62results about How to "High turnover utilization" patented technology

The invention relates to a BIM technology-based bridge dynamic construction and resource allocation method. The method comprises the steps of establishing a BIM model of a bridge in a BIM system, dividing the bridge into a plurality of components, dividing construction procedures, and performing engineering quantity statistics; inputting the construction process, the theoretical time length and the connection sequence of each component in the BIM system, and automatically generating a bridge project construction progress plan; determining a corresponding project quota, inputting the project quota of each process in the BIM system, and automatically generating a project quota demand plan; correcting and dynamically adjusting the bridge project construction progress plan and the project quota demand plan according to the actual construction progress; and allocating resources according to the bridge project construction progress plan and the project quota demand plan. According to the BIM technology-based bridge dynamic construction and assembly and resource allocation method provided by the invention, the whole construction period is controlled based on the BIM technology, and the theoretical plan is dynamically adjusted according to the input actual construction progress condition, so that plan lag is avoided.

The utility model particularly discloses a high-altitude anti-falling device in a limited space, which comprises two right-angle steel pipes including right-angle steel pipe transverse sections and right-angle steel pipe vertical sections, and the two right-angle steel pipe transverse sections are in threaded connection; the two vertical steel pipes are rotationally connected with the vertical sections of the right-angle steel pipes respectively, and the rotating axes of the vertical steel pipes are orthogonal to the length directions of the vertical steel pipes and parallel to the transverse sections of the right-angle steel pipes; the locking assembly is used for locking the vertical steel pipe and the vertical section of the right-angle steel pipe; the net hanging assemblies are arranged on the inner sides of the vertical sections of the vertical steel pipes and the right-angle steel pipes and used for hanging ropes; the rope is hung on the net hanging assembly; the fixing assembly is arranged at the end, away from the right-angle steel pipe, of the vertical steel pipe and used for fixing the high-altitude anti-falling device to a building outer frame steel pipe. According to the anti-falling net bag device, one side of the anti-falling net bag device can abut against a supporting object through adjustment and folding in a narrow space, net bag devices of different shapes are formed, and the anti-falling effect is achieved.

The utility model relates to the technical field of engineering construction, in particular to a connecting structure with adjustable parallel connection length for a few-support system, which comprises a connecting standard pipe fitting and a connecting flange, and the connecting flange comprises a steel hoop used for being arranged on a steel pipe pile or a steel stand column. The two side ends of the steel hoop are each provided with a flange plate used for being connected with the end of a standard pipe fitting. The connecting sleeve is used for connecting two sections of standard pipe fittings to achieve splicing, and anchoring structures used for being connected with the standard pipe fittings to be matched are arranged at the two ends of the connecting sleeve. The connecting structure is convenient to mount and dismount, and welding operation is greatly reduced.

The utility model discloses a pile body positioning and perpendicularity monitoring device based on a precast pile, which comprises a main body assembly comprising a precast pile and a guide frame sleeved on the outer side of the precast pile, an adjusting assembly arranged on the guide frame and comprising a first adjusting piece and a second adjusting piece, the first adjusting piece is located on the guide frame, and the second adjusting piece is located on the guide frame. The setting device has the advantages that the setting device with the laser range finder is adopted, real-time monitoring and data visualization in the precast pile construction period are achieved, meanwhile, the setting device has the precast pile positioning function, flow construction can be organized, and the turnover utilization rate is high.

The utility model discloses a stirrup bending tool which comprises a wrench and a main reinforcement sleeve. The main reinforcement sleeve is of a hollow cylindrical structure with an opening in one side, and the main reinforcement sleeve can be coaxially connected to the main reinforcement in a sleeving mode through the opening. Stirrup grooves of U-shaped structures are formed in the edges of the two sides of the opening, the stirrup is wound around the main reinforcement, the stirrup penetrates through the two stirrup grooves, and the stirrup can abut against the ends, away from the opening, of the stirrup grooves; the wrench is of a long-strip-shaped structure, and one end of the wrench is fixedly connected with the other side, away from the opening, of the main rib sleeve. The utility model relates to the technical field of reinforcing steel bar machining tools, and can solve the problem that in the prior art, a binding tool is poor in stirrup bending machining quality.

