472 results about "Parapet" patented technology

The invention relates to the technical field of building structure health monitoring, in particular to an unmanned aerial vehicle laser radar-based building point cloud deformation quantitative extraction method, which comprises the following steps of: based on building corner structure characteristics in point cloud data, carrying out quantitative evaluation on the overall inclination state of a building through point cloud segmentation, straight line fitting and angle calculation; based on an ideal plane hypothesis, performing plane fitting and point-to-plane distance analysis on the building facade point cloud in the point cloud data, identifying a local concave-convex deformation area of the building facade, and performing quantitative evaluation; and roof plane detection and wall surface normal vector analysis are carried out based on the point cloud data, and accurate quantification is carried out on parapet wall inclination based on region growth segmentation and PCA principal direction analysis. Through automatic processing and quantitative analysis of an algorithm, subjective errors and inconsistency possibly occurring in a traditional manual evaluation method are avoided, and objectivity and repeatability of an evaluation result are enhanced.

The utility model discloses a glass curtain wall top edge sealing structure which is characterized in that a glass curtain wall is arranged on a main body structure, a parapet wall is arranged on the upper portion of the main body structure, and a top edge sealing assembly connected with the glass curtain wall is arranged on the parapet wall; the top edge sealing assembly comprises a lower edge sealing component, the lower edge sealing component is installed on the top face of the parapet wall in a covering mode and connected with the glass curtain wall, a supporting steel truss penetrating through the lower edge sealing component is vertically installed on the top face of the parapet wall, and an upper edge sealing component is jointly arranged on the top of the supporting steel truss and the top of the glass curtain wall. Therefore, the glass curtain wall protruding out of the parapet wall is pulled and fixed, potential safety hazards of the part, protruding out of the parapet wall, of the glass curtain wall are reduced, edge sealing of the part, protruding out of the parapet wall, of the glass curtain wall is achieved, waterproof measures are enhanced, the waterproof effect is improved, and potential quality hazards of water seepage and leakage are reduced; the structure is simple, construction is easy, and the installation quality of the glass curtain wall is improved.

To provide a net connecting device that is suitably used without being made to abut on a roof floor (exterior floor) etc. of a building.SOLUTION: A net connecting device 1 is mounted on a parapet P of a building to stretch a net R, and comprises: a first abutting part 11 and a second abutting part 12 which abut on two back-to-back surfaces of the parapet P; an elastic coupling part 13 which couples top sides of the first abutting part 11 and the second abutting part 12 to each other; a screw part 14 which is located in the coupling part 13, and rotates to expand and contract the coupling part 13 to make the first abutting part 11 and the second abutting part 12 abut on the two back-to-back surfaces in the contraction state; and a net holding part 16 which is located outside above the first abutting part 11, and serves as a screw operation part 15 rotatably operating the screw part 14.SELECTED DRAWING: Figure 1

The invention discloses a roof waterproof and heat preservation integrated structure which comprises a roof base layer, a roof structural layer set, a parapet wall, a roof embedded sleeve, a rainwater pipe embedded assembly, a steam exhaust pipeline and a roof equipment platform which are sequentially arranged from bottom to top. The roof structure layer set comprises a first waterproof layer, a heat preservation layer, a slope making layer, a leveling layer, a second waterproof layer, an isolation layer and a waterproof protection layer which are sequentially arranged from bottom to top, an outer eave and an inner eave are arranged at the top end of the parapet wall, and the surface base layer exceeds the outer side of the parapet wall. The space between the outer eave of the parapet wall and the surface base layer is filled with a graphite polystyrene board and is used for building autoclaved aerated concrete blocks, and the second waterproof layer is upturned to an internal corner formed by the inner eave of the parapet wall and a vertical wall body of the parapet wall. The design of the outer eave and the inner eave at the top end of the parapet wall is matched with the filled graphite polystyrene boards and the built autoclaved aerated concrete blocks, so that the heat preservation and heat insulation performance of the parapet wall is effectively improved.

