clamping the left and right sides of glass are arranged on the left and right sidewalls in a manner of extending into the glass mounting groove respectively; a sealing lip is connected to the end, far away from the left sidewall, of the left lip, and is arranged back on to the glass mounting groove. According to the novel glass guide groove sealing strip, the glass is lifted and clamped in the glass mounting groove, then the left lip is squeezed by the glass, the sealing lip is folded and pressed against the glass through the left lip, and the glass is not in contact with the sealing lip before entering the glass mounting groove, so that wind dryness is eliminated, difficulty in mounting construction is reduced, and the problem of glass dislocation caused by the accidental clamping of the sealing lip into the glass mounting groove is avoided.

The invention discloses a sea-wave movable plate dam power generation system. A movable plate dam which consists of a plurality of switching page plates is suspended in seawater to transversely intercept a sea-wave thrust; the whole movable plate dam can be impacted to rotate by sea waves, further, plate dam page plates suspended on the sea surface automatically open or contract to fold up, so that a reaction force which influences on the rotation of the whole plate dam caused by wind forces is not generated; rotating shafts of the movable plate dam are connected with a plurality of energy-storage steel strips through a transmission gear so as to store energy; the stored energies are sequentially and continuously transmitted to the same rotating shaft which drives a generator to rotate one by one, so that the rotating shaft which drives the generator is driven to continuously rotate; and then the generator is driven to generate electricity through a speed-change mechanism. Compared with the prior art, the movable plate dam with a large area is adopted to transversely intercept the sea-wave thrust, the contradiction between the thrust transversely intercepted by the movable plate dam and the reaction force generated by the wind forces on the sea surface is overcome, the power from the eternal sea waves in the nature is efficiently conducted to drive the generator to generate electricity, and thus, the sea-wave movable plate dam power generation system has an excellent environment-protection power generation effect with simple structure, high benefit, high power and zero emission.

The invention belongs to the field of prefabricated buildings, and discloses a prefabricated laminated slab design method, an assembly and disassembly method and a prefabricated laminated slab. The design method comprises the following steps: selecting a distance S as a rib outlet distance of the prefabricated laminated slab; adopting an equal-strength substitution formula to unify the spacing of the steel bars of the prefabricated laminated slab to be S, 0.75 S or 0.5 S; when the distance between the reinforcing steel bars of the prefabricated laminated slab is S, the reinforcing steel bars entering the support are arranged according to the distance S; when the distance between the reinforcing steel bars of the prefabricated laminated slab is 0.75 S, firstly arranging the reinforcing steel bars with the reinforcing steel bars being exposed according to the distance S, and then arranging one reinforcing steel bar without reinforcing steel bars between every two reinforcing steel bars with the reinforcing steel bars being exposed every 2S; and when the distance between the reinforcing steel bars of the prefabricated laminated slab is 0.5 S, firstly arranging the reinforcing steel bars according to the distance S, and then arranging one non-reinforcing steel bar between every two reinforcing steel bars. By unifying the rib outlet distance, the hole opening distance in the mold is unified, the mold can be repeatedly used, the standardization and utilization rate of the mold are improved, the number of times of factory mold opening is reduced, the mold cost is reduced, and the mold and project manufacturing cost is saved.

The invention relates to an adsorption crystallization coupling aromatic hydrocarbon production method and a system provided with toluene shape-selective disproportionation. The method comprises the steps of adsorption, extraction liquid separation, crystallization purification, C8A isomerization, C7 removal, toluene shape-selective disproportionation, raffinate separation and the like. A discharged material of an isomerization unit is directly sent to a simulated moving bed for selective adsorption, and the simulated moving bed is sequentially divided into an adsorption area, a refining area,a desorption area and an isolation area in the relative movement direction of an adsorbent. An extract is extracted from the desorption area, extracting raffinate is extracted from the middle of theadsorption area, auxiliary extracting raffinate is extracted from the bottom of the adsorption area, and part of C9+ heavy aromatics are discharged through fractional separation of the auxiliary extracting raffinate. The system comprises an adsorption concentration unit, a crystallization purification unit, an isomerization unit and a toluene shape-selective disproportionation unit. According to the invention, the total circulation amount of a process stream is obviously reduced, the construction investment and the operation energy consumption of the whole aromatic hydrocarbon combined deviceare reduced, and PX yield is improved.

The invention discloses a cement-based decorative sheet with a durable mirror surface effect. The cement-based decorative sheet is prepared by the following steps: weighing ordinary Portland cement, coal ash microspheres, silica fume, quartz sand, a water reducer, polyvinyl alcohol fibers and water, wherein the water reducer is early strength polycarboxylate-type high performance water reducer ora polycarboxylate high performance water reducer compounded with an early strength agent; uniformly mixing, so as to obtain a mixture; pouring the mixture into a mold, vibrating by virtue of a vibrator so as to discharge bubbles, standing, heating, carrying out constant-temperature steam maintenance, cooling, removing the mold, heating, standing in a constant-temperature dry heat state, cooling, coating with octyl triethoxysilane, and standing. The cement-based decorative sheet can preserve the mirror surface effect for a long time. The cement-based decorative sheet can meet artificial stone curtain walls and floors. After several dry heat-damp heat circulations, the cement-based decorative sheet can still preserve relatively high mirror surface glossiness and can be stored for a long timein an outdoor or damp-heat environment. The cement-based decorative sheet is light and high in strength, the raw materials are saved, the production efficiency is improved, the mounting and constructing difficulties are reduced, and the mounting and constructing costs are lowered.

The invention discloses a flue construction method. A flue mounting device is adopted for construction, the flue mounting device comprises a rectangular frame type steel bearing component, a frame ofthe steel bearing component is a steel framework with a T-shaped section, and a plurality of through holes are formed in outer side wing plates of the steel framework and a plurality of transverse anchoring steel bars are fixedly connected to the outer side wing plates of the steel framework; the construction method comprises the construction steps of welding the steel framework into a rectangularframe according to the design size of a flue; machining the through holes in the outer side wing plates of the steel framework, welding the anchoring steel bars according to the binding requirement,and completing the manufacturing of the flue mounting device; mounting the flue mounting device at the designed position of the flue, and binding and connecting the anchoring steel bars of the flue mounting device with floor steel bars and shear wall steel bars around the flue; pouring concrete, specifically, pouring the flue mounting device, a floor around the flue and a shear wall into a whole through the concrete; mounting a flue on the inner side of the flue mounting device; and carrying out waterproof and inlaying operations on the outer side of the flue mounting device.

The invention discloses a foot bridge of a self-anchorage balance stress chord rope structure. The foot bridge of the self-anchorage balance stress chord rope structure comprises a bridge deck slab, eccentric structures, a horizontal tensioning chord rope, counter weight loads and longitudinal stay bars, wherein the bridge deck slab is arranged on the horizontal tensioning chord rope, the horizontal tensioning chord rope is connected with the eccentric structures on the two sides, the counter weight loads are arranged on the eccentric structures, the longitudinal stay bars are arranged between the eccentric structures and the horizontal tensioning chord rope, and rod pieces are arranged between the horizontal tensioning chord rope and the longitudinal stay bars. According to the foot bridge, the characteristics of using local materials in a mountainous area are brought into full play, by means of the existing geological and topographic conditions in the mountainous area, the external material transportation and construction installation difficulty is lowered, and the foot bridge not only is applicable to the mountainous area, but also can be used for an urban overpass, is safe in stress, convenient to construct, economical and practical, and has higher application and popularization value.