The oblique pull bridge of the small production kit

The oblique pull bridge, also known as the oblique bridge, is a kind of bridge that pulls the main beam directly on the bridge tower with many pull ropes, and is a kind of structural system which is combined by the pressured tower, the pulled rope and the bent beam. It can be regarded as a multi-span elastic support continuous beam with a cable instead of a support. It can reduce the bending moment in the beam body, reduce the height of the building, reduce the weight of the structure and save the material. The oblique pull bridge is mainly composed of sota, main beam and cable.

Experimental objective: to understand the balance between mechanics transmission and mechanics

Experimental cognition:

Bridge pier: environmental protection wood bar composition, strong versatility, odorless, pollution-free, is the main support structure of the oblique pull bridge

Bridge surface: environmental protection wood bar composition, strong versatility, odorless, pollution-free, is the main support structure of the oblique pull bridge

Experimental steps: 1. Experiment preparation to understand experimental equipment: bridge pier, bridge surface, rope.

Experimental report:

The main load on the bridge is not the car or train above it, but its self-weight, mainly the main beam. The two sides of the Sota are symmetrical sloping cables that connect the main beams of the Sorta. Assuming that there are only two oblique cables on either side of the Sorta, one symmetrically each on the left and right, the two oblique cables are subjected to the gravity of the main beam, which produces two symmetrical pull forces along the oblique cable direction, and according to the force analysis, the force on the left can be broken down into horizontal directions A force on the left and a force upright down; a force on the same right can be broken down into a force horizontally to the right and a force upright down; because the two forces are symmetrical, the two forces horizontally to the left and horizontally to the right cancel each other out. Eventually the gravity of the main beam becomes two forces upright and down against Sota, so that the force is passed on to the bridge below Sota.