The invention provides a three-dimensional rainwater collection and storage system and method for recharging underground water, and belongs to the technical field of rainwater recharging. The system comprises a roof collection and storage subsystem and a rainwater purification subsystem which are connected. The roof collection and storage subsystem comprises a parapet wall, a rainwater hopper, a rainwater falling main pipe and two retaining walls, and a water storage space is formed between the retaining walls; an emptying pipe and an emptying valve are arranged on the retaining wall; the bottom end of the rain falling main pipe is connected with a flow guide pipe and a rain falling branch pipe; the rainwater cleaning assembly comprises a water collecting hopper ditch which is arranged above the retaining wall and has a flow discarding function; a landing frame and a rain collecting plate are further arranged above the roof floor slab; the rainwater collecting plate forms an upper-layer rainwater collecting space, the water storage space forms a lower-layer rainwater collecting space, and the rainwater collecting plate and the water storage space are combined to form a three-dimensional roof space. According to the system, roof rainwater source cleaning and roof rainwater regulation and storage are organically combined, and the purposes of roof rainwater peak shifting discharge, storage and utilization and underground water supplement and conservation can be better achieved.

The invention belongs to the technical field of three-dimensional point cloud processing, and discloses a live-action three-dimensional point cloud AI automatic extraction method and system, and the method comprises the steps: carrying out the scanning through a laser radar, collecting the point cloud data of an external vertical face and a roof of a building, and obtaining an original point cloud; preprocessing the original point cloud to obtain a preprocessed point cloud; based on the preprocessed point cloud, extracting a plane segment set and a vertical plane set; based on the plane section set, extracting a roof edge line, a top surface outer boundary of the parapet wall and a top surface inner boundary of the parapet wall; calculating a roof edge height based on the roof edge line; and based on the roof edge height, the top surface outer boundary and the vertical plane set, determining an outer boundary line of the parapet wall, and obtaining a parapet wall point set after analysis. According to the method, the key technical challenge on parapet wall extraction in building point cloud refined segmentation is overcome, and a solid technical guarantee is provided for high-precision three-dimensional reconstruction and digital management.

The embodiment of the utility model provides a roof assembly, and the roof assembly comprises a roof purline which extends along a first direction; the wall surface purline is arranged on the wall column of the parapet wall and is parallel to the roof purline, and the wall column of the parapet wall extends in the second direction perpendicular to the first direction; one side, in the third direction, of the gutter piece is connected with the roof purline, and the other side, in the third direction, of the gutter piece is connected with the wall purline; wherein the gutter piece is formed by bending a composite plate, the composite plate comprises a first metal plate and a first waterproof layer which are arranged in a stacked mode, and the third direction is perpendicular to the first direction and the second direction; the roof panel is connected to the top flange of the roof purline, and the roof panel is in sealed connection with the first waterproof layer. According to the technical scheme, the sealing performance between the roof panel and the gutter piece can be guaranteed, gaps between the gutter piece and the roof panel are avoided, and therefore rainwater can be prevented from flowing into a room through the gaps between the gutter piece and the roof panel.

The utility model belongs to the technical field of building construction, and particularly relates to an electric hanging basket rear support heightening construction device which comprises a base plate, a balancing weight is connected to the top surface of the base plate, a base rod is connected to the top surface of the base plate, a heightening rod is connected to the top surface of the base rod, and an ejector rod is connected to the top surface of the heightening rod. The surface of the top end of the top rod is connected with one end of a rear beam, the surface of the other end of the rear beam is connected with a middle beam, the surface of the other end of the middle beam is connected with an overhanging front beam, the surface of the bottom of the other end of the overhanging front beam is connected with the surface of the top of a parapet wall, and the surface of the top of the overhanging front beam is connected with an upper supporting column. The hanging basket is simple in structure, reasonable in design, convenient to install, made of a steel structure, reliable and stable in structure and high in safety, meanwhile, the length of the girder can be adjusted, the height of the rear support can be adjusted, and the hanging basket is suitable for hanging basket installation construction under the working condition of ultrahigh parapet walls with various heights.

