15results about How to "Reduce wet work" patented technology

The utility model relates to the technical field of building materials, in particular to an assembly type PC wallboard structure which comprises two butt-joint openings symmetrically formed in the bottom end of a wallboard body, two clamping plates are symmetrically arranged in the butt-joint openings, sliding columns in sliding connection with the wallboard body are fixedly connected to the side walls of the two clamping plates, and the side walls of the two clamping plates are fixedly connected with the bottom end of the wallboard body. The top of the wallboard body is symmetrically and fixedly connected with one ends of two connecting columns. According to the wall board, the two T-shaped blocks on the top of the wall board body are inserted into the grooves in the bottom end of the other wall board body, when the T-shaped blocks abut against the inclined plane portions of the clamping plates in a sliding mode, the clamping plates can abut against the two sides by a certain distance, and then the clamping plates are rapidly reset under extrusion of the reset springs; the T-shaped block can be clamped and positioned through the two clamping plates, so that the T-shaped block can be limited through the butt joint opening in the bottom end of the wallboard body and the cover plate, the PC wallboard can be quickly assembled, and the assembling efficiency of the PC wallboard is improved.

This invention provides a prefabricated concrete frame integrated modular housing structure and its construction method, relating to the field of building construction technology. It includes at least one floor housing structure; the at least one floor housing structure comprises multiple modular units that are spliced ​​together and prefabricated as a single unit. Each modular unit includes at least one of the following: a prefabricated edge beam, a floor slab assembly, and a structural column. In at least one pair of modular units: the adjacent corners of the two modular units together form a splicing area, and the splicing area has only one structural column. The structural column is prefabricated within any one modular unit and connects to the beam end of a prefabricated edge beam or a floor slab assembly within the other modular unit. This modular housing structure significantly reduces on-site wet work and manual binding work, while fundamentally solving the problem that narrow gaps between columns make it difficult to achieve connections, whether hinged or rigid, thus improving the seismic toughness and structural safety of modular buildings.

The invention relates to a building special-shaped imitation brick facing outer wall structure and a construction method, and the structure comprises a rear embedded part which is fixed on a civil engineering main body structure through an anchor bolt; the main keels comprise a plurality of vertical main keels and transverse main keels which are vertically arranged in space, and the vertical main keels and the transverse main keels are welded to the rear embedded part to form a preliminary contour positioning structure meeting the building requirement; the secondary keel is welded on the primary contour positioning structure to form a primary contour structure; the fiber board is fixed and covers the preliminary contour structure to form a quasi contour structure; the imitated red bricks are pasted on the surface of the quasi-contour structure to form an outer wall structure. Wet operation is reduced, the construction precision and quality are improved, the structural stability is enhanced, meanwhile, the lightweight characteristic is achieved, on the basis that the weight of a building is reduced, the overall energy consumption is reduced, various sizes, shapes, colors and textures can be molded, the building is clear and natural, and rich and diversified building styles can be achieved.

The invention discloses a beam end reinforced prefabricated section steel part coated concrete beam-column node, which comprises a section steel part coated concrete column and a section steel part coated concrete beam, and is characterized by further comprising a connecting short beam, two column horizontal stiffening ribs are welded between column flanges, the column horizontal stiffening ribs are parallel to the beam flanges, and the connecting short beam is connected with the section steel part coated concrete column. A plurality of column vertical stiffening ribs are welded between the column horizontal stiffening ribs, a beam end stiffening plate is welded to the side, close to the short beam flange, of the inner side of the beam flange, one side of the short beam flange is welded to the beam flange and the beam end stiffening plate, and the corresponding side of the short beam web is fixedly connected with the beam web through a connecting steel plate. The other side of the short beam flange and the other side of the short beam web in the strong axis direction are welded to the column flange, the other side of the short beam flange in the weak axis direction is welded to the column horizontal stiffening rib, and the other side of the short beam web is welded to the column web. The method has the advantages of capability of improving the shear capacity of a column core area, few on-site connection procedures, simplicity in construction, short construction period and convenience in transportation.

The utility model provides a kind of exempt from formwork piece prefabricated comprehensive pipe gallery structure, including along longitudinal piece prefabricated side wall, middle wall, roof and bottom plate;The side wall top is equipped with cantilevered plate integrally formed with one, and the cantilevered plate is used to rest roof and as the template of wet connecting node;The side wall and roof, the side wall and bottom plate are connected by steel bar lap joint and post-poured concrete to form wet connecting structure;The middle wall and roof are connected by high-strength bolt to form dry connecting structure;The middle wall and bottom plate are connected by mortise and tenon structure to form dry connecting structure;The longitudinal end of the side wall, roof and bottom plate is equipped with the connecting box of built-in steel wire rope ring, and the corresponding steel wire rope ring of adjacent pipe gallery section is connected by pin shaft steel bar and forms longitudinal connecting structure by pouring concrete.The utility model has good economy, and multiple segments can also be parallel advanced during construction, and efficiency is stable.