This invention discloses a pre-positioned steel support system suitable for small, ultra-deep foundation pits, comprising several lattice columns, several connecting devices, pre-positioned steel supports, several steel strands, several through-hole jacks, several servo cylinders, and a hydraulic system. The pre-positioned steel supports include a steel waler and several corner horizontal braces set at the four corners of the steel waler. Several servo cylinders are spaced along the circumference of the steel waler on its outer surface. The servo cylinders extend and retract under the action of the hydraulic system to achieve active deformation control of the diaphragm wall. Several through-hole jacks, under the action of the hydraulic system, simultaneously raise and lower the pre-positioned steel supports by synchronously extending and retracting the corresponding steel strands. This invention enables a construction method of pre-positioning concrete or steel supports for simultaneous excavation, lowering, and support, effectively shortening the construction period and reducing the time without support during over-excavation. It has advantages such as high mechanization, strong construction safety, and high turnover rate.

The invention relates to a construction device and method for construction of unequal-height beam webs through equal-height beam side formworks, and belongs to the technical field of building beam construction.The device comprises a vertical rod with an adjustable bearing, a beam bottom height adjustable early-dismantling jacking, a beam bottom rib, a beam bottom formwork, double joists and the beam side formworks, and the double joists are installed on the vertical rod with the adjustable bearing; the positions of the double joists can be adjusted by adjusting the adjustable bearing vertical rods, the beam side molds are installed on the double joists, the beam bottom height adjustable early-dismantling jacking supports are installed on the double joists, the beam bottom rib and the beam bottom mold are installed on the beam bottom height adjustable early-dismantling jacking supports, and the beam bottom rib and the beam bottom mold are located between the beam side molds. The positions of the beam bottom rib and the beam bottom die can be adjusted by adjusting the beam bottom height-adjustable early-dismantling jacking, and construction of unequal-height beam webs is achieved. According to the construction method, beam side formworks of the same specification can be used for construction of beam webs of different heights, the specifications and models of the beam side formworks can be reduced, the management and storage cost of the formworks can be reduced, and the turnover utilization rate and the construction efficiency of the formworks can be improved.

The utility model belongs to building construction technical field provides a kind of tooling protection fence of overturning mesh, including inner stand, outer stand, inner guardrail, outer guardrail, rotating shaft, adjusting screw rod;Inner stand is slidably sleeved in the inner side of outer stand, adjusting through-hole is equipped on outer stand side wall, adjusting screw hole is equipped on inner stand side wall;Outer stand side wall is equipped with outer connecting plate, outer guardrail is connected with outer connecting plate by bolt, inner guardrail top end is hinged with outer guardrail top end by rotating shaft, inner connecting plate is equipped on inner stand side wall.The protection fence, when the protection height requirement is lower, can be directly used, when the protection height requirement is higher, by the inner guardrail is turned up to vertical state to then, inner stand is extracted upwards, and inner stand is connected with inner guardrail by bolt, inner guardrail can be fixed.I.e. by the configuration of two guardrails, and two guardrails are hinged by rotating shaft, can adapt to the use scene of different protection height requirement.

A truss-type formwork system for cast-in-place steel structure floor slabs includes a main structural I-beam, a support beam assembly, and a mounting system. The mounting system comprises: a plate assembly located at the flange of the main structural I-beam, including a fixed plate I and a fixed plate II disposed opposite to each other; a hanger rod disposed on the side end of the web of the main structural I-beam and used to connect the fixed plate I and the fixed plate II; an adjusting nut disposed at the connection between the fixed plate I and the hanger rod, and between the fixed plate II and the hanger rod; an abutment plate disposed on the hanger rod and located on the side end of the flange of the main structural I-beam; and a support beam disposed on the hanger rod and used to install the support beam assembly. This invention, by setting up a mounting system, is applicable to both main structural steel beams with a flange width greater than 200mm and those with a flange width less than or equal to 200mm. Furthermore, it exhibits high structural strength, good stability, and advantages such as simple installation, flexible application, and high turnover rate.

