16results about How to "The structural force is clear" patented technology

The invention relates to the technical field of bridge construction, and provides a construction method of a cable-stayed-continuous cooperative system composite beam bridge, which does not need to arrange a large batch of prestressed corrugated pipes and steel beams to ensure the use performance of a bridge deck slab, fully utilizes the structural characteristics of the cable-stayed-continuous cooperative system composite beam bridge, and improves the construction efficiency of the cable-stayed-continuous cooperative system composite beam bridge. By changing the overlapping sequence of the continuous composite beam bridge deck slabs, it is guaranteed that the bridge deck slabs in the hogging moment area of the continuous composite beam do not generate tensile stress, the bridge deck slabs in the sagging moment area generate pressure stress reserve, and by increasing the tension stay cable force, the continuous composite beam moves upwards close to a side main beam of the cable-stayed bridge and moves downwards close to a side span side main beam; the bridge deck slab generates compressive stress, the steel main beam generates tensile stress, the compressive property of concrete materials and the tensile property of steel are fully played, the material utilization rate is increased, the compressive pre-stress of the bridge deck slab is completed through internal force distribution of the composite beam, the construction method is simple and operable, the structural stress is clear, and the reasonability and safety of the structural stress are guaranteed.

The application discloses a dismantling and transporting integrated device and method for a main arch of an existing highway arch-shaped overbridge, and belongs to the technical field of bridge engineering construction. The dismantling and transporting integrated device comprises top-layer steel pipe supports, the top-layer steel pipe supports are two in number, the lower end of the top-layer steel pipe supports is connected with middle-layer steel pipe supports, one end of the middle-layer steel pipe supports, which is far away from the top-layer steel pipe supports, is connected with bottom-layer steel pipe supports, one end of the bottom-layer steel pipe supports, which is far away from the middle-layer steel pipe supports, is connected with a leveling steel plate, a self-propelled hydraulic module vehicle group is installed at the lower end of the leveling steel plate, the self-propelled hydraulic module vehicle group comprises a plurality of self-propelled hydraulic module vehicles, and a plurality of hydraulic winches are connected to one end of the top-layer steel pipe supports, which is far away from the middle-layer steel pipe supports. The whole device has simple structure, is convenient to process materials and assemble equipment, is high in reliability, strong in economy, and can be repeatedly used in similar arch-shaped overbridge dismantling projects of existing highways, and solves the problem that the traditional bridge dismantling mode cannot be used for batch flow construction.

The utility model discloses a capping beam sealing end construction hanging basket which comprises a hanging basket body arranged on the capping beam sealing end side, the hanging basket body is fixedly connected with a capping beam sealing end through a hanging frame, the hanging frame penetrates into the capping beam sealing end and is anchored to the capping beam sealing end, and the hanging basket body is fixedly connected with the hanging frame. The device is simple in structure, easy and convenient to install, good in operation space, low in cost and capable of being recycled, the hanging basket is positioned and installed through the hanging bracket, the device has enough strength, rigidity and stability, the structure is simple and reasonable, structural stress is clear, installation and detachment are convenient and fast, use is safe and reliable, and meanwhile the requirements for standardization, serialization, universalization and safety are met.

The utility model discloses a four point of prefabricated concrete block's even load hoisting structure, including a plurality of groups fixed setting on the hoisting ring of prefabricated concrete component, every group hoisting ring at least includes two, and the inside of every group hoisting ring is provided with a rigid link, and the rigid link passes through all hoisting rings of this group, and the middle part of rigid link is fixedly connected with one end of steel wire rope, and the other end of a plurality of steel wire ropes is concentrated in hoisting equipment lifting point. Both ends of rigid link are fixedly provided with end anti -slip device. Through the even load design of " multiple hoisting ring + rigid link", effectively disperses the concentrated load, and the safe lifting weight of single lifting point is doubled, and successfully breaks through the technical bottleneck of the hoisting of hundred tons class concrete component. The rigid link ensures that a plurality of hoisting rings are uniformly and synchronously stressed, and the end anti -slip device completely eliminates the risk of rod disengagement, and the structure is stressed explicitly, and the safety redundancy is high.

