57results about How to "Reduce construction procedures" patented technology

The utility model discloses a tool for controlling the elevation of an induction plate of a linear motor, which comprises a cross beam and a measuring assembly, and a first positioning assembly and a second positioning assembly are respectively arranged at two ends of the cross beam, the measuring assembly comprises a sliding seat which is slidably installed on the cross beam and is used for measuring the transverse distance of the measuring points of the induction plate, and a caliper which is installed on the sliding seat and is used for measuring the vertical distance of the measuring points of the induction plate. Through the positioning assemblies arranged on the two sides of the cross beam and the measuring assembly moving on the cross beam, measurement of the transverse distance and the longitudinal distance of the measuring points of the induction plate is achieved, the high-precision requirement for height installation of the induction plate is met, the elevation control precision in the installation process of the induction plate is improved, the construction quality is improved, and the risk of construction rectification is reduced.

The invention relates to the technical field of gypsum, and discloses a slope protection material based on building beta gypsum as well as a preparation method and a construction method thereof, the slope protection material comprises 40-55 parts of building beta gypsum, 8-15 parts of phosphogypsum, 2-5 parts of a curing agent, 10-20 parts of fly ash and 40-60 parts of water; the curing agent comprises calcium hydroxide, potassium carbonate, acrylic resin and calcium carbonate. After the slope protection material provided by the invention is cured, the leachate of the slope protection material reaches the first-grade discharge water standard through a vibroflotation water method. The innovation ensures the environmental protection property of the material in the application process, solves the problem of low water stability of the traditional beta gypsum, increases the water softening coefficient of the building beta gypsum to 0.7, solves the influence on the environment in the treatment process, and meets the requirements of green construction and sustainable development.

The invention relates to the technical field of inorganic fiber spraying materials, in particular to a biodegradable inorganic fiber spraying thermal insulation material and a preparation method and spraying method thereof, spraying equipment and a ship component. The biodegradable inorganic fiber spraying thermal insulation material comprises a component A, a component B and a component C, the component A comprises the following components in parts by weight: 8-12 parts of polyvinyl alcohol, 0.5-1 part of a silane coupling agent, 0.1-0.3 part of a mildew preventive and 80-90 parts of water; the component B comprises the following components in parts by weight: 5-15 parts of sodium borate, 5-15 parts of glycerol and 70-90 parts of water; the component C comprises bio-soluble refractory fibers. The biodegradable inorganic fiber spraying thermal insulation material provided by the invention has the characteristics of reducing construction procedures and reducing the influence on human health, and a refractory fiber thermal insulation layer formed by the biodegradable inorganic fiber spraying thermal insulation material has excellent fireproof performance and can meet the requirements of A-level fireproof separation in the third part of the international fire resistance test program application rules in 2010 published by the International Maritime Organization.

The present invention provides a prefabricated lifting steel bar frame, which belongs to the technical field of railway construction. It includes a chassis bracket, a top plate hanger, and a hanger for connecting the top plate hanger and the chassis bracket up and down into a whole: the chassis bracket includes a frame body I composed of longitudinal beams and transverse beams, an inner mold support beam parallel to the longitudinal beams of the frame body I, an outer mold support beam located outside the transverse outer frame, oblique supports distributed in the frame body I, and a lifting point I and a running pulley located at the overlap of the longitudinal and transverse beams; the top plate hanger includes a frame body II composed of longitudinal beams and transverse beams, oblique supports distributed in the frame body II, and a lifting point II located at the overlap of the longitudinal and transverse beams corresponding to the lifting point I, and a lifting lug is also provided on the transverse beam. The prefabricated lifting steel bar frame of the present invention can directly lift the prefabricated steel bar frame to the working pit for one-time pouring of concrete, which increases safety, saves construction period, and effectively reduces construction costs.

