65 results about "Low-rise" patented technology

The invention belongs to the technical field of building refrigeration, and discloses a dynamic partition refrigeration regulation and control system based on floor height, regulation and control areas are divided in real time according to the floor height, heat flux density and the like through a dynamic density clustering partition algorithm, and the influence of high-altitude air pressure on the sensible temperature is corrected in combination with a height compensation module; an adaptation strategy is generated based on a'height-load 'bivariate model; the high-layer area fits the air convection characteristic through a linear function, and the low-layer area reflects the soil thermal buffer effect through an exponential function, so that refrigeration parameters are accurately matched with actual requirements of all floors, and overheating or insufficient refrigeration caused by traditional unified parameter regulation and control is avoided; data are collected in real time through a space-air-ground three-in-one sensing network; when the personnel density in a region is suddenly increased or functions are switched, the system can complete temporary partition merging and regulation and control parameter adjustment in a short time, and the intelligent operation and maintenance requirements of scenes such as a campus and a hospital for real-time monitoring and rapid optimization are met.

The utility model relates to a bent sliding door type elevator additionally arranged on an old building, which comprises a steel bottom pit, a combined shaft, a traction machine room, a shaft cap, a car guide rail, a bent sliding door type car and a bent sliding door type landing door, the combined shaft is arranged in the steel bottom pit, the traction machine room is arranged at the top of the combined shaft, and the shaft cap is arranged at the bottom of the combined shaft. The number of the lift car guide rails is two, the lift car guide rails are vertically fixed to the inner walls of the two sides of the combined hoistway left and right, the bent sliding door type lift car is arranged between the two lift car guide rails, the bent sliding door type landing door is arranged on a floor on the front face of the bent sliding door type lift car, and a traction machine in the traction machine room is responsible for traction of the bent sliding door type lift car through a steel wire rope. And the hoistway cover cap is arranged at the top of the traction machine room. The device can be directly mounted at a stairway and outside a building door opening without arranging a gallery bridge, and has the advantages of small volume, small occupied area, no influence on ventilation, passage, lighting, privacy and parking spaces of low-floor residents, and no movement of an underground pipe network.

The application provides a low-layer steel pipe concrete modular building node structure and a construction method, and belongs to the technical field of fabricated modular steel structure buildings. The node comprises a prefabricated module, the prefabricated module comprises four steel pipe concrete columns and eight horizontal steel beams; the steel beams are divided into I-shaped side beams and C-shaped channel steel middle beams, and are respectively used on the non-splicing side and the splicing side of the module; the outer side surface of the web of the C-shaped channel steel middle beam is flush with the outer surface of the column, and the webs of the channel steels of adjacent modules are attached and connected through anti-pulling and non-shear bolts; the lower column upper end of the steel pipe concrete column is provided with a reduced-diameter insertion section, and the upper column lower end is provided with a cavity section, a pressure-bearing bottom plate is welded to the inner lower end of the cavity section, the insertion section is inserted into the cavity and tightly abuts against the bottom plate, and the upper column and the lower column are butted. During construction, the module prefabrication is completed in a factory, and the lower module is positioned, the upper column insertion assembly is performed, the beam splicing of adjacent modules is performed and the node post-processing is performed in sequence on the site. The application has a clear force transmission path and improves the seismic redundancy and safety of the structure.

The utility model discloses a prefabricated wall for a low-rise civil self-built house and a connecting structure of the prefabricated wall. The prefabricated wall for the low-rise civil self-built house comprises a prefabricated wall body. First connecting notches are formed in the two transverse ends of the prefabricated wall body; a plurality of transverse steel bars with the two ends extending out of the connecting notches in the two ends of the prefabricated wall body are evenly distributed in the prefabricated wall body from top to bottom. The first connecting notches are formed in the two ends of the transverse ends of the prefabricated wall bodies, the transverse steel bars with the two ends extending out of the connecting notches in the two ends of the prefabricated wall bodies are evenly distributed in the prefabricated wall bodies from top to bottom, and when the transverse ends of the two prefabricated wall bodies are in butt joint, the two first notches form the pouring groove; after the two corresponding transverse steel bars are connected through the transverse connecting steel bars, concrete is poured into the pouring groove on site to complete transverse connection of the prefabricated wall body, the using amount of on-site formworks and steel bars is reduced, meanwhile, stirrups and longitudinal steel bars do not need to be bound on site, the using amount of the steel bars is greatly reduced, and therefore the material cost is reduced.