The utility model provides an external prestressing reinforcing device for a simply supported beam of a railway, which comprises anchoring devices, a steering device and a prestressing tendon, and the anchoring devices are respectively arranged at two ends of the simply supported beam of the railway; the steering device is connected with the railway simply supported beam and located in the area between the two ends of the railway simply supported beam. The two ends of the prestressing tendon are connected with the anchoring devices respectively and arranged in the steering device in a penetrating mode. By the adoption of the external prestress reinforcing device for the railway simply-supported beam, the bearing capacity of the railway simply-supported beam can be remarkably improved, the bending resistance and the shearing resistance of the railway simply-supported beam can be improved, the external prestress reinforcing device is particularly suitable for a large-span bridge, and in addition, the external prestress reinforcing device for the railway simply-supported beam can be used for reinforcing the external prestress of the railway simply-supported beam. And the damage to the concrete during on-site construction can be reduced.

The present invention discloses an assembled node in which the strong and weak axes of an I-beam and a column are connected in an integrated manner. The first I-beam faces the flange of the I-beam, the second I-beam faces the web of the I-beam, the upper side of a weak-axis node plate is buckled and fixed to one end of the second I-beam, the lower side of the weak-axis node plate is fixed to the web of the second I-beam, the column flange node plate is buckled and fixed to the flange of the I-beam, the upper side of a strong-axis node plate is buckled and fixed to the flange of the first I-beam, the lower side of the strong-axis node plate is fixed to the web of the first I-beam, the end of the strong-axis node plate is fixed to one side of the column flange node plate, and the upper end of the weak-axis node plate is fixed to the other side of the column flange node plate. The node can realize an integrated connection between the strong axis and the weak axis.

The invention discloses a foundation pit supporting passive area soil body reinforcing structure and a construction method thereof. The structure comprises fender posts arranged along the periphery of a foundation pit; the cement soil reinforcement area is located in the passive area soil body behind the fender posts, and the cement soil reinforcement area is formed by meshing a plurality of cement mixing piles; the high-pressure jet grouting pile reinforcing band is arranged between the fender post and the cement soil reinforcing area, and the high-pressure jet grouting pile reinforcing band fills a gap between the fender post and the cement soil reinforcing area, so that the fender post, the high-pressure jet grouting pile reinforcing band and the cement soil reinforcing area are in close contact, and a continuous force transmission system is formed. The gaps between the fender posts and the cement mixing piles are filled with the high-pressure jet grouting piles, force transmission is smooth, the passive area soil reinforcement effect is greatly improved, fender post deformation is effectively controlled, and the safety and stability of a foundation pit are guaranteed.

The self-resetting assembly type buckling-restrained brace comprises an inner cylinder, a left plate is arranged at the left end of the inner cylinder, a pushing rod is arranged in the right end of the inner cylinder in a stringing mode, the other end of the pushing rod is sleeved with a right plate, a pushing plate is further arranged on the side, away from the pushing rod, of the right plate, and four SMA pull rods penetrating from the left end to the right end of the inner cylinder are further arranged on the inner cylinder; a right end plate is further fixed to the right side of the push plate, a cushion plate and a left end plate are further sequentially arranged at the left end of the inner cylinder, inner cores are further symmetrically placed on the front side face and the rear side face of the inner cylinder, the right ends of the inner cores are fixed to the right end plate, and the left ends of the inner cores penetrate through the cushion plate to be fixed to the left end plate. The buckling-restrained brace solves the problem that in the prior art, a buckling-restrained brace is prone to generating large residual deformation after an earthquake, and consequently the structure and components cannot continue to play a role.

