[雙語翻譯]外文翻譯--水工建筑施工與維修的創(chuàng)新解決方案（英文）

1、 Procedia Engineering 54 ( 2013 ) 22 – 38 1877-7058 © 2013 The Authors. Published by Elsevier Ltd. Open access under CC BY-NC-ND license. Selection and peer-review under responsibility of Department of Civil

2、Engineering, Sebelas Maret University doi: 10.1016/j.proeng.2013.03.004 The 2nd International Conference on Rehabilitation and Maintenance in Civil Engineering Innovative Solutions for the Construction and the Repair of

3、 Hydraulic Structures Harald S. Müllera*, Edgar Bohnera, Michael Vogela, Vladislav Kvitsela, SolichinbaaInstitute of Concrete Structures and Building Materials, Karlsruhe Institute of Technology (KIT), Karlsruhe, Ge

4、rmany bHydraulics Laboratory, Sebelas Maret University, Surakarta, Indonesia Abstract Hydraulic structures underlie extraordinary conditions due to their prominent function and exposure. Thus, high demands have to be ma

5、de both on construction and maintenance or repair of the structures, respectively. In order to fulfill these demands new and special technologies have to be developed that ensure an effective construction and guarantee

6、 to meet the planned service life of the building required by the owner. Against this background two innovative methods for both construction and repair of hydraulic concrete structures are presented in the present p

7、aper. The methods are based on modern concrete technology and enable to either build concrete dams in flowing water or perform concrete repair below the water level. Both methods were developed at the Institute of Conc

8、rete Structures and Building Materials at the Karlsruhe Institute of Technology (KIT), Germany and were applied in practice for construction of the Bribin underground hydropower plant in Indonesia and for repair of th

9、e river hydropower plant of Albbruck-Dogern in Germany. © 2012 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Department of Civil Engineering, Sebelas Maret University Keywords: hy

10、draulic structure, concrete, concrete technology, durability, maintenance, repair concrete, repair technology, monitoring * Corresponding author. E-mail address: sekretariat-bt@imb.kit.edu Available online at www.scie

11、ncedirect.com© 2013 The Authors. Published by Elsevier Ltd. Open access under CC BY-NC-ND license. Selection and peer-review under responsibility of Department of Civil Engineering, Sebelas Maret University24 Haral

12、d S. Müllera et al. / Procedia Engineering 54 ( 2013 ) 22 – 38 are separated by piling, were not possible in the present case due to limited accessibility and space within the cave (height x width m x 12 m)

13、. Thus, a new construction concept had to be developed that allowed for the installation of the cofferdams in the flowing water upstream and downstream of the construction site perpendicular to the flow direction over

14、 the clear width of the cave. The entire discharge was channeled over the two flood relief lines. Their water intake and outlet parts were embedded into the cofferdams. The unique characteristic of the concept is base

15、d on the challenging condition that the construction of the cofferdams as massive and tight concrete elements was performed in the flowing watercourse. Since the established procedures for the construction with underw

16、ater concrete in stagnant water could not be applied, a special procedure was developed in close cooperation with the Institute for Water and River Basin Management (IWG) at the Karlsruhe Institute of Technology (KIT),

17、 which is based on a combination of prepacked concrete and underwater concrete. Figure 1. Sketch of the structure of the hydro power plant (longitudinal section, without hydraulic components) with the functional eleme

18、nts cofferdam, flood relief line, barrage and platform with valve chamber In this procedure a bulk of rough, crushed rock material (maximum aggregate size 150 mm) is placed on the river bed after it has been cleared fr

19、om gravel and loose rocks and cleaned from sediment by water jetting. The so called prepacked assembly leads to a significantly reduced flow velocity of the river water in the hollow spaces in the resulting grain stru

20、cture. The aim of the approach is to reduce the flow velocity of the water so much that mortar can be filled between the prepacked rock material without being washed out before hardening. The flow velocity can be even

21、 more decreased if a geotextile (e. g. jute) is applied on the shoulders of the dam, which is in addition loaded with sandbags or with a bulk of small-grained gravel (see Figure 2). Afterwards a flowable, hardly segreg