The invention discloses an HVAC system pipeline device for a high-rise building and a using method, and the HVAC system pipeline device comprises a water inlet pipe (1) arranged on an HVAC system, a water return pipe (2) arranged on the HVAC system, a pressurization bag assembly (4) arranged on the water inlet pipe (1), a pressure reduction bag assembly (5) arranged on the water return pipe (2), and a high-pressure water pipe (3) arranged between the pressurization bag assembly (4) and the pressure reduction bag assembly (5). Through the water inlet pipe (1) and the water return pipe (2), supply intermediate medium circulation of the HVAC system is achieved when low-rise pipelines located on a high-rise building are in a parallel connection state, and through the pressurization bag assembly (4), the pressure reduction bag assembly (5) and the high-pressure water pipe (3), the high-pressure water pipe (3) is connected with the high-rise building. According to the HVAC system, supply intermediate medium circulation of the HVAC system is carried out when high-rise pipelines located on a high-rise building are in a series connection state, and a pressure increasing port assembly and a pressure reducing port assembly which act on the high-rise pipelines located on the high-rise building are arranged in the HVAC system pipelines of the high-rise building. The technical problem that partition treatment is conducted on a high partition and a low partition through plate heat exchangers is solved, and therefore the operation effect of an HVAC system pipeline of a high-rise building is improved.

The application discloses a low-rise residential building elevator, which comprises a cage, an auxiliary safety groove strip and a deceleration groove piece, a rail inner sliding strip is installed on the deceleration groove piece, a vertical groove is formed in one side of the auxiliary safety groove strip, an embedded sliding rail is embedded and installed on the inner side wall of the vertical groove, the rail inner sliding strip is slidingly installed in the embedded sliding rail, the deceleration groove piece is fixedly installed on the side of the cage, a deceleration driving groove is formed in one side of the deceleration groove piece, a micro motor is fixedly installed on the inner side groove wall of the deceleration driving groove, a driving lead screw is connected and installed on the micro motor, a pushing frame is screwed on the driving lead screw, and a deceleration back pressure column is slidingly inserted on the pushing frame. The beneficial effect is that the inclined surface pressure setting buffer deceleration cooperation clamping stop mechanism is used to make the elevator stop at the elevator exit, rescue is facilitated, the elevator stops after buffer deceleration, loss is small, a straight elastic spring and a supporting rod side pressure spring are arranged at the bottom, and double buffering improves the safety.

An assembly type low-rise building system based on modular design comprises a design module, a supply module and a construction module, and is characterized in that the design module adopts a 600mm basic modulus to set a building main body, building materials and building nodes, and the building main body, the building materials and the building nodes form a multiple relation with the 600mm basic modulus; the design module is used for generating an overall building scheme and generating a bill of materials based on a 600mm basic modulus, the supply module is used for generating a production order and providing a logistics plan based on the bill of materials, and the construction module is used for performing field assembly according to the overall building scheme; compared with the prior art, through the design of the design module, the supply module and the construction module, linkage of building design, structural design, a production process and current assembly is achieved, and an efficient, environment-friendly and low-cost low-rise building industrial construction path is achieved.

The utility model relates to the technical field of assembled house, concretely to a new -type composite wallboard for low -rise assembled steel structure house, include: wallboard, connecting piece, connecting piece includes first screw rod and tension structure, first screw rod and tension structure clasp, be used for in horizontal direction tension adjacent two wallboards, fixed part, fixed part is used for the fixation between wallboard and steel structure main part, the utility model discloses, utilize the clasp of second screw and first screw rod, can realize the fixation of adjacent two wallboards, guarantee the size same of the joint gap between wallboard, utilize the clasp of second screw and first screw rod, can drive two sealing pieces and press mutually, realize the sealing of wallboard joint gap, can avoid the movement in horizontal direction between wallboard simultaneously, through setting up the cushion block between wallboard top surface and upper clamping groove, can avoid the up and down movement of wallboard, can be convenient for post -stage dismounting simultaneously, the repeated use of wallboard is convenient.