This invention provides a support structure for erecting large-span truss steel beams, comprising steel pipe piles, transverse connecting components, and longitudinal connecting components. Four steel pipe piles are evenly arranged in a rectangular pattern. Two longitudinal steel pipe piles are connected by longitudinal connecting components, and two transverse steel pipe piles are connected by transverse connecting components. Each longitudinal connecting component includes an upper longitudinal truss and a lower longitudinal truss, connected by diagonal braces. Two diagonal braces are arranged at the left and right ends of the longitudinal connecting component, forming a figure-eight shape. Each transverse connecting component includes an upper transverse truss and a lower transverse truss, with the upper transverse truss corresponding to the upper longitudinal truss and the lower transverse truss corresponding to the lower longitudinal truss. This invention provides a support structure for erecting large-span truss steel beams, which has the advantages of simple structure, easy construction, light weight, good applicability, and high structural stability.

The present invention relates to the technical field of bridge engineering, and discloses a damping vibration reduction device for controlling vortex-induced vibration of a main beam of a large-span bridge, comprising a rigid arm, which is arranged on a bridge pier in the transverse direction of the bridge, and one end of which is hinged to the bridge pier; a viscous damper, one end of which is hinged to the bridge pier, and the other end of which is hinged to the rigid arm, and the viscous damper and the rigid arm are not colinear; a connecting device, which is arranged between the bridge main beam and the rigid arm, and connects the bridge main beam and the rigid arm. The present invention has the following advantages and effects: First, the present application controls the vortex-induced vibration of the main beam by setting an amplifying structure formed by a viscous damper and a rigid arm; second, the present application adopts an amplifying device formed by a combination of a connecting device, a rigid arm and a viscous damper to adapt to a wide spectrum of vibration frequencies, so that the present device is applicable to a wide range of bridges, a large span, reliable displacement transmission and clear structural force, and can control multi-order vortex-induced vibrations of the main beam at the same time.

The invention provides a large-span truss structure steel beam erecting support. The large-span truss structure steel beam erecting support comprises steel pipe piles, transverse connecting assemblies and longitudinal connecting assemblies. The four steel pipe piles are evenly arranged in a rectangular shape, every two longitudinal steel pipe piles are connected through a longitudinal connecting assembly, and every two transverse steel pipe piles are connected through a transverse connecting assembly. The longitudinal connecting assembly comprises an upper longitudinal truss and a lower longitudinal truss, the upper longitudinal truss and the lower longitudinal truss are connected through diagonal bars, the two diagonal bars are arranged corresponding to the left end and the right end of the longitudinal connecting assembly, and the two diagonal bars are arranged in a splayed structure; the transverse connecting assembly comprises an upper transverse truss and a lower transverse truss, the upper transverse truss corresponds to the upper longitudinal truss, and the lower transverse truss corresponds to the lower longitudinal truss. The large-span truss structure steel beam erecting support has the advantages of being simple in structure, easy to construct, light in weight, good in applicability and high in structural stability.

The present invention relates to the technical field of bridge construction, and provides a construction method for a cable-stayed continuous collaborative system composite beam bridge. The method does not require the arrangement of a large number of prestressed corrugated pipes and steel bundles to ensure the performance of a bridge deck, and fully utilizes the structural characteristics of the cable-stayed continuous collaborative system composite beam bridge itself. By changing the overlapping sequence of the continuous composite beam bridge deck, it is ensured that the bridge deck in the negative bending moment area of ​​the continuous composite beam does not generate tensile stress, while the bridge deck in the positive bending moment area generates compressive stress reserve. By increasing the tension of the cable-stayed cable, the continuous composite beam is displaced upward near the main beam on the side of the cable-stayed bridge, and the main beam on the side of the side span is displaced downward, so that the bridge deck generates compressive stress and the steel main beam generates tensile stress, and the compressive performance of the concrete material and the tensile performance of the steel material are fully utilized, thereby improving the material utilization rate. The pre-compressive stress of the bridge deck is completed by distributing the internal force of the composite beam itself. The construction method is simple and operable, and the structural stress is clear, thereby ensuring the rationality and safety of the structural stress.

