利用温度检测钻孔灌注桩混凝土拌合物面的研究

doi:10.11720/wtyht.2019.1464

Abstract
Figure/Table
References
Related Citation (12)

Download: PDF (1201 KB) HTML (0 KB)
Export: BibTeX | EndNote (RIS)

Abstract

Based on the principle of hydration heat release and indoor and outdoor tests, it is found that there is a significant temperature difference between the concrete mixture layer and the floating slurry layer, indicating that the pouring height of the concrete mixture can be determined by the temperature change. A portable temperature control device is designed to determine whether the concrete mixing surface reaches the designed height, that is to say, a temperature sensor is respectively embedded at the height of the designed pile top and at the height of 50cm below, and the temperature sensor of 50cm below the height of the designed pile top is used to obtain the temperature peak of the concrete mixture, and then the temperature peak of the temperature sensor at the height of the designed pile top is used to determine the concrete mixture top. It is suggested that the concrete mixture should be overfilled at the height of the designed pile top, namely 50cm above the second temperature sensor, which is 0.3m less than the norm and can save concrete.

Key words： bored piles concrete mixture laitance mud temperature controlled device temperature sensor

Received: 18 December 2018 Published: 31 May 2019

P631

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Peng DU
	Xiao-Ling LIU
	Xin-Zhan XU
	Qiang CHANG
	Lian-Hong FU

Cite this article:

Peng DU,Xiao-Ling LIU,Xin-Zhan XU, et al. Research on concrete mixture surface detection for bored pile based on temperature[J]. Geophysical and Geochemical Exploration, 2019, 43(3): 667-671.

URL:

https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2019.1464 OR https://www.wutanyuhuatan.com/EN/Y2019/V43/I3/667

Diagram of concrete mixture filling environment simulator
1—multi-functional reaction frame; 2—reserved channel; 3—jack; 4— flange; 5—jacking speed controller; 6—material drums; 7—displacement sensor; 8—temperature sensor; 9—leverage of stainless steel; 10—acquisition system

Materials for making concrete mixtures

Diagram of temperature variation of different layers with time

Field test equipment drawing
1—push rod; 2—No.1, No.2 temperature sensor; 3—No.3, No.4 temperature sensor; 4—beam; 5—mounting support; 6—square casing; 7—medium channel steel; 8—bottom channel steel; 9—second compression bolt; 10—lock bolt; 11—first compression bolt; 12—flange; 13—sleeve for internal thread; 14—locking nut; 15—steel cage; 16—hole; 17—T hole

Graph of temperature change

Temperature variation curve of no.2 temperature sensor

Layout of temperature sensor

[1]	邵春, 鄢泰宁, 兰凯 , 等. 超声波测钻孔灌注桩混凝土拌合物灌注面高程的研究[J].工程勘察, 2009(6):74-78.
[1]	Shao C, Yan T N, Lan K , et al. Study on altitude measurement of concrete injection surface of bored pile with ultrasonic wave[J].Geotechnical Investigation & Surveying, 2009(6):74-78.
[2]	付祖良 . 钻孔灌注桩水下混凝土拌合物灌注技术研究与应用[D]. 武汉:华中科技大学, 2006.
[2]	Fu Z L . Research and Application on the Technology of Pouring Concrete of Bored Piles Under Water[D]. Wuhan:Huazhong University of Science & Technology, 2006.
[3]	Du P, Liu X L, Fan J L , et al. Review of Research on Elevation Positioning of Concrete Filling Surface of Bored Piles[C]// 2018 International Conference on Civil and Hydraulic Engineering, Qingdao,China,Institute of Physics Publishing, 2018.
[4]	李亮亮, 卢士涛, 冯玉国 , 等. 低标高桩顶水下钻孔灌注桩混凝土拌合物超灌高度控制装置研制[J]. 施工技术, 2017,46(1):36-38.
[4]	Li L L, Lu S T, Feng Y G , et al. Development of control device of concreting in excess for bored pile underwater with low elevation pile head[J]. Construction Technology, 2017,46(1):36-38.
[5]	张磊, 崔建军, 李建辉 . 超长细比钻孔灌注桩施工技术研究[J]. 建筑技术开发, 2017,44(20):92-94.
[5]	Zhang L, Cui J J, Li J H . Study on constrution technique of super slenderness ratio bord pile[J]. Building Technology Development, 2017,44(20):92-94.
[6]	张海滨, 孙杰 , 等 .混凝土拌合物灌注桩灌注高度控制装置及其使用方法[P].中国专利,CN106013160 A, 2016 -10-12.
[6]	Zhang H B, Sun J, et al. Filling Height Control Device of Concrete Mixture in Bored Piles and its Application Method[P].Chinese Patent, CN106013160A, 2016 -10-12.
[7]	兰凯 . 钻孔桩砼灌面超声波测量的关键技术及其实现[D]. 北京:中国地质大学, 2008.
[7]	Lan K . Key technologies on using ultrasonic method for concrete casting level measurement in borded pile foundation and its realization[D]. Beijing: China University of Geosciences, 2008.
[8]	连绍平 . 采用探测杆测定桩顶砼面[J].探矿工程, 1999(3):38.
[8]	Lian S P . The concrete surface at the top of pile is measured by detecting rod[J]. Exploration Engineering, 1999(3):38.
[9]	朱景萍, 刘留春, 贺学庆 , 等. 灵江特大桥大直径水下钻孔灌注桩施工技术[J]. 建筑施工, 2007,29(3):211-213.
[9]	Zhu J P, Liu L C, He X Q , et al. Construction technology of underw ater big diam eter bored pile for Linjiang super large bridge[J]. Building Construction, 2007,29(3):211-213.
[10]	张国强, 曹惠宾 . 水下混凝土拌合物超灌标高定位研究[J].地质装备, 2006(4):33-35.
[10]	Zhang G Q, Cao H B . Study on the pouring elevation of underwater concrete[J]. Equipment for Geotechnical Engineering, 2006(4):33-35.
[11]	陈德强 . 采用水下混凝土拌合物灌注标高定位仪进行标高定位的研究[J]. 价值工程, 2018: 126-128.
[11]	Chen D Q . Research on elevation positioning using underwater concrete pouring elevation locator[J]. Value Engineering, 2018: 126-128 .