The utility model provides a reinforced concrete structure hole material turnover system which is characterized in that a low-layer structure hole and a high-layer structure hole are arranged in a multi-layer reinforced concrete building, and the system comprises the high-layer structure hole, the low-layer structure hole, a platform main body and a lifting machine; the high-rise structure hole is located above the low-rise structure hole, the low-rise structure hole is communicated with the high-rise structure hole, and the platform body covers the low-rise structure hole and is used for bearing materials; the lifting machine is arranged on one side of the high-rise structure hole and used for lifting materials between the platform body and the high-rise structure hole. The platform main body and the lifting machine are supported by the low-floor structure hole and the high-floor structure hole reserved in the high-rise building structure, the lifting machine is used for lifting non-solid materials in the high-floor structure to the platform main body of the low floor through the original structure hole, and then the materials are transferred to the low floor through the ramp. The requirement for material transportation on a construction site is met, and rapid turnover and discharging of non-solid materials in high floors in high-rise buildings can be effectively achieved.

This invention relates to the field of tower crane dismantling methods, specifically a method for dismantling tower cranes used in the expansion of large factories. After the construction of the modified or expanded steel structure components is completed, the tower crane's counterweight boom is lowered onto a temporary support set up on the roof of the lower-level factory structure via a reserved passageway in the high-rise factory structure, avoiding obstruction from the high-rise structure. With the cooperation of the lifting mast and the temporary support, the boom is dismantled and transported online to the end of the factory building, where it is lifted to the ground by a truck crane. The counterweight boom is directly dismantled and lifted to the ground using a high-span overhead crane. The tower body is dismantled by its own lifting system in conjunction with the truck crane, achieving self-lowering dismantling. By employing these three separate dismantling methods, the problem of dismantling tower cranes after the factory roof is closed is solved for large factory expansions.

A multi-story building is provided with load bearing walls that are able to withstand vertical loads and lateral loads. The building may be a low-rise building or a mid-rise building. The load bearing walls, as well as floor-ceiling panels, corridor panels, utility walls, and other parts of the building, are pre-manufactured off-site and then installed on-site at the site of the building. The floor-ceiling panels are hung from the load bearing walls and are capable to receive and transfer lateral and vertical loads, as well as providing improved sound proofing and fire rating for the building.

The application provides a damping suspended ceiling structure suitable for low-story high buildings and a mounting method thereof, and belongs to the technical field of suspended ceiling mounting. The damping suspended ceiling structure suitable for low-story high buildings comprises a facing plate, a connecting assembly, a keel, a damper and at least two hanging pieces. The bottom end of the damping connecting piece is sequentially threaded through an extrusion piece, a spring and a supporting piece and fixedly connected to the keel. The extrusion piece, the spring and the supporting piece can respectively move up and down along the axis of the damping connecting piece. When the building is subjected to the action of an earthquake, the building shakes to drive the hanging pieces, the hanging pieces connected with the supporting piece pull the supporting piece to move downward, the spring is stretched, the supporting piece is pushed to move upward, the spring is compressed, and thus the damage to the keel is avoided, the damping of the keel is realized, the dysfunction of the suspended ceiling is solved or reduced when the low-story high building is subjected to the action of an earthquake, the loss of the function of the suspended ceiling is avoided, the stable operation of the suspended ceiling is ensured, and the earthquake resistance is enhanced.

