Anti-toppling and drainage-promoting curb

Abstract

The invention discloses an anti-toppling and drainage-promoting curb. The curb comprises notch sections and non-notch sections, wherein the notch sections and the non-notch sections are arranged in amixed mode; the distance between every two adjacent notch sections does not exceed 5m; each non-notch section comprises a bottom surface, an outer side vertical surface, an inner side roadbed splicingsurface, two lateral notch splicing surfaces and an arc top surface, wherein the height of the outer side vertical surface is larger than the height of the inner side roadbed splicing surface, the outer side vertical face faces a grassed swale or a sunken type greenbelt, the inner side roadbed splicing surface is spliced with a pavement, the arc top surface comprises an outer straight section, anouter arc section, an inner arc section and a straight roadbed section which are sequentially connected from the outer side vertical surface, and the outer arc section is tangent to the inner arc section at the joint; at least one strip-shaped protrusion is arranged on the top surface of each notch section and is obliquely arranged in the gradient direction toward the pavement; and the longitudinal sections of the strip-shaped protrusions are semicircular. The curb has the advantages that the anti-toppling performance can be obviously improved, meanwhile, the increase amplitude of the manufacturing cost can be obviously controlled; and In addition, the performance of collecting rainwater runoff can be obviously improved.

Description

technical field [0001] The invention relates to the technical field of municipal engineering, in particular to a curb stone which resists toppling and promotes drainage. Background technique [0002] In order to solve the increasingly serious waterlogging and non-point source pollution problems in cities in recent years, the construction of sponge cities has become the consensus of the industry and the mandatory requirements of the country. [0003] One of the cores of sponge city construction is to promote the low-impact development of rainwater facilities, that is, to change the previous design idea that the urban green space is higher than the surrounding ground, and to provide space for rainwater storage and intercept rainwater through technical measures such as the construction of grass planting ditches and sunken green spaces. Runoff pollution; however, these new technical measures have brought about many changes in details, and there are many conflicts with traditiona...

AI Technical Summary

Problems solved by technology

However, the direction of the notch (notch) of the curb is often perpendicular to the direction of rainwater runoff, resulting in extremely poor water collection effect. When the surface runoff height is 10 mm, the measured effective water collection rate is less than 30%. See the attached figure 2

[0005] The above-mentioned measures of deepening the bottom to prevent tipping not only greatly increase the cost, an average increase of 100%, but also the actual use effect is not ideal. The holding force M from the soil below, and the curb's own gravity W are not helpful against overturning, see the attached image 3 ; when the curb deflects slightly under the action of the external force F, the deflection axis O moves down to the bottom of the curb, and no longer coincides with the direction of the curb's own gravity W, at this time, the holding force M of the lower soil no longer works, and The direction of the curb's own gravity W moves to the outside of the curb's deflection axis O (near the green side), so the curb's own gravity accelerates the overturning of the curb at this time, see the attached Figure 4

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