The utility model provides a carrying system and a carrying jig frame thereof. The carrying jig frame is used for bearing the storage tank and comprises a base, a plurality of supporting pieces and at least two bracket assemblies. Wherein the multiple supporting pieces are arranged on the base at intervals in the longitudinal direction and used for supporting the storage tank, and the axis of the storage tank extends in the longitudinal direction. The bracket assemblies are arranged on the base in the longitudinal direction at intervals, the two transverse ends of each bracket assembly extend out of the base, the top of each bracket assembly is lower than the top of the supporting piece, and the bracket assemblies are used for being matched with the conveying trolley to achieve movement of the carrying jig frame and the storage tank. The carrying jig frame can be repeatedly utilized to bear the storage tank, the storage tank can be conveniently moved, the occupied site of the storage tank can be converted, then the occupied site can be conveniently turned over, and the site turning utilization rate is increased.

The utility model provides a bathroom hanging mould detachable shaping reinforcement device belongs to bathroom hanging mould construction technical field, this bathroom hanging mould detachable shaping reinforcement device includes the rod body and sets up the positioning spare at the both ends of rod body, the rod body includes fixed rod and movable rod, and the one end fixed connection of movable rod is close to fixed rod has inserted rod, and inserted rod can insert the inside of fixed rod, and is provided with adjusting assembly between fixed rod and movable rod, the positioning spare includes mounting panel, first bracing piece and second bracing piece, and the one end of mounting panel is provided with the connecting block, and second bracing piece sets up at the bottom of connecting block, and first bracing piece sets up at the bottom of mounting panel, this device cooperates between telescopic rod body and positioning spare, after construction is completed, and the device can dismantle fast and save strength, solves the problem that traditional plank reinforcing mode dismantles difficultly, and the material is easily damaged, can adapt to the bathroom of different bay size, effectively saves construction cost.

The utility model relates to the technical field of safety protection facilities, in particular to a novel inspection well assembling protective fence which comprises two semicircular protective fences of the same structure, each protective fence is composed of an enclosure frame and a fixing frame, the enclosure frame comprises a plurality of first semicircular rings, the upper first semicircular ring is connected with the lower first semicircular ring through a first vertical protective pipe, and the lower first semicircular ring is connected with the fixing frame through a second vertical protective pipe. A protective net is arranged between every two adjacent first vertical protective pipes. The fixing frame is arranged below the enclosure frame and comprises a plurality of second semicircular rings concentric with the first semicircular rings and different in diameter, the upper semicircular ring and the lower semicircular ring are connected through second vertical protection pipes, and the second semicircular ring at the top is further connected with the first semicircular ring at the bottom through a plurality of transverse fixing pipes. The protective fence is firm and stable in fixation, does not damage a road surface after being fixed, is convenient to mount and dismount, and can be effectively prevented from overturning and shifting after being fixed.

The utility model discloses an adjustable pump pipe frame which comprises a bearing ring, bearing plates are fixedly connected to the left side and the right side of the bearing ring, a flexible lining is fixedly connected to the interior of the bearing ring, a pump pipe is arranged in the flexible lining, a plurality of first supporting legs are fixedly connected to the lower sides of the bearing plates, and second supporting legs are arranged on the outer sides of the first supporting legs. The pump pipe frame comprises a first supporting leg and a second supporting leg, a plurality of inserting openings are formed in the second supporting leg and the first supporting leg, spring round buttons are arranged in the inserting openings, a supporting frame is fixedly connected between every two second supporting legs, and flexible foot pads are fixedly connected to the lower sides of the second supporting legs. And the impact of the pump pipe on the bottom die in the pumping process is effectively avoided.