The present invention discloses a boom-folding device for a rapid-erecting tower crane. The front middle portion of the rear folding arm of the rapid-erecting tower crane is hingedly connected to the rear middle portion of the front folding arm to form a hinge point D. The boom-folding device is disposed between the front and rear folding arms and includes a boom linkage mechanism and a boom-folding hydraulic cylinder. The bottom end of the boom-folding hydraulic cylinder is hingedly connected to the rear folding arm. The boom linkage mechanism and the telescopic end of the boom-folding hydraulic cylinder are hingedly connected to form a hinge point A. The boom linkage mechanism includes a front folding arm link and a rear folding arm link. One end of the front folding arm link is hingedly mounted within the front folding arm to form a hinge point B, while one end of the rear folding arm link is hingedly mounted within the rear folding arm to form a hinge point C. This invention improves the stability of the entire crane during autonomous movement and is particularly suitable for material transportation and building component installation in low-rise buildings or in congested locations.

The invention relates to an advantage evaluation method for a fabricated structure technical system in the field of low-rise houses, and belongs to the technical field of fabricated buildings. The technical problem to be solved is that for selection of an existing fabricated structure technical system in the low-rise house field, a scientific and quantitative mathematical evaluation method is lacked, and accurate matching of the fabricated structure technical system and different application scene requirements cannot be achieved. According to the technical scheme, a target application scene is determined, demand weight coefficients corresponding to cost, construction period and performance are set, benchmarking products are selected to obtain related basic data, fractal dimension advantage indexes and industrialization indexes of a to-be-evaluated system are calculated, comprehensive competitive power indexes are calculated in combination with the weight coefficients, and the system is evaluated. And completing selection of the dominant technology system according to an index result.

The invention discloses a hoisting device for building engineering construction, and relates to the technical field of building hoisting equipment. The device comprises a bottom plate, the middle of the upper end face of the bottom plate is fixedly connected with a lifting structure, the lower portion of an inner cavity of the lifting structure is provided with a lifting driving structure, the upper end face of the lifting structure is fixedly connected with a steering structure, the upper end face of the steering structure is fixedly connected with a connecting structure, and one side of the upper end face of the connecting structure is provided with a telescopic driving structure. A telescopic structure is slidably connected to an inner cavity of the connecting structure, a rear hoisting structure is arranged on the lower end face of the moving structure, lifting of a telescopic column is driven and adjusted through a lifting driving structure on the bottom plate in the using process, and then the device is stably kept at any adjusting height through the self-locking performance between a worm gear and a worm; and meanwhile, the height adjusting function can meet the hoisting height requirements of different construction scenes such as low-layer component hoisting and high-layer material transferring, and the adaptability of the device to different operation heights is greatly improved.

The application discloses a kind of high solid waste utilization rate outer wall self-insulation environmental protection block and preparation method thereof, especially suitable for the outer wall structure of low-rise building in severe cold area, with high compressive strength, low thermal conductivity, excellent frost resistance and safe environmental protection characteristics, including dense outer layer, transition layer and foamed core layer, the thickness of the foamed core layer 182mm, is the main body of heat preservation, closed porosity ≥80%, thermal conductivity ≤0.085W / (m·K);The transition layer is arranged outside the foamed core layer and each thickness is 3mm, for blocking thermal bridge, interface bonding strength ≥1.2MPa, thermal resistance value ≥0.15m²·K / W;The dense outer layer is arranged outside the transition layer and the thickness is 6mm, compressive strength ≥20MPa.The application realizes compressive strength ≥10MPa, thermal conductivity ≤0.085W / (m·K), solid waste utilization rate ≥80% by polymer recycled fiber reinforcement, layered composite design and CO2 carbonization process, block is adapted to severe cold to moderate climate zone, comprehensive cost is reduced by 40% compared with traditional external insulation system, with environmental protection, safety and economic benefits.

A building includes a podium level steel transfer structure configured to receive vertical loads and lateral loads from upper portions of the building. The building may be a low-rise building or a mid-rise building. The podium level steel transfer structure may be at least partially pre-constructed such that final assembly may occur at a job site with reduced skilled labor. Transverse members of the podium level steel transfer structure may include engagement features extending vertically therefrom, and configured to align, engage, and retain at least one interior demising wall and at least one exterior wall in an orthogonal relationship through multiple fasteners. The engagement features may include a steel member with a trapezoidal profile having one or more angular notches, one or more captive fasteners, and at least one alignment hole.

