基础工程设计任务书 (翻译)

《Foundation Engineering》Project design assginmentTitle：The design of foundation production drawings for double-column-pier bored pileTime：from 12th/December to 16th/December one weekMajor：Civil engineeringClass ：Number：Name ：Reference teacher（sign）：Department lead （sign）：一、The content and requirement of design1．Draw up the substructure styles and separately dimensions of the bridge, according to the superstructure styles , geology and hydrology data of given bridge .2．The calculation of pier1)Loads calculation (the dead loads of superstructure , live loads calculation , cap beam ,self weight , self weight of pier and loads composition)2)The calculation of reinforcing bars and stress check3．The calculation of drive cast-place-pile1)calculate loads2)calculate the length of pile3)calculate the internal force of pile4)the calculation of section reinforcing bars of pile and strength calculation5)check up the longitudinal lateral displacement at the top of pier4．Draw ordinary structure graph or pile reinforcement graphRequirement :with paper No.3 ,clean ,handwriting legible ,have complete mark dimension picture frame and picture sign attachment notion二、Design initiate material1．Superstructure：Three-span prestressed concrete simple T-beaml=25.00m(mid-pier distance)1)Standard span :bl=24.50m(mid-support distance)calculate span:jthe whole length of main beam : L=24.96m (main beam pre-length)(the end of the number of student is 0-4)l=30.00m (mid-pier distance)2)Standard span :bl=29.50m(mid-support distance)calculate span:jthe whole length of main beam : L=29.96m (main beam pre-length)(the end of the number of student is 5-9)2．Clearance upper the bridge：clearance—7+2*1.0m（odd numbers）clearance—9+2*1.0m（even numbers）3．Support：common slab rubber bearing（fixed），size：0.047*0.30*0.50（m） Four fluorine sliding rubber bearing(sliding support) size：0.053*0.30*0.50（m），the friction ratio of support is f=0.054．Design loads ：road-class Ⅱmotor loads ，Crowd loads 3.0kN/m 25．The type of pier ：column ；two column bent cap with over hanging caping beam6．materials ：（1）concrete ：bent cap ：C30；pier and foundation piles ：C25。

（2）steel ：main-steel HRB335，stirrup –steel R235。

7．Added geological materials and relevant reference design drawings 。

The elevation of riverbed is 78.32m ，the top of pile is flush with riverbed,the elevation of general erosion-line is 75.94 m ，and the local scour-line is 73.62 m 。

Geography near the bridge is not flat ，with various geomorphic units 。

The formation of ground-storey is legistiate,and the height of underground water embeds deeply ，which has no influence on engineering structure ，there ’s no bad geographic phenomenon ,which caters to the good construction sites 。

Ⅰloam ：slightly dense ，soil is uniform ，but distributes unstably with bad structure 。

Thickness is 2m 。

Ⅱ clay ：gradation of particles is uneven, compressive property is midst,with distributes unstably , as well as higher strength 。

thickness is 5m 。

Ⅲ mid-coarse sand ：with uniform soil 。

The layer is stale with good engineering property 。

thickness is 6m 。

Ⅳ clay ：which is elastic with even soil property ，the stable storey, as well as proper compressive nature. good engineering property 。

thickness is 10m 。

（only for odd numbers ）The foundation soil is gravel of intermedium density, coefficient ratio of foundation soil m ＝10000 kN/m 4；standard frictional resistance of foundation soil kPa q k 60=；bearing capacity of foundation ao [f ]＝430 kPa,internal frictional angle 020=ϕ，gravity of soil 3/80.11m kN =γ（flotage considered ）(only for double numbers ）三、Documents and charts after the completion of the design1. The part of calculation manualCompile a calculation manual. Write design calculation manual using A4 papers. All manual should satisfy the requirements of complete calculation processes、clear calculation steps、brief words signs、drawing specifications and layout stylish.2. The part of drawingsDraw drawings of reinforcement using A3 papers by hand or AutoCAD. And correct expression、reasonable layout and complete sizes.In order of manual is ahead and drawings are back to bind in a volume, and handing over to teacher for reviewing.四、The progress of arrangement1．Monday: familiar with the design data,complete the comparation among all thealternatives and select the best project2．Tuesday：complete the calculation of loads and load combination 3．Wednesday: complete the design of pier and pile4．Thursday：drawing5．Friday：arrange and hand over the designing manual and the drawing,then turn in them altogether六、Main reference materials1．《General code for design of Highway Bridges and Culverts》（JTG D60---2004）2．《Design Manual of Highway Bridges and Culverts》（1994）3．《Bridges and Culverts calculation example set》4．《Reinforced concrete design》5．《Bridge engineering》6．《Foundation engineering》7．《Code for Design of Ground Base and Foundation of Highway Bridge and Culverts》（JTG D63---2007）8．《Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts》（JTG D62---2004）七、the binding turns for the course design1. front cover2. design assignment3. the table of grade judgment4. contents5. main body6.designing summarize and improve opinion7.the reference materials8.drawing or appendix。