The utility model discloses an assembly type corridor structure which comprises two beam bodies which are arranged in parallel in a spaced mode and a prefabricated plate body which is connected to the two beam bodies in a crossing and lap joint mode and further comprises positioning ribs, a plurality of supporting columns and a plurality of supporting columns, wherein the positioning ribs are movably arranged at the upper ends of the beam bodies; the connecting holes are formed in the prefabricated slab body and correspond to the positioning ribs, hooking parts are arranged in the connecting holes, grooves are formed in the hooking parts, the positioning ribs are inserted into the connecting holes, and the upper ends of the positioning ribs are bent and embedded into the grooves; the connecting holes are used for filling slurry; and the tensioning assembly is arranged in the beam body and used for tensioning the positioning rib downwards. When the precast slab body is erected on the beam body, the positioning rib is inserted into the connecting hole, the bent part at the upper end of the positioning rib corresponds to the upper part of the hooking part, and the positioning rib is embedded into the groove under the action of the tensioning assembly, so that the beam body and the precast slab body can be preliminarily fixed, then slurry is poured into the connecting hole, and when the slurry is not solidified, the beam body and the precast slab body are fixed. The preliminary fixation of the positioning ribs and the connecting holes can prevent the connection defect caused by the accidental deviation of the prefabricated slab body.

The utility model relates to a narrow slit construction system applied to bridge deck slab connection, which comprises a first bridge deck slab and a second bridge deck slab, a pouring groove used for filling concrete in the later period is arranged between the first bridge deck slab and the second bridge deck slab, a plurality of first reinforcing steel bars provided with threads are arranged on the connecting face of the first bridge deck slab, and a plurality of second reinforcing steel bars are arranged on the connecting face of the second bridge deck slab. A plurality of second reinforcing steel bars with threads are arranged on the connecting face of the second bridge deck slab, and the first reinforcing steel bars are in threaded connection with the second reinforcing steel bars through sleeves. According to the scheme, the two bridge deck slabs are connected together through a mechanical structure, and the effects that the site concrete pouring amount is reduced, and cracks caused by concrete shrinkage are avoided are achieved; the effects of reducing the proportion of wet operation in a bridge construction project and improving the safety of a bridge structure are also achieved; in addition, sleeve mechanical connection is adopted, field welding operation is avoided, material loss is reduced, and carbon emission is reduced.

This invention discloses a composite steel frame connection structure and method for a flat beam-wall panel-column structure. In the column-column and beam-column composite connection system, the steel columns and flat beams are made of hot-rolled steel and can be prefabricated in the factory. After being transported to the site, they are connected using composite connectors and high-strength bolts. The beam-slab composite connection system tightly connects the prefabricated floor slab and flat beams through embedded parts in the steel beams, pre-reinforced steel bars in the floor slabs, threaded shear fasteners, and a portion of cast-in-place concrete, enabling both to share loads and deform collaboratively. The modular walls of the composite wall composite connection system consist of expanded clay concrete filling material and a wall skeleton, connected to the flat beams and multifunctional embedded parts on the steel columns. Adjacent composite walls are connected by mortise and tenon joints on cold-formed thin-walled steel units at both ends. This invention meets the overall load-bearing, energy-saving, and seismic resistance requirements of modern prefabricated building systems, significantly improving construction efficiency and ensuring construction quality.

The utility model relates to the field of precast concrete, and discloses an assembly type concrete member which comprises a concrete assembly, a connecting part and a fixing part, the fixing part comprises an embedded plate with a U-shaped section, a clamping plate and a connecting rib, the embedded plate is embedded into one side wall of the concrete assembly, and the connecting rib penetrates through the embedded plate to enter the concrete assembly. The ends of the connecting ribs are exposed and fixed to the clamping plates, and the two sides of the fixing part can be connected with the two clamping plates in a clamped mode respectively. The concrete member is convenient to assemble and stable in connection.

The invention relates to a pouring-free PEC column vertical connecting structure which comprises an upper PEC column and a lower PEC column, a tenon and a first plug-in unit are arranged on the butt joint face of the upper PEC column, a groove and a second plug-in unit are arranged on the butt joint face of the lower PEC column, a connecting steel plate is further embedded in the outer surface of concrete of the lower PEC column, and when the upper PEC column and the lower PEC column are in vertical butt joint, the tenon and the first plug-in unit are connected in a staggered mode. The tenon is embedded into the groove for positioning, the position is fixed through opposite insertion of the first opposite insertion piece and the second opposite insertion piece, the step of additionally arranging a temporary fixing and supporting structure is omitted, the concrete surfaces of the upper PEC column and the lower PEC column are connected together through the connecting steel plate and bolts, vertical continuity of pre-cast concrete of the upper PEC column and the lower PEC column is achieved, and the construction efficiency is improved. And the force transmission effect is ensured to be better, concrete pouring at the connecting position on site is also omitted, the assembly efficiency is improved, labor and materials are saved, and the cost is reduced.