The invention relates to the technical field of environment-friendly equipment, and discloses segmented balance-weight environment-friendly vertical descending carrying equipment which mainly comprises a carrying vertical shaft, a self-circulation conveying mechanism, a measurement braking device and a control system, and the carrying vertical shaft can be installed on the outer side of a building wall or at the designed position of a newly-built building; each floor is correspondingly provided with a feeding port communicated to the corresponding carrying vertical shaft, and a discharging port is formed in the lower tail end of each carrying vertical shaft. The self-circulation conveying mechanism is provided with a plurality of sections which are installed in the carrying vertical shaft, each section of independent self-circulation conveying mechanism conveys and receives materials from top to bottom to a discharging port for discharging, and each section of self-circulation conveying mechanism is provided with a measuring braking device. According to the invention, the problems of difficulty in timely cleaning of household garbage, difficulty in garbage classification tracking management and difficulty in sterilization control of garbage spread germs can be solved, the garbage clearance and management efficiency of ultrahigh buildings and low-rise buildings is effectively improved, the energy consumption is reduced, the equipment specification can be adjusted as required, multiple intelligent safety protection is realized, and the stable operation effect of carrying is ensured.

The utility model relates to the technical field of building accessories, in particular to an anti-floating bottom plate for a basement of a low-rise residence. The utility model provides a pile arrangement design method for an anti-floating bottom plate of a basement of a low-rise residence, and solves the technical problem of high construction cost of the bottom plate of the basement in the prior art. An anti-floating bottom plate of a basement of a low-rise residence comprises an anti-floating bottom plate body and anti-floating piles arranged on the anti-floating bottom plate body. The anti-floating pile is a prefabricated square pile; by optimizing the arrangement mode of the anti-floating piles, the number of the anti-floating piles is reasonably reduced on the premise that the anti-floating requirement of a main building is met, and therefore the purposes of improving the project progress, reducing the construction cost of a basement bottom plate and saving the project cost are achieved.

A core-tube thermal break composite wall system and construction method for low-energy buildings includes a concrete fireproof shear protection layer, precast insulation panels, and a floor slab core tube system. The core tube system comprises a concrete main structural layer, a portal frame system and a curtain wall system installed within the concrete fireproof shear protection layer, precast insulation panels, and the concrete main structural layer. This invention utilizes a combination of portal frame structure, curtain wall structure, and concrete shear wall structure to form a core-tube seismic-resistant external wall thermal break insulation system, improving the overall building's seismic resistance and other safety performance. Because it employs a concrete fireproof shear protection layer with shear wall function, it eliminates the need for floor slab overhangs and achieves complete insulation and thermal break treatment at the outer ends of the floor slab, thus improving building energy efficiency. It is applicable to low-rise, multi-story, and high-rise low-energy buildings.

The invention belongs to a cleaning machine, and particularly relates to a cleaning machine for building outer walls or glass curtain walls, which comprises a main machine, a main controller, guide rails, a hanging rope, a rope winding machine, a water supply pipe and a power supply. The rope winding machine is fixed on the top of a wall surface, the hanging rope is hung to suspend the main machine, and the main machine is internally provided with multiple-stage electric brush rollers, a water spraying pipe and a scraping sheet. During cleaning, the rope winding machine is operated to release the rope, the main machine moves downwards along the two guide rails fixed on the wall surface, water is sprayed by the water spraying pipe, the brush rollers rotate to wash and brush the wall surface, sewage flows to the bottom of the main machine box and is discharged through a drainage pipe. According to the needs of users, horizontal walking mechanisms, remote control devices and the like can be selected. The cleaning machine can replace the current widely-used manual high-altitude scrubbing operation, has simple structure, light weight, small energy consumption, low cost, convenient operation, can be continuously powered and water-supplied, has strong cleaning capacity, high efficiency, and is suitable for cleaning wall surfaces or glass curtain walls of various low-rise and high-rise buildings.