The application provides a foundation pit supporting structure of deep silt stratum and a construction method thereof. The foundation pit supporting structure comprises cast-in-situ bored piles arranged in rows and a water stop curtain. The water stop curtain comprises a plurality of rotary jet piles located in the silt layer and the upper stratum thereof and a plurality of swing jet piles located in the lower stratum of the silt layer. The cast-in-situ bored piles are constructed by using rotary drilling machines; adjacent rotary jet piles are overlapped and engaged with each other; adjacent swing jet piles are overlapped and engaged with each other; and adjacent cast-in-situ bored piles are not engaged with each other. The application combines the construction of the water stop curtain and the cast-in-situ bored piles, firstly constructs the rotary jet piles of the water stop curtain, overlaps and engages the rotary jet piles with each other, then constructs the cast-in-situ bored piles by using rotary drilling machines in the rotary jet piles, the diameter of the rotary jet piles is larger than that of the cast-in-situ bored piles, the former serves as the water stop curtain and also serves as the temporary casing during the construction of the latter, one pile has two uses, the construction process is reduced, the engineering cost is lowered, and the application has good popularization value.

The utility model relates to a steel structure fixing structure on a concrete waterproof coiled material, which is characterized in that a steel plate is arranged above a waterproof coiled material layer, an anchor bolt penetrates through a vertical first anchoring hole corresponding to the waterproof coiled material layer and a concrete structural plate, and a waterproof coating layer is arranged between the anchor bolt and the first anchoring hole of the waterproof coiled material layer; the anchor bolt, the waterproof roll layer and the waterproof coating layer jointly form a waterproof closed loop layer, so that water leakage is basically avoided; the bottom face of the steel stand column is welded to the upper portion of the steel plate, the steel plate is fixed to the concrete structural plate of the top plate through the anchor bolts and the nuts, then the basement top plate can be used for supporting the stand column, the stress area is large, and the stress effect is better; the protective layer is arranged to cover the waterproof roll layer, the steel plate, the upper ends of the anchor bolts and the nuts, so that the ground is not interfered; due to the fact that the steel plate anchor bolts and the nuts are constructed along with the basement top plate, independent foundations do not need to be additionally arranged, construction procedures are fewer, and the period is shorter.

The utility model relates to the technical field of rail traffic engineering, in particular to a comprehensive grounding structure of a city railway ballast bed, which comprises a longitudinal grounding steel bar, a transverse grounding steel bar and a comprehensive grounding steel bar mesh, the comprehensive grounding reinforcing mesh is embedded in the bottom of each roadbed slab, and the comprehensive grounding reinforcing meshes at intervals are communicated through grounding reinforcing steel bars every other roadbed slab; a plurality of roadbed slabs are used as a grounding unit at a certain distance, the grounding units are not communicated with one another, the roadbed slabs in one grounding unit are communicated with one another through connecting terminals, and the connecting terminals are connected with weak current side reserved terminals on the roadbed slabs. The utility model has the advantages that the rail structure height of the urban railway shield tunnel is reduced, the concrete consumption is reduced, the construction procedures are reduced, and the comprehensive grounding method is simplified; and the method has good economical efficiency.

The utility model discloses a permanent underground water drainage plugging anti-seepage structure which comprises a drainage pipe, a drainage pipe, a first sealing plate, a first water stop ring and a water pump. The bottom of the drainage pipe is in sealed connection with the first sealing plate, the drainage pipe is pre-buried in the bottom plate and the permeable layer below the bottom plate, the top surface of the drainage pipe is flush with the top surface of the bottom plate, and the bottom surface of the drainage pipe is flush with the bottom surface of the permeable layer; one end of each drainage pipe is communicated with the drainage pipe, and the drainage pipes are all arranged in the permeable layer, so that the permeable layer is communicated with the drainage pipe through the drainage pipes; the first water stop ring is circumferentially arranged on the outer wall of the drainage pipe in a surrounding mode and located above the drainage pipe, so that the drainage pipe and the bottom plate are connected into a permanent integrated structure in a sealed mode through the first water stop ring, and the water pump is arranged in the drainage pipe. The utility model relates to the technical field of underground engineering, and can solve the problems of long construction time, more working procedures and high cost of a drainage mode in underground structure construction in the prior art.

The utility model discloses a kind of anchor jaw formula open hole lateral drilling whip-lay, it includes the guide inclined surface of being equipped with guide inclined body, guide inclined body is connected with central rod, the lower part of central rod is sequentially connected with the center tube equipped with anchor jaw retraction mechanism and the guide shoe equipped with ball-throwing press mechanism in proper order;Anchor jaw retraction mechanism is mainly composed of anchor jaw and piston, anchor jaw installed in center tube is connected with connecting pin through connecting rod installed in piston, piston and limit ring are installed in the outer sleeve connected with center tube;Ball seat is provided in ball-throwing press mechanism, and the sealed ball is seated on ball seat. The whip-lay in the utility model greatly improves the vertical anchoring force to open hole well wall. In open hole lateral drilling construction, the construction mode of cement plug as vertical support is avoided, and the whip-lay is directly used for lateral drilling, and the construction efficiency of open hole lateral drilling well and multi-lateral drilling well can be greatly improved.

