6 results about "Masonry arch" patented technology

The invention provides a masonry arch bridge deformation detection method and device, and relates to the technical field of bridge engineering construction. The method comprises the following steps of: scanning a masonry arch bridge by using a three-dimensional laser scanner according to a set period to obtain point cloud data, and constructing a point cloud model and a BIM three-dimensional real scene model according to the point cloud data; main arch ring deformation qualitative analysis is carried out through a BIM model to obtain qualitative data, quantitative analysis is carried out through a point cloud model to obtain quantitative data, deformation is evaluated according to bridge design specifications and safety standards, and a report is generated. The complete process from data acquisition, model construction, difference analysis to final deformation evaluation is covered, the deformation condition of the masonry arch bridge can be comprehensively and deeply evaluated, and a scientific basis is provided for maintenance and management of the bridge; compared with a traditional detection method, the detection method based on the three-dimensional laser scanning technology and the BIM model has higher precision and efficiency, the deformation part and degree can be more accurately positioned, and making of more targeted maintenance and repair strategies is facilitated.

The utility model discloses an anchor rod reinforcing structure in a cultural relic masonry ancient bridge body, and relates to the technical field of cultural relic masonry arch ancient bridge reinforcement. The structure comprises a bridge body, an arch ring arranged on the lower portion of the bridge body, a bridge pier arranged on the lower portion of the arch ring, a foundation arranged on the lower portion of the bridge pier, a bearing rock stratum arranged on the lower portion of the foundation and a bridge deck arranged on the upper portion of the bridge body; a plurality of vertical anchor rods, inclined anchor rods and horizontal anchor rods penetrate through the interior of the bridge body. The problems that bridge body masonry is affected by the environment to be subjected to weathering and cracking damage, the mechanical property of masonry materials is reduced, the defects that the structure is unstable, the bearing capacity is reduced and the like are possibly caused, even the risks of deformation and collapse occur, and the service life of the masonry masonry structure cultural relic ancient bridge is shortened are solved.

The invention discloses a method for reinforcing an old masonry arch bridge by using weathering-resistant steel arches, which comprises the following steps of: reinforcing the bottom of a main arch bar of the old masonry arch bridge by using a plurality of weathering-resistant steel arches, and anchoring a weathering-resistant steel support in an enlarged section pier and a foundation of the main arch by using a rigid arch foot, the weathering-resistant steel arch is connected with the old masonry main arch through anchor bolts to form a combined arch ring which is jointly stressed, so that a weathering-resistant steel arch reinforcing structure of the old masonry arch bridge is realized; a pressure glue injection method is adopted for repairing cracks existing in the original arch slab, and after a high-ductility concrete layer is painted at the connecting position of the bottom of the original arch slab and the weather-resistant steel arch, pin key anchor bolts are implanted; transverse connecting profile steel is arranged between the multiple sectionally-formed weathering-resistant steel arches to form a weathering-resistant steel frame-arch structure stress system. And the weathering steel arches and the original masonry main arch plates are tightly connected and cooperatively reinforced through pin keys and high-pressure grouting. Compared with a common steel arch reinforced masonry arch bridge, the material and construction cost of anti-corrosion measures can be effectively reduced, the reinforcing construction period is shortened, and the cost and time of later anti-corrosion maintenance are saved.

The present invention discloses a method for detecting the inclination and damage of ancient masonry arch bridges based on ensemble learning. First, in the initial stage, the point cloud data recognition module of the ancient masonry arch bridge inclination and damage detection system is set up. The initial point cloud data of the ancient masonry arch bridge and its surrounding environment are collected by a 3D laser scanner, and a structural calculation model of the ancient masonry arch bridge is established. Then, the importance ranking of the components of the traditional masonry arch bridge is calculated by the elastic modulus change method. According to the ranking results, the initial point cloud data is preprocessed and segmented. Based on PointNet++, the segmented point cloud data is recognized, the neural network is trained and updated, and the optimal recognition model of the point cloud of the stone arch bridge components is obtained. Then, the inclination and damage calculation module is set up. The current point cloud data of the arch bridge structural components is segmented by the optimal recognition model, and the inclination angle of the components is obtained through vector regression training and the Sklansky algorithm. Then, the inclination and damage conditions of the stone arch bridge structural components are obtained. The damage detection method of the present invention adopts an automated and informatized intelligent judgment method, and ensures the accuracy of inclination and damage through the method of ensemble learning.

The utility model discloses an arch dam and a reinforcing structure of a dangerous grouted rubble arch dam, and belongs to the field of arch dam reinforcement, and the reinforcing structure of the dangerous grouted rubble arch dam comprises a waterproof layer; a filling layer; the reinforcing assembly is used for being connected with the downstream side of the dangerous grouted rubble arch dam; one end of each joint bar is used for being connected with the downstream side of the illness mortar masonry arch dam, and the other end of each joint bar is connected with the reinforcing assembly; wherein the waterproof layer is used for being filled in the gap of the disease-danger grouted rubble arch dam, or the filling layer and the waterproof layer are sequentially used for being filled in the gap of the disease-danger grouted rubble arch dam. The technical effect of the utility model is that: it is convenient to effectively deal with illness problems.