9 results about "Structure Collapse" patented technology

The application relates to a building structure collapse early warning method, system, device and medium based on acoustic fingerprint characteristics. The method comprises the following steps: constructing a collapse prediction model embedded with structure mechanics and crack propagation dynamics constraints based on historical mixed acoustic signals; performing blind source separation and acoustic fingerprint feature extraction on real-time mixed acoustic signals; obtaining damage index evolution trend, uncertainty estimation value and critical state discriminant through mutation theory enhanced time series prediction; generating a comprehensive collapse risk index and predicting the remaining safe time; realizing three-dimensional positioning of the damage source based on the time difference of arrival, and generating a four-dimensional damage evolution map; and outputting multi-level visual warning signals in combination with the risk threshold and the building information model. The method can accurately capture the mutation characteristics of structure damage, and improve the real-time performance, accuracy and reliability of the collapse early warning.

The utility model discloses a novel prestress thin-wall steel constraint square bamboo column which comprises a thin-wall square steel tube with split bolt holes and a recombined square bamboo column, and a plurality of split bolt holes which are arranged at equal intervals are arranged on two sides of the recombined square bamboo column. The combination of the thin-wall square steel tube and the recombined square bamboo column is realized by applying active constraint confining pressure and mucilage glue to the internal square bamboo column, and the defects of low elasticity modulus, large influence of creep on mechanical properties, strength degradation, high possibility of cracks and other mechanical properties caused by independent use of bamboos are overcome. The current situation that an existing bamboo structure and an existing steel-bamboo combined structure are hindered from wide use due to the fact that raw bamboo material resources are reduced is improved, a layer of flame-retardant gypsum rock wool board is arranged between the protective layer bamboo plywood and the thin-wall square steel pipe, and the flammability of the internal square bamboo column under the fire disaster condition can be effectively improved; and the possibility of bearing capacity failure and overall structure collapse caused by bamboo column combustion under the fire disaster condition is reduced.

This utility model relates to the field of ceramic packaging cartons, specifically disclosing a ceramic packaging carton with corner reinforcement sleeves. The carton includes a main body, with a reinforcing protective mechanism on its outer side. This mechanism includes an outer frame, and four corners of the lower inner wall of the outer frame are each provided with a first reinforcing sleeve that fits against the outer wall of the main body. A cover is provided on the top of the outer frame. The first and second reinforcing sleeves work together to form a fully enclosed reinforcing structure for the upper and lower corners of the main body, providing targeted reinforcement to the corners. This effectively solves the problems of tearing, deformation, and structural collapse caused by stress concentration at the corners of traditional cartons, preventing ceramic products from losing protection. The sponge pad absorbs the vibration energy generated by transport bumps through elastic cushioning, effectively preventing ceramic products from rolling, colliding, or shifting within the main body of the carton, thereby improving the transport safety of ceramic products and reducing the breakage rate.

The application belongs to the technical field of precision casting, and particularly relates to a heat preservation riser for precision casting and a preparation method thereof. The heat preservation riser comprises the following components in parts by weight: heavy refractory aggregate 25-40 parts, light refractory aggregate 10-20 parts, aluminum silicate fiber 35-55 parts, high-temperature resistant binder 2-5 parts, heat preservation modifier 0.5-2 parts, dispersing agent 0.3-1 part, and high-temperature reinforcing agent 10-20 times the total weight of the aggregate. The heat preservation riser is formed by using silica sol or water glass as the high-temperature resistant binder, matching with high-content aluminum silicate fiber and heavy and light refractory aggregates, and can stably withstand high-temperature baking at 800-1200 DEG C. After baking, the heat preservation riser has no cracking, deformation or structure collapse, solves the core pain point that traditional resin-based risers are thermally decomposed at 500-600 DEG C, can be directly embedded into a shell mold for baking, does not need additional treatment, is suitable for the whole process of investment precision casting, and greatly simplifies the production process.

