Key-joint bearing platform and landscape pier comprising same and being used for karst geology

Abstract

The invention discloses a key-joint bearing platform and a landscape pier comprising the same and being used for karst geology. The key-joint bearing platform comprises concrete and a cage-shaped frame, wherein the concrete is poured into the cage-shaped frame; the cage-shaped frame mainly comprises a group of horizontal ring-shaped stirrups and two groups of vertical ring-shaped stirrups which are mutually vertical and are sheathed and hooped mutually in a two-two manner; all the horizontal ring-shaped stirrups are distributed in parallel and in the vertical direction, while all the vertical ring-shaped stirrups are arranged distributed in parallel and in the horizontal direction. The key-joint bearing platform and the landscape pier disclosed by the invention have the advantages that the stirrups in the three directions are nested and sheathed to tightly encircle the concrete inside and form a cage-body sheathing and hooping effect, so that the three-dimensional stress intensity of the concrete is increased and further the core strength of the concrete is improved compared with concrete in a single-direction stress state; three-dimensional orthogonal-stressing closed stirrups form a space-isotropic-orthogonal closed stressing system, so that the smooth transferring of complex stress flow of pulling, pressing, bending, shearing and twisting from an upper structure of a cross joint to a lower structure is realized.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a key node cap, and also relates to a landscape pier for karst geology including the key node cap. Background technique [0002] The pier is located in the middle of the bridge and is a building that supports the upper structure of two adjacent spans. Its function is to transfer the load transmitted by the superstructure to the foundation reliably and effectively. Bridge piers are divided into two categories: gravity piers and light piers. In recent years, due to the advantages of light and beautiful appearance, less masonry, can reduce foundation load and save foundation engineering, light-weight bridge piers have developed rapidly, and the double-column piers in light-weight bridge piers are currently the most commonly used in traditional bridge substructures. Generally, two piles or pile group foundation are used under the column. [0003] However, in karst...

AI Technical Summary

Problems solved by technology

[0004] ⑴ Due to the continuous improvement of the visual aesthetic effect requirements of structures, the traditional double-column pier structure is relatively simple, the shape of the cover beam is monotonous, the columns under the bridge are numerous, and the line of sight is limited, giving people a feeling of depression, lack of creativity, and lack of landscape. It is difficult to integrate with the surrounding environment, and it is difficult to meet people's aesthetic pursuit

When the height of the karst cave is greater than 1m, it is usually necessary to fill the wall with clay and flakes, and the workload of filling the karst cave is huge; because underground karst caves are difficult to detect, it is uncontrollable to use clay and flakes to treat the cave. If the construction is not careful , it is very easy to cause ground subsidence, causing casualties and property losses; if double piles or pile group foundations are used, the manpower, material resources, financial resources and construction risks will be doubled

[0006] (3) If the karst cave not only has a large vertical height, but also exceeds the range of the pile foundation of the bridge pier in the horizontal direction, it will lead to poor pile forming conditions, and the stability of the overall structure of the bridge pier cannot be guaranteed

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