The application discloses a corner connecting piece for connecting a light steel keel composite wall, and aims to solve the problems of difficult construction, large cross-section loss and weak ability to adapt to different thickness walls of the existing connecting mode. The corner connecting piece is a three-dimensional frame structure welded together, the core components include a cold-bent thin-walled square steel pipe corner column, two cold-bent thin-walled C-shaped steel side columns separately arranged on the two sides of the corner column, a cold-bent thin-walled U-shaped steel guide rail connecting the top end and the bottom end of the corner column and the side column, and a plurality of cold-bent thin-walled square steel pipe diagonal supports arranged in the frame. The light steel keel composite wall is connected with the side column and the guide rail of the connecting piece through self-tapping screws. The application relies on the prefabricated standardized connecting piece, realizes the quick and reliable assembly between walls, especially at the corner, has high strength and good adaptability, and is especially suitable for modular low-rise light steel assembly buildings, and is consistent with the policy guidance of rural housing improvement and the development of assembly buildings in the field of construction.

The present invention relates to the technical field of lifting equipment, and discloses a material lifting equipment for construction engineering, including a fixed frame, an external support, a winch and a cage, wherein the two fixed frames are symmetrically installed on the building platform, and the external support is hingedly installed on the fixed frame. The steel rope 1 on the winch passes around the external support to lift the cage, and after the winch lifts the cage to the platform where the fixed frame is located through the steel rope 1, the steel rope 1 pulls the external support to rotate, so that the cage is transferred to the platform. The present invention effectively solves the operation difficulties of traditional lifting equipment in space-constrained scenarios through structural innovation and safety design, and is more suitable for material lifting operations of low-rise buildings after the main structure is completed. By winding the steel rope 1, the cage is first lifted vertically to the platform height, and then the external support is pulled to rotate, so that the cage is smoothly transferred to the platform, thereby improving construction efficiency and safety.

The utility model provides a low-rise transportation device, which relates to the technical field of building construction, and comprises a first parallel guide rail and a second parallel guide rail, the first parallel guide rail is used for height transportation, one end is fixedly arranged on the ground, the other end is hinged with the second parallel guide rail, and the second parallel guide rail is used for transverse transportation; the conveying trolley comprises a carrying support, a guide rail support is hinged to the middle of the carrying support, a guide piece in sliding connection with the first parallel guide rail and the second parallel guide rail is arranged on the guide rail support, and a guide piece is arranged on the side, away from the guide rail support, of the carrying support. The traction rope of the traction motor is connected with the transportation trolley, the transportation trolley is pulled from the first parallel guide rail to the second parallel guide rail, high transportation and transverse transportation of materials from the ground to a lower layer are achieved, the structure is simple, installation is convenient and fast, and remarkable convenience and universality are achieved.

The invention discloses a low-rise building feeding device for constructional engineering, and relates to the technical field of sand conveying equipment. The low-rise building feeding device for constructional engineering comprises a charging barrel, a discharging barrel is fixedly connected to the bottom of the charging barrel, a discharging mechanism is fixedly connected to the bottom of the discharging barrel, a material removing mechanism is movably connected to the interior of the charging barrel, and an auxiliary mechanism is fixedly connected to the outer wall of the material removing mechanism. According to the low-rise building feeding device for constructional engineering, a closed ring is driven by a telescopic rod to move downwards, and then the closed ring drives a scraping plate to rotate through a connecting rod, so that the scraping plate pushes sand to the closed ring to damage a bridging structure formed by the sand in the closed ring, and the sand is prevented from blocking a discharging opening in the bottom of a charging barrel; and a discharging plate pushes sand in a discharging barrel to the outer side through centrifugal force, the sand is discharged from a discharging opening, discharging is completed, the sand discharging speed of the device is increased, and then the construction speed is increased.

