Connecting structure for end parts of longitudinal aggregates of bulk carrier

Abstract

The invention discloses a connecting structure for end parts of longitudinal aggregates of a bulk carrier. The connecting structure comprises a connecting plate; the web of a transverse strong frame is perpendicular to a deck longitudinal beam, the connecting plate comprises a plate body and a toe end, the toe end is connected to the plate body, the free edge of the plate body comprises a first plate body edge and a second plate body edge, and the free edge of the toe end comprises a first toe end edge, a second toe end edge, a third toe end edge and a fourth toe end edge; the first toe end edge is connected to the second plate body edge; the first plate body edge is a straight line which is obliquely distributed upwards, and the second plate body edge is a concave arc; the first toe end edge is a straight line parallel to the deck longitudinal bone; the fourth toe end edge is a straight line perpendicular to the deck longitudinal beam; and the second toe end edge is a convex arc, andthe third toe end edge is a concave arc. The connecting structure can improve the fatigue strength of longitudinal end connection and relieve the problem of stress concentration at the joint, and alsocan effectively control the weight of steel materials and reduce the construction cost.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to a connection structure at the ends of longitudinal frames of bulk carriers. Background technique [0002] The structural characteristics of bulk carriers determine that designers must focus on the fatigue strength of the end connections of longitudinal members. The existing connection forms may lead to unsatisfactory fatigue strength and serious stress concentration problems at the ends of longitudinal members, which are difficult to meet design specification requirements. To improve this situation, strengthening the longitudinal members near the connection is the most direct and rough method, but the weight of the steel will increase significantly, which is obviously not cost-effective. The more economical and effective method is to reduce the stress concentration factor of the connection at the end of the longitudinal. Realization, because the fatigue life of the structure is ve...

AI Technical Summary

Problems solved by technology

The stress concentration factors of the above-mentioned typical structural forms are stipulated in the code, and it may be difficult to meet the requirements of the ship design code by using this data to check the fatigue strength of the end connection of the longitudinal frame, and it is necessary to thicken the corresponding longitudinal member or greatly increase the size of the connection structure It will have a certain effect, which will lead to a substantial increase in the weight of the steel material and an increase in construction costs

Images