Please select the most similar patent number from A, B, C and D. Which number is?
A CFRP suspension strip intersecting cable support structure, suitable for the field of large-span spatial structures, and comprising a flat circular outer ring (1), CFRP suspension strips (2) being anchored on the circular outer ring (1) with wave-shaped anchors, the CFRP suspension strips (2) being interlaced to form a flat cable net, the cable net being arranged in the shape of a sunflower, in the shape of a square or in an irregular shape according to requirements, gravity rigidity blocks (3) being arranged at intersection nodes for clamping. The structure is not provided with an inner ring, the cable force is evenly distributed among the CFRP suspension strips (2), and the breaking of one CFRP suspension strip (2) would not cause the overall collapse of the structure. The structure has strong continuous collapse resistance and good robustness. The structure uses the single-layer flat cable net, the gravity rigidity blocks (3) at the various nodes are used to resist wind suction forces, and the overall structure is lightweight and aesthetically pleasing. Traditional rigid cables are replaced with the CFRP suspension strips (2), so as to reduce the amount of cable, decrease the total cost of the structure, and achieve a good economic effect.
A: A highly safe large floating structure, comprising an upper structure (1), intermediate connection structures (2), and lower floating body structures (3). The lower floating body structures (3) comprise multiple distributed floating bodies (31), and have an ultra-large waterline area as a whole. Some outer floating bodies (31) in the lower floating body structures (3) are solid-like floating bodies. The intermediate connection structures (2) are spatially distributed, and comprise connection structures intersecting the horizontal plane and/or being parallel to the horizontal plane. The connection structures intersecting the horizontal plane provide safe restoring forces. The lower floating body structures (3) are connected to the upper structure (1) by means of the intermediate connection structures (2). The large floating structure as a whole is ultra-flat. The floating structure has a multi-redundancy mechanism in structural integrity, anti-sinking, and anti-overturning capability, and has high universality and an ability to sail away from storms. When the most unfavorable sea conditions that can be foreseen appear or when the most unfavorable recorded accidents including collisions, hitting the rocks, stranding, and abnormal displacement of goods occur, it can be ensured that the overall structure of the floating structure does not disintegrate and the floating structure does not capsize and sink. Thus, the safety of persons on the floating structure can be ensured while ensuring the safety of the overall structure of the floating structure.
B: The present invention relates to the technical field of buildings, and in particular, to a cable net assembly, a building and a building construction method. The cable net assembly comprises a ring cable structure, a first connector, and a plurality of radial cables. The radial cables are connected to the ring cable structure and the first connector, respectively. The radial cables are arranged in the circumferential direction of the ring cable structure. The radial cables comprise at least two inner radial cables and outer radial cables. All the inner radial cables intersect with the end connected to the first connector. All the outer radial cables intersect with the end connected to the first connector. The ends of the inner radial cables away from the first connector are connected to the ring cable structure. Therefore, two ends of the first connector are connected to the inner radial cables and the outer radial cables respectively, connection of the inner radial cables and the outer radial cables is achieved, and the inner radial cables and the outer radial cables can be stressed integrally. All the outer radial cables and the inner radial cables intersect with the first connector, such that the inner radial cables and the outer radial cables form a fish-bellied type intersecting structure, and the overall stability of the cable net assembly is improved.
C: A CFRP material-based electrically-promoted heterogeneous catalysis and recovery apparatus and control method therefor. The apparatus comprises an external power supply (100), an electrolytic cell (300) containing an electrolyte (200), and a CFRP sample (400) and a metal sheet (500) each having one end inserted into the electrolyte (200). The electrolyte (200) comprises chloride ions and phosphotungstic acid. The other end of the CFRP sample (400) is connected to the positive electrode of the external power supply (100), and the other end of the metal sheet (500) is connected to the negative electrode of the external power supply (100). The heterogeneous catalysis and recovery apparatus features a simple structure and low costs, and is able to recover carbon fibers with good performance from a CFRP material in a short period of time by optimizing current parameters and the concentration of a catalyst.
D: A basic module of a very large floating structure, consisting of lower floating body structures (3), an upper structure (1), and intermediate connection structures (2). The lower floating body structures (3) comprise multiple distributed floating bodies (31), and have an ultra-large waterline area as a whole. The sum of the displacement volumes of the floating bodies is greater than the equal volume of water of the full weight of the floating structure. The upper structure (1) is of a frame structure or a box structure. The intermediate connection structures (2) are spatially distributed. The lower floating body structures (3) are connected to the upper structure (1) by means of the intermediate connection structures (2) to form a statically indeterminate combined space structure. The basic module as a whole is ultra-flat. Two basic modules can be combined once to form a very large floating structure at the kilometer level. The basic module has a strong resistance to wave-excitation loads and load changes, and a strong anti-sway stiffness. Relative movement of basic modules during combination and connector loads after combination can be greatly reduced.
Answer: B