The invention relates to the field of bridge construction, in particular to inspection well hoisting equipment. The main component of the inspection well hoisting equipment provided by the invention is a longitudinal hoisting telescopic device; a transverse supporting device, a clamping device and a pressing self-locking mechanism are arranged. After the hoisting equipment is in place, a lifting rope is connected with a lifting lug of the longitudinal hoisting telescopic device, at the moment, the pressing self-locking mechanism is in a locking state, and the clamping arms are in an opening state. The clamp is placed outside the concrete inspection well needing to be hoisted, the bottom box and the top box of the pressing self-locking mechanism are pressed and separated through the self gravity of the clamp, at the moment, hoisting equipment hoists, drives the longitudinal hoisting telescopic device to move and drives the clamping device to clamp the inspection well, and the automatic hoisting process is achieved. And after the inspection well reaches the hoisting position accurately, the hoisting equipment is lowered, the distance between the fixing bolts is increased, the sliding cross beam moves inwards, the clamping device releases the inspection well, and the automatic hoisting process is achieved.

The temporary road suitable for the engineering construction period comprises a composite beam plate, a plurality of supporting columns are arranged below the composite beam plate, and the supporting columns are connected with the composite beam plate through cushion block assemblies. The composite beam slab comprises a beam slab pavement, a plurality of cross beams and a plurality of longitudinal beams are arranged at the bottom of the beam slab pavement in a staggered mode, the cross beams or the longitudinal beams are connected with the upper portions of cushion block assemblies, and the lower portions of the cushion block assemblies are connected with the upper portions of the supporting columns. Compared with the existing steel structure pavement and concrete beam plate structure, the product has the advantages of light weight, low manufacturing cost, convenience in transportation, easiness in installation and the like. The product has the biggest advantages that the product can be repeatedly turned over, the turnover utilization rate is high, the width requirement of the pavement is met according to the specific road design, and the thickness requirement of bearing capacity is met.

The utility model discloses a two-way laminated slab of extending part reinforcing steel bars, which comprises a two-way laminated slab, a first non-extending area, a first extending area and a second non-extending area are sequentially formed on the two-way laminated slab along the length direction, a plurality of first extending reinforcing steel bars are arranged in the first extending area, and a plurality of second extending reinforcing steel bars are arranged in the second extending area. The two ends of the first extending steel bars extend out of the two long edges of the two-way laminated slab, and the multiple first non-extending steel bars are arranged in the first non-extending area and the second non-extending area; a third non-extending area, a second extending area and a fourth non-extending area are sequentially formed on the two-way laminated slab in the width direction, a plurality of second extending steel bars are arranged in the second extending area, and the two ends of each second extending steel bar extend to the outer portions of the two short edges of the two-way laminated slab. And a plurality of second non-extending steel bars are arranged in the third non-extending area and the fourth non-extending area. According to the utility model, the problems of high construction cost and low construction efficiency of a bidirectional laminated slab connection mode in the prior art can be solved.

The invention provides an overpass road existing line gate-type pier large-span prestress bent cap and a construction method, and the construction method comprises the following steps: after the construction of a lower structure of the bent cap is completed by utilizing an original terrain condition on site, protecting the exterior of a pier column, then carrying out soil body backfilling and compaction leveling construction, and playing a supporting role by utilizing the backfilling soil body; compared with traditional steel bar supporting construction, operation is easy and convenient, construction safety is high, the construction period is effectively shortened, and the overall construction quality of the bent cap is well guaranteed; the inclined steel pipe stand columns are arranged on the side face of the cover beam to support the prestress operation platform, the I-shaped steel sliding rails and the cross beams are installed above the inclined steel pipe stand columns, the operation space and convenience of workers are increased, a tensioning jack can be conveniently suspended by means of the cross beams, the position of the jack can be flexibly adjusted at high altitude, and field tensioning operation is facilitated.