The invention discloses a construction method suitable for an ultrathin steel skeleton partition wall, which comprises the following steps: manufacturing cold bending moment pipes, and manufacturing partition wall skeleton units by adopting the cold bending moment pipes; the partition wall framework units are sequentially arranged and spliced to form a partition wall framework; a plurality of vertical steel bars are fixedly arranged in the partition wall framework to form a stress framework; the formworks are detachably installed on the two sides of the stress framework, and a closed pouring cavity is formed between the formworks and the stress framework; fine aggregate concrete is poured into the pouring cavity to form a partition wall main body; the partition wall framework is formed by splicing the cold bending moment pipes, and the vertical reinforcing steel bar structure is additionally arranged in the partition wall framework, so that the problems that the wall body is large in thickness, the framework is insufficient in rigidity and concrete is prone to hollowing and cracking can be solved, ultrathin forming of the partition wall is achieved, and the partition wall is combined with steel and concrete to bear force; the comprehensive performance such as strength, sound insulation and fire prevention of the wall body can be improved, formwork erecting and pouring procedures are simplified, and on the basis of guaranteeing the quality and use safety of the wall body, the construction efficiency is improved, and the comprehensive cost is reduced.

The present invention provides a steel bar connection structure with an anchor plate, which includes a first concrete unit, a second concrete unit, a first connecting steel bar and a second connecting steel bar; the outer end of the first connecting steel bar is fixedly provided with a first anchor plate; the outer end of the second connecting steel bar is fixedly provided with a second anchor plate; the first concrete unit and the second concrete unit are butt-jointed, the first connecting steel bar and the second connecting steel bar are indirectly overlapped, concrete is poured between the first concrete unit and the second concrete unit to form a cast-in-place concrete unit; it also includes a first buckle plate for connecting two adjacent first connecting steel bars and second connecting steel bars; the first buckle plate includes a connecting hole and a wedge-shaped connecting groove; the center line of the wedge-shaped connecting groove is in the form of an involute that gradually increases with the center radius of the connecting hole. The present invention greatly improves the shear resistance and tensile resistance between the two concrete units, and is easy to implement and promote, simple to operate, and highly efficient.

The present invention discloses a sectional single-tread staircase, comprising an upper staircase, a lower staircase and a ladder beam for connecting and supporting the upper staircase and the lower staircase, wherein the upper staircase and the lower staircase both comprise a ladder plate and a plurality of steps arranged on the pedal, wherein the ladder plate comprises a first connecting portion at the upper end and a second connecting portion at the lower end, wherein a horizontally arranged supporting surface is provided on the ladder beam, wherein the second connecting portion of the upper staircase and the first connecting portion of the lower staircase are both supported on the supporting surface and butted against each other, and wherein a positioning mechanism for preventing the first connecting portion of the lower staircase from moving along the supporting surface is provided on the ladder beam. The present invention adopts horizontal segmentation, has good installation stability, is convenient for transportation and installation, reduces on-site construction risks, and improves construction efficiency.

The utility model discloses a prefabricated floor slab connecting piece, belongs to the technical field of building connection, and aims to solve the technical problem that in the prior art, wet connection or dry connection is independently adopted between prefabricated floor slabs, so that construction is inconvenient or the connection strength is limited. The prefabricated floor slab connecting piece comprises a connecting bottom supporting plate and an anti-falling piece. The connecting ends of the two prefabricated floor slab bodies are placed on the two sides of the top of the connecting bottom supporting plate, the reserved steel bars of the connecting ends of the prefabricated floor slab bodies face the side of the middle of the connecting bottom supporting plate, and concrete is poured between the two prefabricated floor slab bodies for wet connection. According to the prefabricated floor slab connecting piece, wet-type connection and dry-type connection are combined, the two prefabricated floor slab main bodies preliminarily form a whole through concrete pouring in the wet-type connection, the connecting bottom supporting plates and the prefabricated floor slab main bodies are tightly connected and fixed through the anti-disengaging pieces in the dry-type connection, and the connecting strength and rigidity between the prefabricated floor slab main bodies are greatly improved; and the requirements of high-rise buildings or large-span buildings on structural performance can be met.

The utility model discloses a light steel joist fast-assembly wall system, which is used for fast installation and construction of light steel joist partition wall boards, and comprises a stand column and a cross beam, each stand column comprises a stand column male material, a stand column female material and a connecting keel, the stand column male materials and the stand column female materials are connected in a clamped mode to form the stand columns, the stand column female materials and the stand column male materials can be connected with the cross beams in an inserted mode, and the connecting keels are detachably arranged on the stand column female materials and located between the adjacent cross beams. Two ends of the cross beam are respectively inserted between the adjacent stand columns, and the side wall of the cross beam can be hung with a partition board. According to the light steel joist fast-assembly wall system, through the modularized stand column male materials and the stand column female materials, the light steel joist fast-assembly wall system is more convenient for a user to transport, positioning in the construction process is omitted, and the construction efficiency is improved. In addition, due to the structural arrangement that the cross beams are connected with the stand columns in an inserted mode, the connecting mode through corner connectors is further omitted when the system is installed and constructed, and the installation efficiency is improved.