The utility model discloses an assembly type tensioning safety platform for a prestressed steel box concrete cover beam. The upper longitudinal beam is arranged on the upper cross beam, the upper longitudinal beam and the upper cross beam are provided with screw holes at different intervals, the upper longitudinal beam and the upper cross beam are connected through screws, and the screw holes at different intervals are arranged, so that the interference effect of a capping beam top pad stone on the arrangement of the upper cross beam is avoided; the lower longitudinal beams are arranged and welded on the lower cross beams according to a certain interval and serve as a steel plate net support, and the slidable reverse buckling devices are fixed on the upper cross beams and reversely buckled on a steel cover beam top plate through U-shaped buckles and screws. The platform solves the problem that constructors do not have an operation platform in the construction procedures of pulling out steel pipes, pulling steel strands, tensioning prestress, releasing and the like of the prestressed steel box concrete cover beam. The adjustable component of the platform can adapt to cover beam structure forms with different widths and heights, the slidable reverse buckling device is fixed to the top of the cover beam, no welding is needed, and damage to the cover beam structure caused by a large amount of welding and dismantling is avoided.

The utility model discloses a device capable of being used for reducing deflection of a front lower cross beam of a hanging basket of an ultra-wide PC cable-stayed bridge. The device structurally comprises a vertical rod (1), a horizontal rod (2), an inclined rod (3), a transverse link (4) and a connecting plate (5), a vertical rod (1), a horizontal rod (2) and an inclined rod (3) in the device are main force transmission structures, the upper portion of the vertical rod (1) is connected with a corresponding lower chord of a front lower cross beam through a connecting plate (5), the lower portion of the vertical rod (1) is connected with the corresponding horizontal rod (2) and the inclined rod (3) through the connecting plate (5), and a transverse link (4) is a Z-shaped transverse link and transversely supported in a two-truss truss structure formed by splicing the horizontal rod (2), the vertical rod (1) and the inclined rod (3). According to the device, the problem that the deflection exceeds the limit due to the fact that a front lower cross beam of a conventional hanging basket is long during construction of the ultra-wide PC cable-stayed bridge is solved. The device is connected with the front lower cross beam of the hanging basket through the pin shaft, so that the device is convenient to mount and dismount.

This invention provides a recyclable prefabricated steel pile horizontal retaining plate foundation pit support system and its construction method, belonging to the field of building construction technology. It includes a vertical load-bearing system and a horizontal force transmission system. The vertical load-bearing system comprises several vertical H-shaped steel piles arranged sequentially to form a rectangle. The horizontal force transmission system comprises a rectangular frame-type capping beam and two walers. The capping beam is horizontally placed on the top of the inner side of the steel piles; the two walers are horizontally placed in the middle and lower middle parts of the inner side of the steel piles. The capping beam and walers are fixedly connected to the steel piles. This system achieves standardized design, rapid assembly and construction, reversible disassembly throughout the process, and efficient recycling of support components, fundamentally solving problems such as material waste, long construction cycles, and environmental unfriendliness. Simultaneously, modular design enhances the flexibility and adaptability of the support structure, significantly reducing the overall cost of foundation pit support and promoting the development of foundation pit engineering towards a green, low-carbon, and industrialized direction.

The utility model relates to the technical field of building structure joint connecting structures, in particular to a steel beam column connecting joint structure and a steel structure building. Comprising steel columns and steel beams. The connecting structure further comprises flange connecting pieces and web connecting pieces, the flange connecting pieces are arranged on the upper side and the lower side of the steel beam respectively, and each flange connecting piece comprises a first clamping structure in bolted connection with a steel beam flange and a first connecting part in bolted connection with a steel column. The first clamping structures are clamped and fixed to the upper sides and the lower sides of the flanges through bolt structures. The web connecting piece is located on one side of the steel beam web and comprises a second clamping structure in bolted connection with the steel beam web and a second connecting part in bolted connection with the steel column; the second clamping structures are clamped and fixed to the two horizontal sides of the web through bolt structures. The steel beam column connecting joint structure is convenient to assemble, simple in structure, high in production efficiency, reliable in quality, convenient to install and capable of saving manufacturing cost, and installation is conducted through standard prefabricated connecting pieces.