42results about How to "Does not affect structural safety" patented technology

The invention relates to an improved repair method for a stainless steel lining of a pipeline. The design of a stainless steel coupling and a process for anchoring the coupling and an old pipeline are added on the basis of a conventional stainless steel lining repair method, and the overall capability of the lined pipeline in resisting negative pressure and external water pressure is improved by virtue of the stainless steel coupling; by the coupling, a function of limiting the deformation of the lined pipeline is realized, and a part of load on the lined pipeline can be transmitted to an old pipeline through a coupling anchorage bolt to utilize the strength of the old pipeline, so that the overall stiffness of the pipeline is improved. Compared with a conventional method, the method has the advantages that the lined pipeline with the same wall thickness is higher in ring stiffness, negative pressure resistance and external water pressure resistance, so that the repaired pipeline can run more safely, the service life of the repaired pipeline is also guaranteed, and the cost performance of a repaired large-diameter pipeline is higher.

The invention discloses a local chord support combined net rack structure which comprises a net rack and a plane truss. A grid at the midspan part of the net rack is replaced by a plane truss, an upper chord of the plane truss is connected with net rack upper chords of the net racks on the two sides, and a lower chord of the plane truss is connected with net rack lower chords of the net racks on the two sides; and the lower chord member is a stretchable chord member. The local chord support combined grid structure has the advantages of being high in roof modeling adaptability, small in indoor space occupation, small in thrust on the supporting columns and the like.

The invention provides a radar wave-based nondestructive test method for internal defects of wooden pillars of an antique building. The method comprises the following steps: putting a radar wave-based detection device on an initial detection point of a first unit region, detecting all unit regions in a group upwards one by one from the unit detection region, performing once complete circular scanning during detection of each unit region, recording detection data in real time, gathering all the collected detection data, processing and analyzing, generating internal detection images of the wooden pillars in the detection region of the group, and judging whether the wooden pillars have internal defects or not according to the generated images; if all the unit regions do not have internal defects, directly determining the nature; if the unit regions have internal defects, further judging whether the detected internal defects are completely displayed or not, and performing out-diffusion subsequent detection on the internal defects which are not completely displayed until the internal defects are completely displayed; finally obtaining a qualitative detection result. The method is capable of rapidly and accurately detecting whether defects of holes, purification and the like exist in the wooden pillars of the antique building or not in site and judging the positions and sizes of the defects.

The invention provides a protection structure and a construction method for mooring piles on slopes in water level fluctuation areas. The mooring piles include reinforced concrete pouring piles, pile caps and mooring piles. Beam and deck structure. The construction of the structure mainly includes: excavation of earth and stone on the slope surface; positioning and pouring of pile foundation; excavation of reinforced concrete lattice beam soil; anchor construction; laying of geotextile inverted filter layer; Construction; pouring of reinforced concrete face protection structure; construction of wedge-shaped groove and steps; installation of steel bollards and a series of processes.

The invention relates to a rectification and reinforcement structure for an inclined building and a construction method thereof. The rectification and reinforcement structure for the inclined buildingcomprises a plurality of reinforcing piles which penetrate through a reinforced concrete slab of a foundation of a building on the inclined side of the building along the outline of the building andone or more rows of rectification holes formed in the opposite side of the inclined side of the building along the outline of the building. The rectification holes are formed by means of being inclined to the inner side of the foundation of the building. The direction of the rectification holes are corrected by a high-pressure jet machine in the rectification holes. The rectification holes are reinforced by high-pressure jet of cement slurry after high-pressure jet of high-pressure air-water on the foundation of the building and the elevation range below the foundation of the building. According to the rectification and reinforcement structure for the inclined building and the construction method thereof, the reinforcing piles are used for reinforcing the inclined side of the building, therectification holes are formed in the opposite side of the inclined side of the building, high-pressure air-water forced landing rectification technology is used for enabling the building to be subjected to rotating rectification by using the inclined side as the axis, and according to the monitoring data, the speed, rotating speed and air-water pressure of high-pressure jet machine are adjusteddynamically and informationally to punch and cut soil with any depth; and the construction is simple, efficient and easy to operate, the cycle is short, the structural safety of the building is not affected.

The invention provides a hybrid structure prefabricated toilet for a prefabricated building and a manufacturing method thereof. The toilet comprises a wall unit, a sewage main riser, and a bottom plate unit fixedly connected with a steel beam or a superposed beam. During operation, the bottom plate unit is fixedly connected with the steel beam or the superposed beam through connecting pieces I. The bottom plate unit is connected with a floor through cast-in-place nodes. A wallboard is fixedly connected with the bottom plate unit through the matching of a connecting plate II and a correspondingconnecting plate I. The sewage main riser penetrates through and is fixedly connected to the bottom plate unit. The manufacturing method of the toilet includes the steps of scheme design, prefabricating the bottom plate unit, prefabricating the wallboard, transportation to the site, assembling and pouring floors and the like. The toilet can reduce construction difficulties caused by weather changes, is convenient and quick to install, and has good anti-leakage performance.

The invention discloses an external wall device based on a light external wall panel and an installation method. The external wall device comprises the light external wall panel (1) used as an external wall component, a side frame arranged on a building wall body, a frame (2) arranged on the light external wall panel (1), and an end component arranged between the frame (2) and the side frame. Through the side frame and the frame (2), the light external wall panel (1) is installed on the building wall body, and through the end component, the position of the light external wall panel (1) can be adjusted in the single direction, and therefore the installation strength of the external wall is improved.

The invention discloses a method for measuring the deflection of a total station reflector-type steel beam, which specifically includes the following steps: step I, popping up an axis or axis offset line on the surface of the steel beam, and laying a reflector on the steel beam; Arrange at least two known elevation points on the bottom plate below the beam and conduct level closed joint measurement; step III, set up the instrument at any position on the bottom plate, and measure the elevation of one of the known points; step IV, switch the total station to the reflection sheet observation mode , aim at the reflector at the monitoring point to measure the relative coordinates and elevation; step V, derive the deflection value formula: step VI, conduct two observations on the left side and the right side of each monitoring point, and take the average value as a round observation value; step VII, taking the average value of independent observations as this observation result; Step VIII, monitoring the steel beams standing, lifting, placing, unloading and roof concrete construction processes, and analyzing the force through deflection changes. The steel beam deflection measuring method is convenient, quick and accurate.

The invention relates to a cap-beam-column node replacement advanced reinforcement hoop structure, which solves the defect that the existing cap becomes a weak node area in the basement layer-increasing project, which easily brings great safety hazards to the project, including the final The hoop structure of the first stage to be dismantled and the hoop structure of the second stage finally retained. The hoop structure of each stage adopts the same structure, including the through hole drilled through the cap, the anchor rod passing through the through hole at both ends and the The protruding end of the anchor rod is fixed to the hoop steel plate, and the anchor rod and the hoop steel plate of each stage of the hoop structure are multi-layer structures. The hoop structure of the first stage strengthens the weak area of ​​the cap joint in advance, and the hoop structure of the second stage finally strengthens the weak area of ​​the cap joint. Through the two-stage hoop structure, the outer dimension of the cap can be reduced without affecting the weak joint of the cap The structural safety of the area is improved, and finally the nodes that meet the size of the column bottom are obtained, thereby improving the safety of engineering node replacement.