The application discloses a construction method of a small-sized super-deep foundation pit using a front-arranged steel support system, and adopts a front-arranged steel support system which comprises a plurality of lattice columns, a plurality of connecting devices, a front-arranged steel support, a plurality of steel strands, a plurality of through-type jacks, a plurality of jack foundations, a plurality of steel strand guide frames, a plurality of servo oil cylinders and a hydraulic system. The front-arranged steel support system can realize the construction method of front-arranging concrete support or steel support and lowering and supporting simultaneously with excavation, effectively shortens the construction period and the time of over-excavation without support, and can effectively transfer the self-weight of the front-arranged steel support and the self-weight of the upper cast-in-place concrete to the ground and keep the front-arranged steel support horizontal through the adjustable angle support arranged on the steel support, and can guarantee that the servo oil cylinder is not subjected to vertical torsional force when supporting the underground continuous wall in the horizontal direction, thereby improving the construction safety and the rationality of equipment stress.

The utility model provides a high-adaptability prefabricated column steel bar positioning device. The high-adaptability prefabricated column steel bar positioning device comprises a steel bar positioning lock wheel, a transmission mechanism and a positioning plate. A first hollowed-out part for a reserved steel bar of a prefabricated column to penetrate through is formed in the positioning plate, the transmission mechanism is arranged at the edge of the first hollowed-out part of the positioning plate, and the steel bar positioning lock wheels are arranged at the first hollowed-out part of the positioning plate at intervals and are in transmission connection with the transmission mechanism. The positioning plate is arranged on the prefabricated column, so that the plurality of reinforcing steel bar positioning lock wheels are sleeved and locked on a plurality of reserved reinforcing steel bars of the prefabricated column in a one-to-one correspondence manner. The utility model relates to the technical field of prefabricated part construction, and can solve the problem that in the prior art, reserved steel bars of a prefabricated column are inconvenient to position.

The utility model relates to an insulation board positioning and supporting integrated tool, and belongs to the technical field of building construction. The tool comprises a bracket and a blocking piece, the bracket is mainly composed of a vertical batten and a horizontal batten which are of a T-shaped structure, screw fixing holes are formed in the vertical batten, and a long sliding groove is formed in the horizontal batten; the blocking piece is mainly composed of a horizontal bottom plate, a vertical rib plate and a semicircular baffle, and a positioning stud is arranged on the horizontal bottom plate. And the separation blade is detachably mounted and fixed on the bracket. By using the tool disclosed by the utility model, in the construction process of the shock insulation layer, the first-step heat insulation board pasting height is consistent and error-free, the distance is uniform, mortar joints are uniform, the use amount of heat insulation nails is reduced, and the heat insulation boards can be arranged according to a layout map. By using the tool, the construction cost is reduced, the construction progress is accelerated, and the engineering quality is improved.

The present invention discloses a method for preventing a high-pressure spraying trolley from rolling over, comprising setting a track along the direction of the high-pressure spraying trolley's travel route, the track and the high-pressure spraying trolley having a certain distance, a walking mechanism being arranged in the track, the walking mechanism being connected to the legs of the high-pressure spraying trolley through a horizontal crossbeam, and the high-pressure spraying trolley driving the walking mechanism to travel along the track through the crossbeam, thereby preventing the high-pressure spraying trolley from rolling over. The present invention sets embedded blocks and rail grooves on the ground, and installs them on both sides of the travel route set by the high-pressure spraying trolley, so that the high-pressure spraying trolley can travel along the rail grooves, thereby ensuring that the high-pressure spraying trolley can travel and move in the set direction without affecting its normal construction, and preventing it from rolling over, thereby ensuring construction safety.

The utility model discloses an adjustable joint for butt joint of box-type columns, and aims to overcome the defect that the perpendicularity between the box-type columns cannot be adjusted at will when the existing box-type columns are installed and butt-jointed. The connecting device comprises a plurality of groove-shaped connecting pieces, connecting bodies are arranged on the groove-shaped connecting pieces, an adjusting bolt is arranged between the connecting bodies on the two groove-shaped connecting pieces, the adjusting bolt comprises a bolt cap and connecting screw rods arranged at the two ends of the bolt cap, and the connecting screw rods at the two ends of the adjusting bolt are in threaded connection with threaded holes in the connecting bodies respectively. By the adoption of the connecting mode, single-channel steel and double clamping plates can be used for replacement, the steel consumption is reduced, the perpendicularity and other deviations of the stand column can be adjusted through the adjusting bolts, the connecting pieces can be used heavily, and the turnover utilization rate of materials is increased.

