Ocean windproof bridge support

Abstract

An ocean windproof bridge support comprises a support body and a windproof mechanism. The support body comprises an upper seat plate, a middle seat plate, a lower seat plate, a plane friction pair anda spherical friction pair; the windproof mechanism comprises one-way variable telescopic covers, a transverse protection plate, a limiting plate and a connecting plate, and the two one-way variable telescopic covers are arranged on the lower seat plate on the two sides of the upper seat plate in the longitudinal direction respectively. The limiting plate is arranged between the upper base plate and a connecting plate fixed to the upper base plate, a gap used for longitudinal stretching and retracting of the one-way variable telescopic cover and a gap used for vertical and lateral rotation ofthe support body are formed between the limiting plate and the connecting plate, and the upper ends of the two transverse protection plates are fixedly connected to the surfaces of the two sides of the upper base plate in the transverse bridge direction correspondingly; the lower end of the transverse protection plate is a free end, the free end corresponds to the side face of the lower base plate, and a transverse moving gap is formed between the free end and the side face of the lower base plate. The support is high in rigidity, capable of resisting typhoon acting force and good in windproofcapacity.

Description

technical field [0001] The invention relates to the technical field of bridge supports, in particular to a marine windproof bridge support. Background technique [0002] Spherical bearings have the characteristics of high bearing capacity, simple structure, flexible rotation and excellent durability, and are widely used in railways, highways, urban and intercity rail transit bridges. The spherical bearing mainly uses two friction pairs—plane friction pair and spherical friction pair to complete the bearing, displacement and rotation functions of the bearing. Both the plane friction pair and the spherical friction pair are made of stainless steel slide plate and non-metallic slide plate, which is the core component of the spherical bearing and the key to the service life of the bearing. Therefore, its dustproof seal is very important. Once dust and impurities enter The friction surface will seriously affect the functionality and durability of the bearing. Especially in the ...

AI Technical Summary

Problems solved by technology

When bridge bearings are used in coastal typhoon-prone areas, if effective wind and wind resistance measures are not taken, the protective hoardings on the plane friction surface of the bearings are more likely to be damaged by strong winds

[0003] At present, the external dust-proof sealing device of the spherical bearing in China mainly adopts the structure that the polyurethane hoarding board and the rubber hoarding board surround the whole circle of the bearing seat plate and fix it with beading, or adopts the steel structure as the framework and installs the plexiglass plate on the upper surface. structure to achieve the dustproof effect, but there are the following disadvantages in actual use: the polyurethane hoarding, rubber hoarding or machine glass hoarding will be affected by environmental factors such as ozone and ultraviolet rays, and will age, and it is prone to occur in high humidity environments. Performance degradation after hydrolysis or water absorption, resulting in damage and cracking, resulting in a decrease in sealing effect and affecting the protection life

The dustproof devices of the two structures are not suitable for strong wind environments, especially when used in coastal typhoon-prone areas, polyurethane hoardings, rubber hoardings and plexiglass hoardings are easily damaged and torn due to insufficient fixing force and their own material characteristics. , causing the friction surface of the bearing to be exposed, which cannot play a long-term protective role

The existing protective device needs to reserve a space for displacement activities. In the case of large support displacement, the structure of the dust-proof sealing device is large, and the bridge structure cannot meet the installation requirements.

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