The invention discloses outer wall spraying construction equipment suitable for a low-rise building and a construction method. The equipment comprises a walking mechanism, a lifting mechanism, a spraying assembly and a material tank. The lifting mechanism is arranged on the walking mechanism, and the spraying assembly, the anemograph and the material tank are all arranged on the lifting mechanism. In the spraying assembly, a linear sliding module is connected with a lifting mechanism, the lower portion of a sliding base is embedded into a sliding groove of the linear sliding module, the upper portion of the sliding base is connected with a six-axis mechanical arm, a spraying gun is fixed to the six-axis mechanical arm through a spraying gun connecting piece, and a distance measuring instrument mounting frame is in bolt connection with the spraying gun connecting piece. The two laser range finders are symmetrically mounted on the range finder mounting frame with the spray gun as the center, the distance between the spray gun and the working face of the outer wall of the low-rise building can be accurately controlled through the symmetrical laser range finders and the windshield arranged on the spraying construction equipment, common window holes and non-working areas of the low-rise building can be automatically recognized, and spraying mistakes and spraying leakage are avoided.

Floor-ceiling panels are provided for a building that includes load bearing walls that are able to withstand vertical loads and lateral loads. The building may be a low-rise building or a mid-rise building. The floor-ceiling panels, as well as the load bearing walls, corridor panels, utility walls, and other parts of the building are pre-manufactured off-site and then installed on-site at the site of the building. The floor-ceiling panels are hung from the load bearing walls and are capable to receive and transfer lateral and vertical loads, as well as providing improved sound proofing and fire rating for the building.

The utility model discloses a composite foundation structure for a low-rise building, and belongs to the technical field of composite foundation structures, the composite foundation structure for the low-rise building comprises a raft plate, a plurality of ground pile assemblies and a plurality of anti-sliding walls, the ground pile assemblies and the anti-sliding walls are embedded in a foundation, and the anti-sliding walls are embedded in the raft plate. The two ends of the anti-sliding wall are connected with the adjacent ground pile assemblies respectively, and the raft is laid on the ground pile assemblies and the anti-sliding wall and connected with the ground pile assemblies and the anti-sliding wall at the same time. The composite foundation structure for the low-rise building comprises a raft plate, a plurality of ground pile assemblies and a plurality of anti-sliding walls, the ground pile assemblies and the anti-sliding walls are buried in a foundation, the two ends of each anti-sliding wall are connected with the adjacent ground pile assemblies respectively, and the raft plate is laid on the ground pile assemblies and connected with the ground pile assemblies.

The invention relates to the technical field of indoor natural lighting, in particular to an indoor natural lighting method integrating astigmatism safety and tracking control, which comprises the following steps of: collecting natural light by using a compound parabolic reflecting layer to generate cold and hot mixed light spots, and transmitting the cold and hot mixed light spots into a room through a gradient refractive index lens coupler and a multi-core quartz optical fiber bundle, a dynamic astigmatism safety module is arranged at the tail end of the optical fiber to regulate and control light diffusion intensity and a temperature threshold value, meanwhile, a dual-mode tracking control module is adopted to optimize light collection efficiency, and finally efficient and comfortable lighting is achieved by evaluating lighting uniformity and calculating an optical fiber layout scheme. The dazzle risk can be effectively reduced, the lighting uniformity and stability are improved, the method is suitable for low-floor-height buildings, and the technical problem of a traditional lighting mode is solved.

The invention relates to a bent sliding door type old building added elevator which comprises a steel bottom pit, a combined shaft, a traction machine room, a shaft cover cap, an elevator car guide rail, a bent sliding door type elevator car, a bent sliding door type landing door and an elevator car mechanical stopping device, the combined shaft is arranged in the steel bottom pit, and the traction machine room is arranged at the top of the combined shaft. The two car guide rails are vertically fixed on the inner walls of the two sides of the combined hoistway left and right, the bent sliding door type car is arranged between the two car guide rails, the bent sliding door type landing door is arranged on a floor on the front face of the bent sliding door type car, and the hoistway cover cap is arranged on the top of the traction machine room. The lift car mechanical stopping device comprises a plug pin hole part and a plug pin part. The system can be directly installed at a stairway opening and located outside a building door opening without arranging a gallery bridge, and has the advantages that the size is small, the occupied area is small, ventilation, passing, lighting, privacy and parking spaces of low-floor residents are not affected, and an underground pipe network cannot be moved.