Traffic load damping structure and construction method

Abstract

The invention discloses a traffic load damping structure and a construction method, in accordance with that present invention, A macadam partition wall is arrange between that outer side of the edge of the roadbed and the pavement and a plurality of pile foundation, The gravel partition wall extends along the longitudinal direction of several piles, thus effectively reducing the disturbance of traffic load vibration wave to the newly-poured concrete of pile foundation. The vibration-absorbing structure also has the following characteristics: first, it has strong pertinence and is especially suitable for the newly-poured concrete construction of bridges in highway reconstruction and expansion; Second, the design of damping structure is quantitative, the scale of gravel partition is reasonable, and the efficiency is improved. Third, adding anti-disturbance admixture to pile foundation concrete to further improve the quality assurance rate of pile foundation concrete. Therefore, by designing this kind of traffic load damping structure and combining with the corresponding construction method, it has the advantages of simple structure, convenient use, reasonable structure, energy savingand emission reduction, enhancing the durability of the engineering structure, etc., and can ensure the quality and safety of the engineering, and the economic and social benefits are remarkable.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a traffic load vibration reduction structure and a construction method. Background technique [0002] Semi-closed traffic is a common construction method in highway reconstruction and expansion. Before the pile foundation concrete of the bridge reaches the design strength, the unclosed traffic load has a certain influence on the strength of the newly poured concrete of the bridge pile foundation. This is because the traffic load is driving on the road without closed traffic, the traffic load itself and the vibration induced by various external excitations will cause the concrete compressive strength to decrease, and the maximum will be reduced by about 10%. [0003] At present, to reduce the impact of traffic load vibration, the method of digging an open ditch between the unclosed traffic road surface and the pile foundation construction area is generally used. Due to the weak...

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Problems solved by technology

[0003] At present, to reduce the impact of traffic load vibration, the method of digging an open ditch between the unclosed traffic road surface and the pile foundation construction area is generally used. Due to the weak surface wave of the high-frequency vibration wave signal of traffic load, and the low-frequency signal (2.5 Hz ~ 20Hz) Stronger, the wave propagates deeper and farther, so the vibration reduction method of the open ditch only plays the role of reducing the vibration surface wave of the traffic load

The published patent No. CN204252173U "subway vibration isolation barrier" sets one or more than two reinforced concrete piles, steel pipe piles, crushed stone piles, immersed tube sandstone piles, cement soil mixing piles, etc. between the subway and surrounding buildings. The method of rotary grouting pile, lime-soil compaction pile or cement fly ash gravel pile isolation will play a certain role in the vibration isolation of buildings around the subway, but for the vibration reduction of newly poured concrete construction of bridge pile foundation in highway reconstruction and expansion The pertinence is not strong, the setting of the vibration damping isolator is a qualitative method, and there is no specific quantitative basis, the setting of the isolator is too shallow, the effect may not be good, or the setting of the isolator is too deep, resulting in waste

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