This application discloses a jacking support construction device and method for rapid replacement of bridge bearings, comprising: a jacking support mechanism, a base, a base plate, and a self-locking mechanism; the jacking support mechanism integrates a hydraulic jacking structure and a mechanical support structure, the hydraulic jacking structure being used to jack the box girder, and the mechanical support structure being used to support the box girder; the hydraulic jacking structure includes a hydraulic cylinder and a piston rod fitted inside the cylinder, the cylinder having inlet and outlet ports for connecting to a hydraulic station via hydraulic oil pipes; the self-locking mechanism consists of a hydraulic self-locking component and a mechanical self-locking component, the hydraulic self-locking component being located within the hydraulic jacking structure to lock the inlet and outlet ports, and the mechanical self-locking component being located within the mechanical support structure to lock the mechanical support structure; the jacking support mechanism is mounted on the base plate via the base, the base plate being fixedly placed on the support platform; the base and the base plate are provided with an adjustment mechanism for adjusting the position of the jacking support mechanism. This device eliminates the need to transport and stack support components, reducing construction steps and improving efficiency.

The present application belongs to the field of building construction technology, and relates to a window sill construction method and a prefabricated part for a reconstruction project, comprising an original wall, a plurality of prefabricated blocks and a mortar leveling layer, the original wall and the plurality of prefabricated blocks are provided with the mortar leveling layer, the prefabricated blocks are fixed by high-strength self-leveling grouting, the original wall passes through the plurality of prefabricated blocks through a reinforcing bar connecting piece, and the original wall and the plurality of prefabricated blocks are provided with a waterproof layer outside. The combination scheme of the prefabricated blocks, the reinforcing bar connecting piece and the self-leveling grouting effectively reduces the process of the overall structure construction, improves the construction efficiency, reduces the material waste on the construction site, avoids the generation of a large amount of building material garbage, effectively saves the construction cost, and improves the effect and long-term reliability of the window sill prefabricated reconstruction project.

The invention discloses a high torque mixing drilling rig and a construction method thereof, which belongs to the technical field of pile foundation construction, and includes a pile frame, a chassis, a vertical rotary power system, a circumferential rotary power system, a rotary drive, a rotary pressure plate, a drill rod, a drill bit, a chain, a solidified material pumping system, and a high pressure gas supply system; a stopper is provided on the drill rod; the pile frame and the chassis are connected by bolts, the rotary drive is connected to the pile frame by a slide rail, the rotary pressure plate is connected to the vertical rotary power system by a chain, the rotary pressure plate is connected to the drill rod by a flange, the drill rod is connected to the drill bit by a flange, and the solidified material pumping system and the high pressure gas supply system are connected to the drill rod by a high pressure hose. The invention reduces the center of gravity of the drilling rig by placing the power head downward, prevents the drilling rig from tilting forward during the construction process, and achieves the purpose of drilling, lifting the drill and transmitting torque at the same time by only setting one power head, thereby reducing the construction process, improving the construction efficiency, and saving the cost.

The invention relates to the technical field of tunnel engineering, and provides a construction method of a bealock section large-span multi-arch tunnel entry structure, which comprises the following steps: constructing a first pre-reinforcing pile assembly and a second pre-reinforcing pile assembly, excavating a temporary side slope to construct a middle pilot tunnel, excavating the middle pilot tunnel, and constructing a middle partition wall in the middle pilot tunnel after the middle pilot tunnel is communicated. And backfilling soil and stones to the bottom height of the protective arch, constructing the protective arch located above the left tunnel hole and the right tunnel hole, constructing an open cut tunnel section and an end wall type tunnel portal, backfilling soil at the top of the protective arch to the designed height, and then synchronously constructing the left tunnel hole and the right tunnel hole to the hidden tunnel section. According to the method, synchronous construction of the left main hole and the right main hole of the multi-arch tunnel can be achieved, the construction procedures of the multi-arch tunnel are greatly reduced, safety is high, meanwhile, the side slope is effectively reinforced, the side slope is prevented from collapsing in the excavation process, the design method of the protection arch is further provided, the determined protection arch can meet the structural requirement, and construction convenience can be improved.

