本文關(guān)鍵詞：鋼管約束高強(qiáng)灌漿料局部承壓及抗沖切性能研究　出處：《河北聯(lián)合大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 高強(qiáng)灌漿料 局部承壓 抗沖切 極限承載力

【摘要】：隨著灌漿料的快速發(fā)展，它的應(yīng)用領(lǐng)域也越來(lái)越廣泛。目前對(duì)灌漿料的研究主要是在配制和特性等方面，而在力學(xué)性能方面和相關(guān)的計(jì)算方法方面研究卻極少。本課題主要是根據(jù)高強(qiáng)灌漿料在預(yù)制裝配式節(jié)點(diǎn)連接裝置中的應(yīng)用，從局部承壓和抗沖切兩種受力形式來(lái)研究鋼管約束作用下的高強(qiáng)灌漿料的破壞特性和受力特點(diǎn)，從而提出鋼管約束高強(qiáng)灌漿料在兩種受力形式下的極限承載力計(jì)算公式，填補(bǔ)灌漿料在力學(xué)性能方面研究的空白。 通過(guò)對(duì)10個(gè)灌漿料強(qiáng)度為C80、高度為171mm、外徑為114mm的圓鋼管約束高強(qiáng)灌漿料試件進(jìn)行局部承壓試驗(yàn)，從鋼管不同壁厚和類(lèi)型兩方面對(duì)其受力特點(diǎn)和破壞形式方面進(jìn)行了研究。鋼管約束高強(qiáng)灌漿料的破壞屬于劈裂破壞，隨著鋼管壁厚的增大，鋼管約束作用越強(qiáng)，極限承載力也越大；試件的鋼管上部比下部變形大，相應(yīng)對(duì)灌漿料的約束作用也大；提出了局部承壓荷載作用下圓鋼管約束高強(qiáng)灌漿料的極限承載力修正公式，該公式是在灌漿料強(qiáng)度等級(jí)為C80，套箍指標(biāo)小于1.5時(shí)得出的，可以用于鋼管約束高強(qiáng)灌漿料極限承載力計(jì)算。 對(duì)24個(gè)高度為115mm、外徑為219mm的鋼管約束高強(qiáng)灌漿料試件進(jìn)行了抗沖切試驗(yàn)研究，從灌漿料強(qiáng)度、沖切角度、彈簧環(huán)數(shù)量等方面展開(kāi)對(duì)試件抗沖切性能的研究。鋼管約束高強(qiáng)灌漿料破壞形態(tài)是脆性破壞；沖切角度和灌漿料強(qiáng)度越大，試件的極限承載力就越大；配置彈簧環(huán)的數(shù)量對(duì)灌漿料極限承載力影響不大，而彈簧環(huán)位置影響卻很大；提出了鋼管約束高強(qiáng)灌漿料極限承載力的計(jì)算公式。
[Abstract]:With the rapid development of grouting material, its application field is more and more widely. The research of grouting material is mainly in the preparation and characteristic, but rarely in the study of mechanical properties and related calculation methods. This paper is mainly based on high strength grouting material connection device application in prefabricated joints from the local pressure, and punching two stress form to study high-strength grouting steel tube confined under the action of material damage characteristics and stress characteristics, thus put forward the steel tube confined high strength grouting material in the limit of two kinds of force under the form of bearing capacity calculation formula of grouting material, fill the gaps in the study of the mechanical properties.
Through the 10 grouting material strength is C80, height 171mm, diameter of circular steel tube confined high strength grouting material 114mm local bearing test specimens from steel tubes with different mechanical properties and failure forms were studied by two aspects of wall thickness and type of steel tube confined high strength grouting material. The damage to splitting failure with the increase of the thickness of steel tube, steel tube, more strong constraint, the ultimate bearing capacity of the steel tube; try upper than the lower deformation, the corresponding large constraint on grouting material; put forward the role of local pressure load circular steel tube confined high strength grouting material limit the corrected formula of bearing capacity, the formula in the grouting material strength grade is C80, the confinement index is less than 1.5 that can be used to calculate the bearing capacity of steel tube confined high strength grouting material limit.
The 24 height 115mm, diameter 219mm tube confined high strength grouting material for punching test specimens from grouting material strength, cutting angle, hand ring spring number of punching properties of specimens. The steel tube confined high strength grouting material is brittle failure form of punching failure; cutting angle and grouting material strength increases, the ultimate bearing capacity of specimen is greater; configuration of the number of spring ring on the ultimate bearing capacity of grouting material has little effect, while the spring ring position had great influence; put forward the calculation formula of ultimate bearing capacity of steel tube confined high strength grouting material limit.

【學(xué)位授予單位】：河北聯(lián)合大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TU398.9

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本文編號(hào)：1391054