33results about How to "Effective force transmission" patented technology

The invention discloses a fabricated prefabricated shear wall and laminated slab node. The fabricated prefabricated shear wall and laminated slab node comprises a prefabricated shear wall and a laminated slab; a grouting sleeve is arranged at a node body of the prefabricated shear wall and the laminated slab, the lower portion of the grouting sleeve is buried in the upper end of the prefabricated shear wall, and the rest part of the grouting sleeve is located in a post-poured concrete laminated layer of the laminated slab; the bottom end of the grouting sleeve is arranged at the top ends of vertical steel bars located in the prefabricated shear wall, the vertical steel bars downwards and outwards extend out of a prefabricated shear wall located on an upper floor, and the vertical steel bars are inserted into the grouting sleeve from the top end of the grouting sleeve; and a slurry discharging pipe and a grouting pipe are arranged on the upper portion and the lower portion of the grouting sleeve correspondingly, and a grouting material is poured into the grouting sleeve from the grouting pipe till the grouting material overflows from the slurry discharging pipe to enable the grouting sleeve to be completely filled with the grouting material. The grouting sleeve is a connecting piece of the upper-layer shear wall and the lower-layer shear wall, and a plastic hinge is formed at the bottom of the grouting sleeve. The prefabricated shear wall and a prefabricated plate form the wall plate node in an engaged mode through mutual connecting and binding among the grouting sleeve, a steel bar net piece and the post-poured concrete, and integrality and shock resistance of the node are improved.

The invention discloses a joint of a fabricated precast shear wall and a laminated slab connected with the fabricated precast shear wall by combined grouting sleeves. The combined grouting sleeves are arranged at the joint. Each combined grouting sleeve comprises a first section sleeve body and a second section sleeve body; the top ends of the first section sleeve bodies are connected with the bottom ends of the second section sleeve bodies; the bottom ends of the first section sleeve bodies are connected on the top ends of vertical steel bars in the precast shear wall and completely pre-buried in the top ends of the precast shear wall, and the second section sleeve bodies are pre-buried in post-poured concrete laminated layers; the vertical steel bars extend downward out of the precast shear wall on the last storey, the vertical steel bars are inserted in the second section sleeve bodies from the top ends of the second section sleeve bodies and extend into the first section sleeve bodies; and mortar discharging pipes are arranged on the upper portions of the second section sleeve bodies, and grouting pipes are arranged on the lower portions of the first section sleeve bodies. The combined grouting sleeves serve as connecting pieces of the shear wall on the upper layer and the shear wall on the lower layer. Shear wall members form plastic hinges at the bottom. The shear wall and the precast slab form the joint through mutual connection and bonding occlusion among the sleeve bodies, steel bar meshes and post-poured concrete, and the integrity and anti-seismic performance of the joint are improved.

The invention discloses a steel sheet pile support construction method for building an underground garage open caisson to reduce the construction complexity and improve the construction efficiency during open caisson building and reduce the building expenditure for the open caisson. According to the construction method, open caisson construction is carried out in an area defined by a steel sheet wall, wherein building of a wall of the open caisson is carried out in a manner of segment-by-segment construction from bottom to top. The building method comprises the steps that steel sheet piles are sunk, and the continuous steel sheet pile wall is formed; a certain of earthwork is excavated in the area defined by the steel sheet pile wall, then, a pile block enclosure purlin is erected on the top of the steel sheet pile wall, and horizontal braces are built on the inner side of the pile block enclosure purlin; and then, open caisson building is finished through a method that earthwork is excavated segment by segment, the wall is poured segment by segment and sinking is carried out.

The invention relates to a vertical connection structure of a prefabricated concrete shear wall and a construction method thereof, and belongs to the technical field of a building structure. The vertical connection structure comprises a prefabricated concrete shear wall, additional steel bars, hole filling cement-based cementing materials and cement concrete post-pouring strips, wherein one row ofstrip-shaped slot holes are reserved at each of the top and the bottom of the prefabricated concrete shear wall; the slot holes are distributed between vertical stress steel bars in the wall; when the prefabricated wall bodies are vertically spliced, the slot holes of the upper and lower layers of wall bodies are aligned and communicated in the splicing seam positions; the through length additional steel bars are put into the slot holes; and the cement-based cementing materials are poured for fixation. The concrete is cast in situ in the horizontal splicing seam positions to form the post-pouring strips. The upper layer prefabricated concrete shear wall and the lower layer prefabricated concrete shear wall are firmly connected in the vertical direction through the additional steel bars, the hole filling cement-based cementing materials and the concrete post-pouring strips; and the force is reliably transferred. The vertical connection structure of the prefabricated concrete shear wallhas the advantages that the connection performance is identical to that of the existing grouting sleeve connection structure; the integrality and the safety of the structure are effectively ensured;the stress mechanism is clear; the construction is convenient; and economic performance and practicability are realized.