The invention discloses mud removing and pile cutting equipment for a waste pile foundation and a construction method of the mud removing and pile cutting equipment. The equipment is composed of a sleeve assembly, a hydraulic pile cutting shearing mechanism and a mud removing reamer assembly. The sleeve assembly comprises a cylindrical inner sleeve; the hydraulic pile cutting and shearing mechanism comprises hydraulic shearing equipment, the bottom of the hydraulic shearing equipment is rotationally connected with a dredging reamer assembly through a rotary support, the dredging reamer assembly comprises a hollow supporting barrel, a spiral reamer is arranged on the outer wall of the dredging reamer assembly, and a plurality of third overflowing holes are formed in the reamer face at intervals. A plurality of form relieved teeth are arranged on the end face of the tail end of the lower side of the spiral reamer, and a serrated knife with a plurality of form relieved teeth is arranged on the outer wall, opposite to the spiral reamer, of the supporting cylinder; according to the equipment and the construction method, the old pile foundation can be cut to the designed elevation position at a time, the cut-off pile and the equipment are integrally hoisted and transferred, the construction procedures are reduced, the equipment loss is reduced, meanwhile, the operation efficiency is improved, and the equipment and the construction method can be widely applied to reconstruction, extension and upgrading reconstruction of old wharfs and land waste structures.

The utility model discloses a novel anti-pulling anchor rod pile structure, which belongs to the technical field of pile foundations and is characterized in that a novel anti-pulling anchor rod pile is divided into an expanded anchoring section and a common anchoring section and penetrates through a central rod body of a pile body, and a sleeve is arranged outside the rod body. The expanded anchoring section is a connecting part of the rod body inserted into the reinforcing steel bar clamping groove disc and the umbrella-shaped reinforcing steel bar mesh A; the common anchoring section is a part where the rod body is inserted into the steel bar clamping groove disc and connected with the umbrella-shaped steel bar mesh B; the reinforcing steel bar clamping groove disc is fixed on the rod body through a nut; the steel plate A is fixed to the pile top through the high-strength nut, and the spring and the steel plate B are sleeved with the top of the rod body. And after the anchor rod pile is put down, the steel wires are adjusted, and the reinforcing mesh A and the reinforcing mesh B fill the expanded anchoring section and the common anchoring section in an umbrella shape. The anchor rod pile is simple in structure, and the pulling resistance of the anchor rod pile is improved by enlarging the pulling resistance of the anchoring section and the friction force between the common anchoring section and the soil body; the durability of the pile body is improved through the sleeve; applying prestress through the steel plate A; foundation steel bars are connected with springs, and the anchoring force of the pile and the foundation is improved.

The invention relates to the technical field of track traffic track bed disease treatment, and discloses an existing line elastic short sleeper monolithic track bed disease treatment method under space-time limited conditions, which comprises the following steps of: performing inclined downward punching operation on track bed surfaces on two sides of an elastic short sleeper to form an included angle less than 90 degrees between a formed hole channel and the elastic short sleeper; a metal pouring needle is embedded in the hole channel; temporarily plugging the contact part of the elastic short sleeper and the ballast bed, and reserving an exhaust hole; a polymer pouring material is poured into gaps among the elastic short sleeper, the rubber sleeve shoe and the ballast bed through the hole channels under the pressure, and when the polymer pouring material overflows from the exhaust holes, the pouring work is completed; and after the polymer pouring material is cured, the pouring hole is blocked, and the temporary blocking material of the elastic short sleeper is removed. According to the method, under the condition that normal operation of a line is not affected, the problems of gap opening, empty hoisting and the like of the elastic short sleeper monolithic track bed can be rapidly and efficiently solved.