The invention belongs to the technical field of building waterproofing, and discloses a roof waterproof construction method and a roof waterproof structure. The roof waterproof construction method comprises the steps that a first waterproof layer and a heat preservation layer are sequentially laid on a reinforced concrete floor; a slope making layer is laid on the heat preservation layer, the height from the center position of the heat preservation layer to the concrete blocks on the periphery is gradually reduced, and a layer of fine aggregate concrete with the thickness of 20-40 mm is laid on the concrete blocks; a second waterproof layer is laid on the slope making layer, and the edge of the second waterproof layer vertically extends upwards along the parapet wall; an isolation layer and a first protection layer are sequentially laid on the second waterproof layer, and the head closing part of the second waterproof layer is higher than the upper surface of the first protection layer. The roof waterproof structure is built through the roof waterproof construction method, roof cracking caused by frost heaving of the slope making layer at the low temperature is avoided, the waterproof effect of the roof is improved, the slope making layer is machined through broken concrete blocks and fine aggregate concrete, and the cost is reduced.

The utility model provides a double-layer roof eave gutter node structure. The double-layer roof eave gutter node structure comprises a reinforced concrete flat roof structure, the parapet wall is fixedly connected with the end part of the reinforced concrete flat roof structure; the fabricated light pitched roof structure is fixedly connected with the parapet wall; the parapet wall is provided with a plurality of flat roof drain pipes; the eave gutter is fixedly connected with the reinforced concrete flat roof structure; a rainwater pipe is arranged in the eave gutter and is used for organized drainage; a wall plate is arranged on one side of the eave gutter. The heat preservation performance and the waterproof performance of the building roofs in the cold and severe cold areas are effectively improved, and the drainage performance of the building roofs in the cold and severe cold areas is effectively improved through the method that the outer eave gutters extend from the pitched roofs and the flat roofs; installation is normative, construction is easy and convenient, materials are saved, economy and attractiveness are achieved, practicability is high, the construction method is compact and reasonable, construction is easy and convenient, the application range of the method is wide, the technical vacancy is made up, and the problems that no clear norms exist and secondary design is unreasonable are solved.

The invention relates to a door assembly (1) of a vehicle door, with an inner door part (2) having a parapet section (2a) and with a door module (3) with at least one guide rail (5) of a window lifter assembly, wherein the guide rail (5) has a rail section (12) projecting beyond the support upper side (4b) of a door module support (4) and having a screw dome (13) and a screw element (15), and wherein the parapet section (2a) has a joining opening (14) via which the screw element (15) is guided into the screw dome (13) for screwing the rail section (12) to the parapet section (2a).

Disclosed in the present invention is a surface-mounted lightning protection strip on a parapet, comprising a rectangular insertion slot formed on one side of the top of a marble plate; a through communicating hole is formed in one end of the top of the rectangular insertion slot, and galvanized flat steel is inserted to the inner wall of the rectangular insertion slot; a concrete test block is placed at the top of the communicating hole, a central through hole being penetratingly formed in the center of the concrete test block; positioning clamping slots are formed in the four sides of the concrete test block, and a rectangular positioning frame is fixed to the bottom of the concrete test block; symmetrically-distributed L-shaped hanging plates are welded to the outer wall of one side of the rectangular positioning frame, and a fixing plate is welded to the outer wall of the other side of the rectangular positioning frame. In the present invention, during lightning protection, a round-steel lightning protection strip is used for rapid lightning protection, a lightning rod is snap-fitted and mounted at the top of the round-steel lightning protection strip to further improve the lightning protection effect, and a triangular support structure at the bottom has sufficient stability, thus avoiding inclination of the lightning rod after fixation.

The utility model relates to a structure for additionally arranging a cornice on an existing building. The structure comprises an existing building roof; an existing building beam; one end of the cornice supporting rod is located above the existing building roof, and the other end of the cornice supporting rod extends out of the existing building roof and extends to the position below the existing building roof; the top of the existing parapet wall is detached to form a mounting surface parallel to the cornice supporting rods, and the mounting surface is parallel to the length direction of the existing parapet wall; the first mounting plate is arranged on the mounting surface, connected with the cornice and used for supporting the cornice; the supporting structure is installed on the outer side face of the existing building beam, and the supporting structure is connected with the cornice supporting rod and supports the cornice supporting rod. The supports are only installed on the existing parapet wall and the existing building beam to support the cornice, so that the cornice supporting structure does not need to damage an existing building roof and a waterproof layer, the existing parapet wall above the waterproof layer is locally dismantled, and the load of edge components can be reduced; and the increased load of the steel structure cornice is counteracted to a certain extent.