The utility model discloses a reusable shaped vertical pump pipe support device, which comprises an upper layer support frame, a lower layer support frame and an elastic clamp, the upper layer support frame and the lower layer support frame are connected together, each layer support frame is formed by splicing a plurality of standard blocks, one corner of each of the four standard blocks in the middle is provided with a vertical arc wall, the four arc walls are spliced into a vertical hollow cylinder, and the elastic clamp is arranged on the lower layer support frame. A fixing piece is arranged on the upper portion of the inner wall of the arc wall, a limiting hole is formed in the fixing piece, the elastic clamp strides over the upper portion of the arc wall in an inverted-U shape, a first supporting foot below the elastic clamp is inserted into the limiting hole, and a second supporting foot below the elastic clamp is a free end. The utility model adopts the shaped steel member, can be repeatedly used by one-time processing, is convenient to use, flexible in arrangement, neat and attractive, stable in support and high in turnover utilization rate, can be manufactured in a customized manner according to actual requirements on site, and obviously enhances the effect of supporting the pump pipe on site.

The utility model relates to the technical field of building construction, and discloses a diameter-adjustable hole opening formwork which comprises a first flexible steel sheet, a second flexible steel sheet and a third flexible steel sheet. The two second flexible steel sheets are arranged in parallel, a gap is reserved between the two second flexible steel sheets, and the two ends of the first flexible steel sheet are inserted between the two second flexible steel sheets from the two ends of the second flexible steel sheets respectively; the supporting assembly is arranged between the first flexible steel sheet and the second flexible steel sheet and used for controlling the first flexible steel sheet and the second flexible steel sheet to form a cylinder shape and controlling the diameter of the cylinder formed by the first flexible steel sheet and the second flexible steel sheet. The appearance quality of concrete at the reserved hole is improved to a certain extent, meanwhile, round holes of different sizes can be reserved by controlling the positions of the supporting rods, and the turnover utilization rate of the hole formwork is improved.

This invention discloses a rapid positioning welding jig for spherical nodes in a space frame and its usage method, relating to the field of welded spherical space frame assembly construction technology. It includes a welding base, a member positioning device, an adjustable base for the support rod, a member support rod, and a top support. The welding base is used to place the welded sphere. The member positioning device is sleeved on the welded sphere to achieve precise layout of the contact position between the member and the welded sphere. The adjustable base for the support rod is arranged around the welding base, and the member support rod is installed on the adjustable base. The top support is hinged to the top of the member support rod to support one end of the member. The other end of the member is welded and fixed to the welded sphere. The rapid positioning welding jig for spherical nodes in a space frame provided by this invention and its usage method solve the problems of difficulty in ensuring positioning accuracy, cumbersome installation and dismantling of fixing devices, difficulty in moving them, high construction safety risks, and difficulty in controlling welding deformation in the prior art.

The utility model discloses a steel structure assembly formula vertical climbing ladder mounting structure, include: steel column, hang ladder standard section, it includes angle steel ladder beam and step stick, hang ladder telescopic section, set up between two groups of hang ladder standard section and make two groups of hang ladder standard section be connected as hang ladder whole, it includes outer sleeve tube, inner sleeve rod and after supplement step lever, the inner sleeve rod is slidably telescopic and is located in the outer sleeve tube, the outer sleeve tube is connected with the inner sleeve rod through the connecting bolt, the outer sleeve tube and inner sleeve rod all are located in the female angle side of angle steel ladder beam, the outer sleeve tube is bolted with the angle steel ladder beam of upper hang ladder standard section, the inner sleeve rod is bolted with the angle steel ladder beam of lower hang ladder standard section, the after supplement step lever is detachably installed in a pair of outer sleeve tube front end face and / or a pair of inner sleeve rod's front end face, hang connection subassembly is used for connecting hang ladder whole with steel column. Modular design and hook type installation of the application greatly shorten the installation and removal time, and greatly improve the turnover utilization rate.