The invention discloses a two-wall hollow fabricated root-type open caisson foundation. The two-wall hollow fabricated root-type open caisson foundation is composed of a shaft, root keys and a back cover, the shaft is of an annular tubular structure with two hollow walls, and is composed of a shaft inner wall, a rib wall and an outer wall in the radial direction, and a formed cavity between the well walls communicates vertically so that mud sucking equipment can be lowered and moved in the cavity between the well walls; bottom feet of the shaft are blade feet, and root keys are arranged on thepositions, penetrating through the shaft inner wall, the rib wall and the outer wall and protruding and extending from the outer wall, of the shaft; the shaft is formed by connection of a bottom segment and a plurality of standard segments in the vertical direction, the bottom segment is in a blade shape, and the blade feet are formed; and for the shaft which is completely jointed and sunk in place, the root keys are arranged in the shaft, and then the bottom of the shaft is poured to form the back cover. According to the two-wall hollow fabricated root-type open caisson foundation, main components are connected by prefabricated components correspondingly, the structure is simple, fast and accurate sinking of an open caisson can be realized, the construction difficulty is effectively lowered, the operational safety factor is improved, industrial mass production is facilitated, and economic benefits are obvious.

The invention discloses an orthotropic deck plate bolt welding joint and an external wide splice plate. The external wide splice plate comprises inside splice plates and outside splice plates, whereinthe inside splice plates are fixed onto the inner side of a U rib web plate, the outside splice plates are fixed onto the outer side of the U rib web plate, and the U rib web plate is provided with afirst side, a flat plate and a second side. The inside splice plates are fixedly arranged on the inner side of the first side and the inner side of the second side, the outside splice plates are fixedly arranged on the outer side of the first side and the outer side of the second side, the upper edges, the front end faces and the rear end faces of the inside splice plates are flush with those ofthe outside splice plates, and the lower edges of the outside splice plates are not lower than those of the flat plate of the U rib web plate. The wheel load stress of the lower edges of the splice plates is reduced, and the anti-fatigue performance of the structure detail of the bolt welding joint is improved.

The loom dobby (1) consists of oscillating levers linked kinematically to a heddle frame, each lever being equipped with a balance arm (7) with hooks (8) and actuated by pushers (15) supported by drivers (16). Each driver is pivoted by an arm (20) connected to a crank (22) on the end of a shaft (23) that rotates about a fixed geometrical axis (B-B') in relation to the heddle frame and is equipped with a torque receiver (25). The latter is in the form of a gear meshing with a second gear (26) on the output shaft (27) of a modulator (28) for the rotary motion. The two gears have conical teeth and their shafts are basically orthogonal to one another.

The invention provides a node with a buckling-restrained braced connecting plate penetrating through a beam column. The node with the buckling-restrained braced connecting plate penetrating through the beam column comprises a steel column shaped like a Chinese character "ri", a steel column interior stiffening structure, a buckling-restrained braced connecting structure and a box girder. The steelcolumn interior stiffening structure is embedded inside the steel column shaped like the Chinese character "ri" and arranged perpendicular to the steel column shaped like the Chinese character "ri".The buckling-restrained braced connecting structure comprises a connecting plate and an outer connection plate which are arranged in an integrally connected manner. One end of the connecting plate penetrates through the steel column shaped like the Chinese character "ri" and is connected with the steel column interior stiffening structure in a clamped and fixed manner and is in contact with the inner side wall of the steel column shaped like the Chinese character "ri". The other end of the connecting plate is arranged in a manner that the other end of the connecting plate is outward-bulging onthe outer wall of the steel column shaped like the Chinese character "ri". The outer connection plate is arranged in an outward-extending manner along the end face of the side, away from the steel column shaped like the Chinese character "ri", of the connecting plate. The outer connection plate and the connecting plate are connected side by side. The box girder penetrates through the outer connection plate and is arranged perpendicular to the connecting plate. One end of the box girder is connected with the outer wall of the steel column shaped like the Chinese character "ri". The invention further provides a manufacturing method for the node with the buckling-restrained braced connecting plate penetrating through the beam column. The node with the buckling-restrained braced connecting plate penetrating through the beam column is simple in design and structure, easy to operate and high in universality; and force transferring is simpler.

The invention discloses a prefabricated assembled hollow pier based on UHPC joints and a construction method of the pier, the prefabricated assembled hollow pier comprises a pier column and a base, the pier column is a hollow pier column, the pier column is sequentially composed of a pier bottom section, a middle section and a top cap section from bottom to top, the pier bottom section is located at the top of the base, steel bar connectors are embedded between the pier bottom section and the base, between the pier bottom section and the middle section and between the middle section and the top cap section, reinforcing stirrups are arranged outside the steel bar connectors, and connection is achieved through post-pouring of UHPC joints. According to the invention, the steel bar connectors between the sections are easy to position and connect, the height of the joints is remarkably reduced, and the using amount of joint concrete is small; the segment construction tolerance is large, and the precision requirement is low; joints are free of vibration, self-compaction is achieved, pouring is convenient, and construction is simple; and the assembled pier is excellent in overall performance, high in joint durability, rapid to assemble, short in field operation time and high in efficiency.