A wheeled conveyance straddles and squeezes a parapet or similar vertical wall from both the inside and outside vertical faces. Side wheels may be adjusted to be closer together or farther apart to accommodate the thickness of the wall being straddled. The conveyance traverses the parapet along the top edge, and at least one fastener driver suspended from the carriage faces one or both of the inside and outside vertical faces at some preferably adjustable distance below the top edge of the parapet. While the conveyance traverses the parapet, an actuator selectively and repeatedly actuates the fastener driver(s). Various sensors and controls are provided that permit the speed, fastener spacing, and travel distance to be adjusted. Position awareness and visual, auditory, and radio communications may optionally be employed.

The utility model relates to the technical field of roof drainage, and discloses an external roof rainwater drainage structure which comprises a roof, a building outer wall arranged on one side of the roof and a parapet wall arranged on the top of the building outer wall. A drainage hole is formed in the parapet wall, a drainage mechanism is arranged in the drainage hole, a drainage mechanism is arranged at the bottom of the drainage mechanism, and the drainage mechanism comprises a gutter inlet inner part arranged on the inner wall of the drainage hole, a steel grate arranged at the outer end of the gutter inlet inner part and a gutter inlet outer part extending to the outer side of the drainage hole. A waterproof layer is arranged on the surface of the gutter inlet inner part, the top of the steel grate is fixed to a parapet wall through expansion bolts, a water outlet is formed in the bottom of the gutter inlet outer part and is vertically downward, and the structure replaces an indoor drainage mode and has substantive significance on old community transformation.

The invention discloses a prefabricated energy-saving environment-friendly water-leakage-proof parapet wall convenient to install, and relates to the technical field of building structures, the parapet wall comprises an installation wall frame, a filling wall body is embedded in the middle of the inner side of the installation wall frame, and reinforcing protective nets are bonded to the two sides of the filling wall body; according to the parapet wall, through rigid cooperation between the splicing rectangular boxes and the mounting nails, the parapet wall is more stably mounted, the side faces of the parapet wall are more rapidly and conveniently spliced through the structural characteristic that the sealing side convex strips and the splicing side concave strips can elastically deform, the sealing side convex strips and the splicing side concave strips can elastically deform, the sealing side convex strips and the splicing side concave strips are not prone to deformation, and the sealing side convex strips and the splicing side concave strips are not prone to deformation. And waterproof sealing is conducted on the bottom face of the parapet wall and the edge of the roof through the sealing rubber base and the sealing front piece, the overall protection sealing performance of the parapet wall is further improved, the phenomena of water leakage and water seepage in the using process after the parapet wall is installed are effectively prevented, and the using safety of the parapet wall is improved.

The utility model discloses a hoisting fixture attached to a building parapet wall, which comprises a hoisting fixture structure and a wall body, the hoisting fixture structure is arranged on the wall body in a limiting manner, the hoisting fixture structure comprises a hoisting beam, the hoisting beam is connected with a connecting beam through a connecting bolt in a limiting manner, and an upper rod of the connecting beam is connected with a fixing nut. An adjusting screw rod is in threaded connection with the fixing nut, the lower end of the adjusting screw rod is fixedly connected with an oblique bevel gear, the front end of the oblique bevel gear is in meshed connection with a rocker, the lower end of the connecting beam and the adjusting beam are arranged in a relative sliding mode, and the rocker and the oblique bevel gear are both connected into the adjusting beam in a limiting mode; the connecting beams are connected in a limiting mode through top fixing bolts on the top plate, arrangement can be conducted when the building roof area cannot be occupied or the available space of the roof is narrow, the problem that efficient hoisting cannot be conducted in existing similar projects is solved, and assembly type design is adopted.