The utility model discloses a kind of wall connecting devices of bridge pier column safety ladder stand, belong to bridge construction technical field, mainly used for the safety ladder stand installation of bridge pier column.The technical problem to be solved by the utility model is to provide a kind of wall connecting devices of bridge pier column safety ladder stand, including wall connecting locking mechanism and the ladder stand reinforcing fixed mechanism of the U-shaped structure of the open towards wall connecting locking mechanism;Wall connecting locking mechanism includes the first big arm and the second big arm of parallel arrangement, ladder stand reinforcing fixed mechanism is bolted with wall connecting locking mechanism;Two parallelly arranged first arm frames are bolted on the first big arm, two parallelly arranged second arm frames are bolted on the second big arm, first, second arm frame is bolted by the butt joint of the U-shaped bolt of open downward;Adjacent first, second arm frame enclose with first, second big arm to form square cavity for bridge pier column to pass through;To improve the installation efficiency of wall connecting device, reusable and guarantee safe construction.

The utility model discloses a kind of fabricated steel support devices, it is related to supporting device technical field.The fabricated steel support device, comprising: a base, two columns, opposite and vertically set in the top of the base;A connecting piece, along horizontal direction is set between two the column, and close to the top side of the column;And two locking pieces, respectively ring set in the base, and respectively with the bottom of two the column is connected;Wherein, by the locking piece, two the column and the connecting piece can be detachably set on the base, to fix different models of steel support.The utility model, although it is realized that steel support body can be more stable to the current support assembly type hoop, but it still has single steel support hoop weight, not easy to install, and welding workload is big, welding quality is not easy to control, using gas cutting means disassembly, after demolition, most of scrap processing, greatly reduce material turnover utilization, increase construction cost problem.

The utility model discloses a detachable and reusable tower crane foundation which comprises a box frame, the box frame comprises four outer boxes which are connected end to end, an inner box is connected between two opposite outer boxes, isolation boxes are connected between the inner box and the other two outer boxes, vertical holes are defined by the isolation boxes, the outer boxes and the inner boxes, and the vertical holes are communicated with the box frame. The outer box, the inner box and the isolation box are box bodies with bottoms and without covers; the balancing weight is embedded in the box body; the top end of the latticed column extends into the vertical hole, and the four sides of the latticed column are connected to the box body; and the lower end of the tower crane base is arranged in the vertical hole and placed at the top end of the latticed column, and the four sides of the tower crane base are connected to the box body correspondingly. The utility model solves the problems that the traditional reinforced concrete cast-in-place tower crane foundation cannot be recycled and the construction period is long.

This utility model discloses a reinforcement structure for ultramodular thin-walled fair-faced concrete decorative cylindrical formwork, comprising: a formwork with multiple sections; a bottom limiting device installed at the bottom of the formwork to fix it; an outer ring reinforcement device with multiple sections spaced along the height of the formwork, including steel bands clamped to the outside of the formwork; a splicing and fixing device for connecting adjacent upper and lower formwork sections; and an adjustable upper limiting device located at the upper end of the formwork between the formwork and the steel column, comprising an outer circular hoop abutting against the inner side of the formwork, an inner circular hoop fitted onto the steel column, and adjustable connecting rods connecting the inner and outer circular hoops respectively. The verticality of the formwork and the thickness of the concrete are adjusted by adjusting the length of the connecting rods. This application allows for adjustable splicing dimensions of the formwork, convenient assembly and disassembly, and the ability to be reused eliminates many drawbacks of traditional wooden formwork, such as low turnover rate, low recycling rate, and slow construction speed.