The invention relates to a construction method for a non-perforated column-wrapping keel of a concrete column, which comprises the following steps of: bending a galvanized steel sheet in the middle into a 90-degree right angle, bending two end parts into 135-degree angles, enabling the distance between a 90-degree angle folding point and a 135-degree angle folding point at one end to be equal to the width of the front surface of the concrete column, and enabling the distance between the 90-degree angle folding point and the 135-degree angle folding point at the other end to be equal to the width of the side surface of the concrete column; two galvanized steel sheets are combined and then wrapped on the outer surface of the concrete column, and the angle edges of the 135-degree angle are fixed; three galvanized steel plate rings are arranged at the upper midpoint of the concrete column; the galvanized square tubes are welded on the outer surface of the galvanized steel sheet, and two galvanized square tubes are arranged on each surface; longitudinal square tube keels are welded at the end parts of the galvanized square tubes and are parallel to the concrete columns; after the longitudinal square tube keels are welded, the transverse square tube keels are welded according to the width size of the hardcover panel; and after welding construction is completed, anti-rust paint is brushed for rust prevention. According to the construction method, the concrete column is not damaged.

The utility model discloses a BIM-based electromechanical adjustable socket type embedded suspender structure which comprises a transverse carrying plate, an upper suspender and a lower suspender, and an embedded positioning mechanism is arranged at the top of the transverse carrying plate; a positioning disassembly and assembly mechanism is installed on the bottom face of the transverse carrying plate, an upper hanging rod is connected to the interior of the positioning disassembly and assembly mechanism, a lower hanging rod is slidably connected to the bottom end of the upper hanging rod in a sleeved mode, a lifting positioning mechanism is connected between the lower hanging rod and the upper hanging rod, and a wire groove is connected to the inner side of the lower hanging rod in an attached mode. According to the BIM-based electromechanical adjustable socket-and-spigot type embedded suspender structure, through BIM model pipeline positioning and factory centralized machining and manufacturing, welding can be avoided on site, body injuries caused by poisonous and harmful gas and welding sparks generated by welding to construction workers are avoided, especially when the construction workers are located in a limited space operation environment, the fire hazards on the construction site can be effectively prevented, and the construction efficiency is improved. And meanwhile, welding points do not need to be subjected to secondary anti-corrosion and anti-rust treatment on site, and construction procedures are reduced.

The application discloses a mechanical hole-forming method of a horizontal cantilever rectangular anti-slide pile with an added shoulder, and comprises the following steps: sequentially arranging a slag body processing mechanism, a vertical hydraulic assembly and a multifunctional drilling assembly on a drilling machine from top to bottom; controlling a cylindrical drilling assembly in the multifunctional drilling assembly on a horizontal plane to drill and dig a stratum downwards to a top design elevation of the added shoulder hole; controlling a vertical hydraulic cylinder to drive the multifunctional drilling assembly to continue drilling and digging the stratum downwards to a design depth of the horizontal cantilever pile hole; the piston rod of the horizontal hydraulic cylinder is elongated to drive the multifunctional drilling assembly to move laterally, and the piston rod of the vertical hydraulic cylinder is elongated to drive the multifunctional drilling assembly to move downwards to drill and dig the stratum to form the added shoulder hole; controlling the horizontal hydraulic cylinder to drive a cylindrical drilling assembly on a vertical plane in the multifunctional drilling assembly to drill and dig the horizontal cantilever pile hole outwardly; and continuing to control the cylindrical drilling assembly on the horizontal plane in the multifunctional drilling assembly to drill and dig the stratum downwards to a design depth of the rectangular pile hole.

The utility model discloses a concrete structure embedded casing pipe fixing device which comprises a formwork and a positioning pipe capable of coaxially extending into a casing pipe, the end portion of the positioning pipe is connected with a positioning plate located outside the casing pipe, the positioning plate is detachably connected with the formwork, and a sealing piece is arranged between the positioning pipe and the casing pipe. The device can be recycled, is simple and convenient to operate, can ensure safety in all aspects during installation, greatly reduces the construction cost, and saves manpower and material resources. Construction procedures are reduced, working efficiency is improved, labor intensity is reduced, and economy and environmental protection are achieved.