The utility model discloses a sunken column foot bottom surface installation coordination type sound insulation barrier which comprises foundation columns and a foundation surface between the foundation columns, the upper end faces of the foundation columns are lower than the upper end face of the foundation surface, a sound insulation barrier wall is arranged above the foundation columns and the foundation surface, and the sound insulation barrier wall is attached to the upper end face of the foundation surface. The sound insulation barrier wall is fixed to the upper portion of the foundation column through a fixing assembly. The sound insulation barrier has the beneficial effects that the bottom surface of the sound insulation barrier can be in close contact with closed surfaces such as a wall top, a roof parapet wall top and the ground, gaps are reduced, and the effects of reducing noise transmission of the sound insulation barrier and improving the noise reduction effect are achieved.

The technical problem to be solved by the utility model is to provide a hanging basket supporting system which is suitable for building a hanging basket system in a narrow space disturbed by a building at a corner of a parapet wall, is simple in structure, firm, reliable and convenient to mount and dismount, effectively solves the problems of insufficient overhanging length and single mounting angle of a front beam of the hanging basket, avoids a large amount of illegal operation phenomena, and improves the working efficiency. The lease cost is reduced, the safety risk is reduced, meanwhile, the construction time is saved, the device comprises a cantilever, a bracket, a front support and a balance weight device, and the top end of the bracket is detachably connected with a support assembly; the bottom end of the front support is matched with the support assembly to be jointly connected to the position, close to the front end, of the cantilever. And the counterweight device is mounted at the rear end of the cantilever.

To provide an environmental consideration type building which can effectively utilize natural energy even in a narrow site without being affected by a roof gradient.SOLUTION: In an environmental consideration type building 100, a parapet 40 is provided on a roof 10 of the building. A building material integrated-type photovoltaic power generation panel 50 is installed on an outer peripheral surface of an outer wall 20 of the building, on an outer peripheral surface of the parapet 40, or in a region striding from the outer peripheral surface of the outer wall 20 across the outer peripheral surface of the parapet 40.SELECTED DRAWING: Figure 3

The utility model relates to the technical field of photovoltaic equipment, in particular to a stable photovoltaic panel array, which comprises a parapet wall and a foundation frame, and the foundation frame is fixedly connected with the parapet wall; the foundation frame comprises a first connecting beam parallel to the parapet wall and a plurality of second connecting beams perpendicular to the first connecting beam, base foundations are fixedly connected to the bottoms of the two ends of the first connecting beam, and the two ends of each second connecting beam are fixedly connected with the first connecting beam and the parapet wall respectively. According to the embodiment of the invention, the foundation frame is installed on the roof parapet wall, the usage amount of the concrete foundation is reduced, a plurality of photovoltaic panels are integrated on one installation frame, the usage amount of supports is reduced, the construction and installation cost of the photovoltaic panel array is reduced on the whole, and the overall stability of the photovoltaic panel array is improved.

The invention discloses a parapet inner wall wallboard structure and a construction method thereof.The parapet inner wall wallboard structure comprises a composite base plate, a connecting layer and a flashing cover plate, the composite base plate comprises a heat preservation layer and a hydrophobic protection layer covering the outer side surface of the heat preservation layer, and the connecting layer is attached to the inner side and the bottom surface of the heat preservation layer; the flashing cover plate is used for being pasted to the root portion and the inner wall portion of the parapet wall and covers the top of the composite base plate, the flashing cover plate comprises a first extending end and a second extending end, the first extending end extends towards the inner side of the parapet wall and is provided with a fixing structure matched with a parapet wall pre-embedded mounting groove, and the first extending end covers the waterproof layer closing-in portion of the parapet wall in a pressing mode. And the second extending end is bent and extends downwards, and is pressed and attached to the outer surface of the hydrophobic protective layer, so that the technical problems that in the prior art, a parapet inner wall heat preservation waterproof structure is multiple in layer, complex in construction step and low in efficiency are solved.