The invention discloses a drum-shaped combined steel box joint, an arch frame joint structure and a construction method thereof, which can realize multi-angle intersection welding connection among a steel framework, an arch rib and an arch bottom pull rod of a support cylinder. A first inner partition and a second inner partition are arranged, so that the stress transmission effectiveness of the arch rib is guaranteed; a third inner partition, a fourth inner partition and a fifth inner partition are arranged, so that the stress transmission effectiveness of upper and down vertical steel ribs is guaranteed; three horizontal steel ribs and an inclined steel rib of the support cylinder can directly transmit stress through a joint box, so that the connecting quality among the steel framework, the arch rib and the arch bottom pull rod is guaranteed; in addition, a plurality of pouring communication holes are formed, so that the compactness of steel box concrete in an inner cavity of the joint box is guaranteed; and in addition, the arch effect of the drum-shaped combined steel box joint is utilized, so that the prestressing force of an external prestressed cable can be directly transmitted to the drum-shaped combined steel box joint.

The invention relates to a relay (100), comprising an armature (101) and a yoke (103) which can be electromagnetically coupled to the armature (101). The armature (101) lies flat at least partly on the yoke (103), and a receiving depression (105) is partly formed in the armature (101). The relay also comprises a bracket-shaped clamping spring (107) which surrounds the armature (101) and the yoke (103) on the end face in order to fix the armature (101) on the yoke (103). The bracket-shaped clamping spring (107) has a first clamping limb (109-1), which is arranged in the receiving depression (105), and a second clamping limb (109-2), which lies on the yoke (103). The first clamping limb (109-1) has an angled tab (111) which engages elastically into a recess (113) formed in the receiving depression (105) of the armature (101).

The invention provides a vertical partition plate beam and column connection joint applicable to a composite steel plate shear wall end column and a construction method for applying the vertical partition plate beam and column connection joint. The vertical partition plate beam and column connection joint applicable to the composite steel plate shear wall end column comprises the composite steel plate shear wall end column, a vertical partition plate, a beam and column connection plate and a steel beam. The vertical partition plate is vertically arranged in the opposite insides of the composite steel plate shear wall end column, the composite steel plate shear wall end column comprises a thick plate column wall, the thick plate column wall is arranged on a side of the composite steel plateshear wall end column, and the beam and column connection plate is connected with the steel beam and the thick plate column wall. The vertical partition plate beam and column connection joint applicable to the composite steel plate shear wall end column and the construction method have the advantages that the vertical partition plate beam and column connection joint in a connection mode is provided with the vertical partition plate, accordingly, the steel beam can be effectively connected with a composite steel plate shear wall, and requirements of pouring concrete construction methods can bemet.

The invention relates to a foundation pit supporting system based on splayed I-shaped steel and a construction method thereof. The system comprises an inner support horizontally arranged in a foundation pit, wherein the inner support comprises two sections, namely a splayed I-shaped steel support and a steel pipe support; the splayed I-shaped steel support comprises a diagonal support and diagonal braces symmetrically arranged on two sides of the diagonal support; one end of each diagonal brace is fixed to a surrounding purlin or a crown beam in the foundation pit, and the other end of each diagonal brace is fixed to the side face of the diagonal support; one end of the diagonal support is fixed to the surrounding purlin or the crown beam in the foundation pit, and the other end of the diagonal support is connected with the steel pipe support; and the other end of the steel pipe support is fixed to the surrounding purlin or the crown beam in the foundation pit through a movable head. The novel inner support with one or two ends made of the splayed I-shaped steel is designed, so that the action range of each steel support is widened, the number of the inner supports is reduced, the cost is reduced, and the construction period is shortened; and meanwhile, the operation space in the foundation pit can be enlarged, more abundant operation conditions are reserved for large machinery, the earthwork outward transport and material feeding and discharging efficiency is improved, and a more efficient and economical foundation pit steel support system is realized.

The invention discloses an interlayer cleaner for a double-layer box body, and discloses a cleaning brush device which can be used in cooperation with an existing steel wire ball and can clean the twosides of a box body crack at the same time through a push pipe wrapping the steel wire ball. The interlayer cleaner for the double-layer box body is characterized in that one end of the push pipe issleeved with a front pressing cover, wherein the diameter of the front pressing cover is gradually increased from top to bottom; the bottom edge of the front pressing cover is bent towards the outer side in the horizontal direction; a plurality of clamping teeth are arranged on the inner wall of the top of the front pressing cover; a lower fastening nut is arranged at one end of the push pipe in ascrewed mode and positioned in the front pressing cover; a push plate is arranged at the other end of the push pipe; a plurality of rib plates are arranged on the outer wall of the push pipe at equalangles and positioned between the front pressing cover and the push plate; the two ends of each rib plate are connected with the front pressing cover and the push plate respectively; a distance is reserved between every two adjacent rib plates; each rib plate is divided into an upper section and a lower section; the width of the upper section of each rib plate is larger than that of the lower section of each rib plate; and the joint of the upper section and the lower section of each rib plate is in slope transition.