【摘要】：移動(dòng)式防洪系統(tǒng)是一種具備高安全性的標(biāo)準(zhǔn)化防洪方法,但在中國(guó)的城市防洪系統(tǒng)應(yīng)用還不多,對(duì)其技術(shù)性能的研究不足是制約因素之一。該文依托某市的移動(dòng)式防洪墻工程,設(shè)計(jì)移動(dòng)式防洪墻綜合試驗(yàn)基地,蓄水試驗(yàn)以及立柱加卸載試驗(yàn),研究了移動(dòng)式防洪系統(tǒng)的預(yù)埋件安裝方法、受力性能和滲漏特性。結(jié)果表明,預(yù)埋件的直接安裝法與預(yù)留槽孔法均能滿足施工工藝和正常運(yùn)行要求,但前者優(yōu)于后者;蓄水后,移動(dòng)式防洪墻存在滲漏現(xiàn)象,其與水位呈現(xiàn)指數(shù)的變化規(guī)律,當(dāng)水位超過(guò)1.5 m時(shí)滲漏量會(huì)快速增大,達(dá)到1.7 m時(shí)滲漏量可達(dá)300 L/h;立柱加卸載(0~100 k N)過(guò)程中,首先會(huì)引起混凝土塑性變形,進(jìn)而導(dǎo)致立柱產(chǎn)生殘余位移,其受力過(guò)程表明立柱、預(yù)埋件與基座混凝土體系的破壞過(guò)程應(yīng)是由預(yù)埋件兩側(cè)混凝土逐漸向迎水面發(fā)展。
[Abstract]:Mobile flood control system is a standardized flood control method with high safety, but the application of mobile flood control system in China is not many, and the research on its technical performance is one of the limiting factors. Based on the mobile flood control wall project in a city, this paper designs a mobile flood control wall comprehensive test base, a water storage test and a column loading and unloading test, and studies the installation method, mechanical performance and leakage characteristics of the embedded parts of the mobile flood control system. The results show that both the direct installation method and the reserved groove method can meet the requirements of construction technology and normal operation, but the former is better than the latter. When the water level is more than 1.5 m, the leakage will increase rapidly, and it can reach 300 L / h when the water level reaches 1.7 m. The leakage phenomenon of the mobile flood control wall after impoundment is shown as follows: (1) the leakage of the mobile flood control wall appears to change exponentially with the water level above 1.5 m; In the process of loading and unloading (0 ~ 100 k N), the plastic deformation of concrete will first be caused, and then the residual displacement of the column will be produced. The loading process of the column indicates that the column is subjected to force. The failure process of the pre-buried concrete system and the base concrete system should be gradually developed from the two sides of the embedded concrete to the surface of the water.
【作者單位】： 華北水利水電大學(xué)水利學(xué)院;河南省水環(huán)境治理與生態(tài)修復(fù)院士工作站;黑龍江省三江工程建設(shè)管理局;
【基金】：國(guó)家自然科學(xué)青年基金項(xiàng)目(51309101) 國(guó)家自然科學(xué)基金面上項(xiàng)目(51679092)
【分類號(hào)】：TV32;TV87

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