The application discloses a safety rope system for structure collapse identification and quick release control, which comprises a full-body safety belt, an anchoring end, an energy-absorbing buffer assembly, a quick release assembly, a sensing assembly and a control module; the anchoring end is fixed on a construction structure, and the energy-absorbing buffer assembly is connected between the anchoring end and the full-body safety belt; the quick release assembly is connected with the anchoring end, and is kept in a locked state in a normal state or when an individual falls; when a structure collapse trigger signal is received, the quick release assembly is automatically released, so that the safety rope is separated from the anchoring end; the sensing assembly is used for acquiring multi-parameter information of the safety rope system; the control module acquires the multi-parameter information, judges whether the structure collapses or not, and outputs a control signal to the quick release assembly. Compared with the prior art, the safety rope system for structure collapse identification and quick release control and the method thereof have the advantages that the safety rope can distinguish between individual falling and structure collapse, and the safety of users is ensured.

The invention discloses a post-earthquake building semi-ruin structure collapse probability prediction method based on image recognition and deep learning. The method comprises the following steps of: (1) acquiring a building ruin image capable of representing key damage characteristics such as a concrete peeling area (S), a steel bar buckling degree (Y), a structure overall inclination angle (alpha), a component node cracking and local falling degree (F), ruin overall integrity and residual support degree (E) and the like through an unmanned aerial vehicle; (2) constructing a deep learning model CVCB-Net fusing a convolutional neural network, a visual Transform, a convolutional long-short term memory network and a Bayesian network; and (3) based on the quantized multi-dimensional damage characteristics, generating a collapse probability curve and risk distribution under different aftershock peak acceleration conditions by adopting Bayesian inference, and carrying out risk rating division. According to the method, non-contact, rapid and intelligent safety assessment of the post-earthquake semi-ruin structure can be realized, and a scientific basis is provided for emergency rescue and reinforcement decision during aftershock.

The application discloses a polymer modified phase change fireproof structure for a roof eVTOL apron and a method thereof, and belongs to the technical field of low-altitude traffic infrastructure safety. The structure is laid on an existing or newly built building reinforced concrete floor, and sequentially comprises a thermal barrier insulation layer, a phase change heat absorption bearing layer and a grid fireproof isolation flow guide component from bottom to top. The phase change bearing layer is packaged with phase change aggregates by using high-performance polymer cement mortar, and has the characteristics of fire resistance, high toughness and active heat absorption. The isolation flow guide component is made of high-temperature and corrosion-resistant material and is used for blocking the flowing fire. The application also discloses a quantitative design method based on the "heat-power-flow" coupling theory, which accurately calculates the thickness of the functional layer and the groove parameters, and gives a standardized construction process. The application effectively solves the problems of fire spread and structure collapse caused by the extremely hot impact of lithium batteries and the flowing fire of the roof apron through passive structure protection.

The application provides an assembled composite wall lateral bearing capacity obtaining method and system, and belongs to the technical field of building engineering, and comprises the following steps: calculating the lateral bearing capacity of the steel pipe concrete frame column according to the limit bending moment of the frame column and the height of the shear wall; obtaining the lateral bearing capacity of the intermediate wallboard based on the lateral bearing capacity provided by the concrete and the blocks and the lateral bearing capacity of the rib beam and the rib column; and calculating the limit lateral bearing capacity of the assembled composite wall by summing the lateral bearing capacity of the steel pipe concrete frame column and the lateral bearing capacity of the intermediate wallboard. On this basis, the synergistic work coefficient is introduced to optimize the limit lateral bearing capacity of the composite wall. Reasonably determining the lateral bearing capacity of the assembled composite wall helps to optimize the design of the shear wall, reduces the risk of safety hazards or building structure collapse, and ensures the safety margin of the wall structure.

The utility model discloses a hydraulic ring geological exploration soil sampling device which comprises a drilling assembly, a support, a lifting piece, a servo motor, a sampling piece, a supporting piece and a fixing block, the lifting piece is arranged on the support, the servo motor is arranged on the lifting piece, the sampling piece is arranged on the servo motor, and the supporting piece is arranged on the supporting piece. The supporting piece is arranged on the support, and the fixing block is fixedly installed on the support. The spliced sampling device has the beneficial effects that the spliced sampling pipes are adopted, the sampling pipes are spliced together to be fixedly connected with sampling equipment during sampling and go deep into soil for sampling treatment, and after sampling is finished, the sampling pipes are detached from transmission equipment and are decomposed into two parts, and the internal sample soil is integrally taken out; the problems that the original structure of the soil collapses due to vibration and impact force generated by knocking and the sampling pipe is damaged during sampling in a traditional mode of knocking the sampling pipe are solved.