The utility model relates to the technical field of steel structure installation, in particular to a connecting structure of a gable color plate parapet and a roof color plate, which comprises glass cotton, a gable color plate and a color plate flashing piece, the gable color plate is fixedly arranged on a wall surface purline, the glass cotton is arranged between the gable color plate and the wall surface purline, and the color plate flashing piece is arranged between the gable color plate and the wall surface purline. The color plate flashing piece is composed of vertical plates on the inner side, the outer side and an inclined plate in the middle, the inclined plate of the color plate flashing piece inclines downwards towards the roof color plate, the vertical plate on the inner side of the color plate flashing piece is inserted between the gable parapet color plate and the glass cotton, and the vertical plate on the outer side of the color plate flashing piece is in lap joint with the roof color plate in a sealing mode. A supporting assembly is arranged at the bottom of the color plate flashing piece. According to the connecting structure of the gable color plate parapet wall and the roof color plate, the heat preservation performance and the waterproof performance between the roof color plate and the gable color plate are effectively improved, the durability and the stability of a building structure are enhanced, and the problems existing in a node form of a traditional steel structure roof color plate and a gable color plate wall plate are solved.

The utility model relates to the technical field of buildings, and discloses a waterproof structure at the junction of an inverted roof and a wall body, which is characterized in that a roof floor is provided with a reinforced concrete floor, a rubber asphalt waterproof coating layer, a modified asphalt waterproof roll layer, an extruded polystyrene board layer and a reinforced fine aggregate concrete layer from bottom to top; a modified asphalt waterproof coiled material layer, a vertical protection masonry and a steel wire mesh cement mortar layer are arranged on the outer wall of the roof from the wall body to the wall surface; the modified asphalt waterproof coiled material layer is integrally formed by upturning and laying from the roof to the wall surface; the vertical protection masonry is built into a slope forming a 15-degree angle with the vertical face, and the two ends of a steel wire mesh in the steel wire mesh cement mortar layer are provided with fixing nails to be fixed to an outer wall and a floor. According to the characteristics of a building structure and an inverted roof structure at the joint of the roof and the outer wall and the joint of the roof and the parapet wall, the waterproof layer and the protective layer are specifically designed in a material and installation mode, connection and fixation of all layers of materials at the joint of the roof and the wall body are fully considered, and the waterproof effect is ensured.

The utility model provides an angle-adjustable roof cable net photovoltaic support system, which comprises a photovoltaic panel, high transverse cables, low transverse cables, high longitudinal cables and low longitudinal cables, and is characterized in that the two ends of the high transverse cables and the two ends of the low transverse cables are connected to a parapet wall through transverse adjusting devices; the high longitudinal cables and the low longitudinal cables are connected to the parapet wall through longitudinal adjusting devices, photovoltaic panels are obliquely installed between the adjacent high transverse cables and low transverse cables, the high longitudinal cables and the low longitudinal cables are perpendicular to the high transverse cables and the low transverse cables, and cross buckles are arranged at the crossed positions of the high longitudinal cables and the high transverse cables. A cross-shaped buckle is arranged at the crossed position of the low longitudinal cable and the low transverse cable, the high longitudinal cable is located below the high transverse cable, and the low longitudinal cable is located below the low transverse cable. The solar photovoltaic support is scientific and reasonable in structural design, stable in supporting, small in influence on a house body, high in practicability, capable of making adaptive changes according to the illumination incident angle, capable of improving the sunlight receiving rate of a photovoltaic panel and high in power generation efficiency.

The utility model relates to the technical field of building structures, and discloses a parapet wall construction node of a photovoltaic building integrated roof. Roof panels; the outer wall is provided with a parapet wall higher than the supporting layer; the surrounding plate is arranged on the outer wall in a surrounding manner; the surrounding plate comprises a first plate, a second plate and a third plate which are connected in sequence; the edge plate body of the third plate is close to the roof panel; the sealing piece is positioned between the edge plate body of the third plate and the roof plate; the folded edge is formed by bending and extending an edge plate body on one side, close to the parapet wall, of the roof panel; according to the parapet wall construction node of the photovoltaic building integrated roof, the coaming is arranged on the parapet wall and matched with the sealing piece and the anti-overflow folded edge, a complete and continuous protective covering area layer is formed, water flow is effectively prevented from permeating into the inner side of the roof through a gap in the connecting position of the parapet wall and the roof, and the waterproof effect is good. The waterproof performance of the roof is greatly improved, and meanwhile it is guaranteed that the heat preservation performance of the roof structure is not affected.