The present invention discloses a device and construction method for saline soil roadbed in seasonal frozen soil areas, belonging to the technical field of roadbed foundation, to solve the problem that saline soil roadbed in seasonal frozen soil areas is susceptible to frost heave, salt heave and dissolution, and the problem that the cushion layer is thick and difficult to compact when the traditional roadbed gravel soil is used as a permeable barrier layer. The device includes an earthwork roadbed, a heat stabilization facility, and a barrier facility. The barrier facility includes a medium-coarse sand lower protective layer, a modified desert sand barrier layer, and a medium-coarse sand upper protective layer arranged in sequence from bottom to top; the heat stabilization facility includes a bottom roadbed stabilization facility and an upper insulation facility. The bottom roadbed stabilization facility includes a lime soil compaction pile and a lime soil cushion layer arranged in sequence from bottom to top. The method includes the construction of a bottom roadbed stabilization facility, a barrier facility, an earthwork roadbed and an upper insulation facility, and a peripheral water-retaining wall. The present invention can maintain the long-term water, heat, and salt stability of the roadbed through the combination of structure and construction method; the cost is low, the construction process is less, and the maintenance is simple.

This application discloses a photovoltaic module mounting bracket, relating to the field of photovoltaic equipment technology. The photovoltaic module mounting bracket includes a bracket body, a load-bearing body, and anchors. The bracket body includes a base plate and a column, with the column connected to the base plate. The base plate has an anchoring plate section surrounding the column. The load-bearing body is connected to the end of the column away from the base plate and is used to connect to a photovoltaic support structure. The anchors are connected to the anchoring plate section and are used to fix the bracket to the building roof. The technical solution provided by this application aims to improve the practicality and structural reliability of the photovoltaic module mounting bracket.

This invention discloses a construction method for deep and large foundation pits without the need for replacement supports, belonging to the field of underground structure sequential construction technology. During the main structure construction, after the previous formwork sidewall is completed, only the next steel support is removed; replacement supports are no longer installed, thus eliminating the need for replacement supports. Only the concrete supports are cut, retaining the lintel beams, which function as part of the sidewall, allowing them to play a role in both the excavation and main structure construction phases. The bottom slab ribs are adjusted from triangular bevels to stepped shapes, allowing the scaffold uprights to act vertically on the ribs, ensuring the overall stability of the scaffold. The increased rib cross-sectional dimensions reduce the impact of lateral deformation of the foundation pit on the sidewalls. This invention shortens the construction process, reduces construction costs, ensures foundation pit safety, and has good economic benefits.

The utility model discloses a concrete beam reinforcing device suitable for rear holing, which relates to the technical field of concrete beam reinforcing equipment, and adopts the technical scheme that the concrete beam reinforcing device comprises a fixed plate I and a fixed plate II which are respectively arranged on two sides of the bottom of a concrete beam, and a sleeve is fixedly arranged on one side, facing the fixed plate II, of the fixed plate I; the sleeve is matched with a hole formed in the concrete beam, external threads are arranged on the outer wall of the sleeve, and the sleeve penetrates to the other end of the hole and is fixedly connected with the second fixing plate through a bolt cap. The utility model has the beneficial effects that the hole is quickly reinforced after the hole is formed, the bearing capacity of the concrete beam is improved, the bending resistance and shear resistance bearing capacity of the concrete beam with the hole formed later are effectively improved on the basis that the original structure is not damaged, the construction procedures are reduced, the construction period is shortened, and the construction cost is saved.

The present application relates to the technical field of building construction, in particular to a medical spliced antibacterial medical board construction method, comprising the following steps: A, wall surface quality acceptance; B, line marking; C, drilling and inserting screw sleeve; D, installing keel; E, installing fastener; F, installing antibacterial medical board; G, sealing glue; The construction method has the advantages of simple construction process, less construction procedure, high quality reliability and the like; The construction speed can be greatly improved by using the construction method, and the construction period is shortened; Further, the antibacterial medical board adopts a "dry hanging" fixing mode, which ensures the safety of the system; Compared with the phenolic resin board construction, the fireproof grade, wear resistance, formaldehyde content, moisture resistance, stain resistance, scratch resistance and other performances are significantly improved, so that the construction process is more environmentally friendly and safe.