The invention discloses a flexible lifesaving device for a high-rise building. The flexible lifesaving device for the high-rise building comprises a lattice support, a winch, a bearing disc, a walking mechanism, a lifesaving lift car and a balance weight frame. The lifesaving lift car and the balance weight frame are arranged on the two sides of the lattice support respectively. The winch is arranged at the top end of the lattice support and connected with the lifesaving lift car through a lifting rope. The lifesaving lift car is used for taking escape persons, and the balance weight frame is used for completing balance weight of the high-rise building flexible lifesaving device. The lattice support is connected with a walking mechanism through a bearing disc on the bottom side, and the walking mechanism is arranged on a parapet wall on the top of a building and can move around the parapet wall. According to the device, autonomous escape of trapped residents and rescue of other people can be rapidly and accurately achieved, the device is erected through the building structure, an original building structure is not damaged, and the device is convenient to assemble and disassemble, convenient and fast to use, safe and reliable.

The utility model discloses a double-guide drainage structure for roof external drainage, and relates to the technical field of house building construction. According to the technical key points, the device comprises a first double-water-guide assembly arranged at the junction of a roof structure and a parapet wall, the first double-water-guide assembly comprises a horizontal main water drainage pipe, the horizontal main water drainage pipe is installed on the parapet wall in a penetrating mode, and the inner wall of the lower side of the horizontal main water drainage pipe is flush with a protective surface layer in the roof structure; a horizontal drainage branch pipe is arranged under the horizontal main drainage pipe, and the lower side inner wall, located at one end of the inner side of the parapet wall, of the horizontal drainage branch pipe is aligned with the lower bottom of a heat preservation layer in the roof structure. The ends, located on the outer side of the parapet wall, of the horizontal drainage branch pipe and the horizontal main drainage pipe are fixedly connected with a vertical outer drainage pipe. By means of the horizontal main water drainage pipe and the horizontal water drainage branch pipe in the first double-water-guide assembly, accumulated water above a protective layer in the roof structure can be effectively drained, and when accumulated water exists in the roof structure, the accumulated water in the roof structure can be effectively drained.

The utility model relates to the technical field of parapet wall root waterproof structures, and discloses a building roof parapet wall root waterproof structure which comprises a parapet wall, a concrete line is fixedly connected to the parapet wall, a water falling opening is formed in the parapet wall, a filter screen is fixedly connected to the water falling opening, an arc angle is arranged on the parapet wall, and the concrete line is fixedly connected to the concrete line. The building roof parapet wall root waterproof structure comprises a parapet wall, a roof is fixedly connected to the parapet wall, a first layer is arranged on the parapet wall, and a second layer is arranged on the first layer. When the building roof parapet wall root waterproof structure is constructed, it is guaranteed that rainwater can be rapidly and effectively drained when accumulated through a water falling opening; the roof and parapet wall root leakage problem caused by excessive accumulated water is prevented, the waterproof performance of a building is improved through the multi-layer waterproof material, the durability of a building structure is enhanced, the problem of foaming or hollowing of the waterproof layer is effectively solved through the arc corners arranged on the base layer, and firm bonding between the waterproof layer and the base layer is guaranteed.

The invention relates to the technical field of parapet wall curtain wall inner handrail structures, in particular to a parapet wall curtain wall inner handrail structure and an implementation method thereof.The parapet wall curtain wall inner handrail structure comprises an embedded part, the top of the embedded part is connected with a connecting base, the top of the connecting base is provided with an inserting column, and the inserting column is inserted into an inserting groove formed in the bottom of a handrail vertical rod; through holes are simultaneously formed in the outer sides of the upper and lower ends of the handrail vertical rods and the tops of the slots; the parapet wall curtain wall inner handrail structure and the implementation method have the beneficial effects that when the parapet wall curtain wall inner handrail structure is installed, before a parapet wall is poured with concrete, the installation position of the embedded part is determined according to the design requirement, the embedded part is installed according to the set position, and after the embedded part is installed, the embedded part is installed in the set position; and after concrete of the parapet wall reaches certain strength, inserting grooves in the bottoms of the handrail vertical rods are aligned with inserting columns on the tops of the embedded parts and the tops of the connecting bases, and the handrail vertical rods are installed on the tops of the connecting bases.