The invention discloses a natural stone thermal insulation decorative integrated board based on microcrystalline foamed ceramic and a preparation method thereof, including a natural stone layer, an unsaturated resin adhesive layer and a foamed ceramic layer, wherein the stone layer adopts natural limestone, one side of the stone layer is an unsaturated resin adhesive layer, one side of the unsaturated resin adhesive layer is a foamed ceramic layer, and the foamed ceramic layer components include granite tailings 50-70%, ceramic scraps 10-20%, clay 5-15%, hollow microspheres 5-10%, flux 1-10%, foaming agent 1-10%, stabilizer 0.5-2%, binder 1-3% and water. The present invention adopts a high temperature sintering method to prepare foamed ceramics, which adopts high hardness granite as the main raw material, improves the hardness and compressive strength of foamed ceramics, adds hollow microspheres to improve thermal insulation performance, and simultaneously adopts modified epoxy resin stone AB glue to integrate natural stone with foamed ceramics, and the process of additionally decorating after the external wall is pasted with thermal insulation materials can be reduced, which reduces construction cost and construction difficulty.

The utility model provides a kind of combined retaining structure of micro pile plus anchor rod belongs to foundation pit supporting technical field, including steel pipe pile, further include: rectangular steel pipe, insert in the inside of steel pipe pile, concrete crown beam, fixed in the outside of steel pipe pile top end, prestressed anchor rod is inserted in the inside of concrete crown beam, the side of concrete retaining board close to the top end of foundation pit cushion is equipped with water interception ditch, expansion structure, is set at the bottom of the outside of steel pipe pile, positioning structure, it is set at the outside of steel pipe pile.In the utility model, prestressed anchor rod and steel pipe pile are combined by concrete crown beam, give full play to the vertical supporting effect of steel pipe pile and the horizontal pull together effect of prestressed anchor rod, while crown beam has the double function of connecting steel pipe pile and being anchor block of anchor rod, whereby the function of the device efficient stable support foundation pit is realized, so that supporting structure rigidity is greater, integrity is stronger.

This invention relates to the field of building construction technology, and in particular to a formwork fastening clamp for a zigzag precast concrete roof truss and a construction method based thereon. The formwork fastening clamp includes a first insert, a second insert, a bottom crossbar, and a locking device. The bottom crossbar is connected to the first and second inserts via a socket joint and is locked in place by the locking device. This invention solves the problems existing in the prior art and provides an integrated solution for formwork fastening, sleeper support, hoisting gap reservation, and prevention of concrete adhesion. After the precast beam is demolded, the bottom crossbar can be directly left below the beam to act as a sleeper, and the upper beam can still be directly precast on top of the lower beam. During hoisting, there is a rope gap between the two beams, which effectively avoids concrete adhesion between the upper and lower beams, improving the forming quality and construction efficiency of the zigzag precast concrete roof truss.

The utility model discloses a parapet wall structure which comprises an upper portion and a lower portion, the lower portion is a reverse ridge integrally prefabricated with a floor slab, and the parapet wall structure is characterized in that the upper portion is a prefabricated parapet wall body, a connecting box is installed at the bottom of the parapet wall body, a connecting rod is installed in the reverse ridge, the top of the connecting rod is inserted into the connecting box, and the top of the connecting rod is inserted into the connecting box. And connecting slurry is injected into the connecting box. The connecting rod is a connecting sleeve, a locking nut and a gasket are arranged in the connecting box, and the connecting sleeve penetrates through the gasket to be in threaded connection with the locking nut. The structure has the advantages of being simple in construction procedure, short in construction period, waterproof, anti-cracking and the like.

The utility model discloses a steel structure concrete post-cast strip capable of being continuously constructed, which relates to the technical field of concrete post-cast strips and comprises concrete plates, post-cast strip steel plates are mounted on opposite inner walls of the concrete plates, and two post-cast strip steel plates of two adjacent concrete plates are symmetrically arranged. When the steel post-cast strip is used, the two concrete slabs are connected through the arrangement of the post-cast strip steel plate, the upper U-shaped steel plate, the lower U-shaped steel plate and the polyfluortetraethylene plate, and when the two concrete slabs are connected, rapid-setting grouting materials are poured into the grouting expansion joints through the post-grouting holes and the PVC post-grouting pipes to block the grouting expansion joints, so that a closed and complete steel post-cast strip is formed; at the moment, the waterproof keys prevent leakage, and meanwhile stress generated by concrete hydration heat is evenly transmitted through the shear keys, so that concrete can be directly poured after the steel post-cast strip is installed, waiting time and construction procedures are reduced, and the problem that a large-area concrete post-cast strip is prone to leakage is effectively solved.