科威特大学城土方施工方案英

1、CONSTRUCTION METHOD OF SUBSOIL & EARTHWORK Prepared For: STATE OF KUWAITKUWAIT UNIVERSITY CONSTRUCTION PROGRAMConstruction and Maintenance of College of Business and College for WomenPrepared by: Wu Chen Name: Approved by: Name: Sinohydro Corporation Limited Al Hani Construction & Trading Co.CATALOG

2、UE TOC o 1-4 h z u HYPERLINK l _Toc327027192 1.INTRODUCTION PAGEREF _Toc327027192 h 1 HYPERLINK l _Toc327027193 1.1LOCAL CONDITIONS & REGIONAL GEOLOGY PAGEREF _Toc327027193 h 1 HYPERLINK l _Toc327027194 Natural Setting and Climate PAGEREF _Toc327027194 h 1 HYPERLINK l _Toc327027195 Regional Geology

3、PAGEREF _Toc327027195 h 1 HYPERLINK l _Toc327027196 1.2GENERAL SITUATION OF PROJECT PAGEREF _Toc327027196 h 2 HYPERLINK l _Toc327027197 2EARTHWORK (Particular Specifications SECTION 02200) PAGEREF _Toc327027197 h 2 HYPERLINK l _Toc327027198 2.1SOIL CONDITIONS PAGEREF _Toc327027198 h 2 HYPERLINK l _T

4、oc327027199 College of Business PAGEREF _Toc327027199 h 2 HYPERLINK l _Toc327027200 College of Women PAGEREF _Toc327027200 h 2 HYPERLINK l _Toc327027201 2.2EXCAVATION PAGEREF _Toc327027201 h 2 HYPERLINK l _Toc327027202 General Condition for Excavation PAGEREF _Toc327027202 h 2 HYPERLINK l _Toc327027

5、203 Work Amount PAGEREF _Toc327027203 h 3 HYPERLINK l _Toc327027204 Schedule for Excavation Execute PAGEREF _Toc327027204 h 3 HYPERLINK l _Toc327027205 Procedure for Excavation Execution PAGEREF _Toc327027205 h 3 HYPERLINK l _Toc327027206 Storage & Usage for Soil PAGEREF _Toc327027206 h 4 HYPERLINK

6、l _Toc327027207 Construction Flow Table for Excavation PAGEREF _Toc327027207 h 4 HYPERLINK l _Toc327027208 2.3FILLING & COMPACTING PAGEREF _Toc327027208 h 4 HYPERLINK l _Toc327027209 General Condition for Filling & Compacting PAGEREF _Toc327027209 h 4 HYPERLINK l _Toc327027210 Work Amount PAGEREF _T

7、oc327027210 h 4 HYPERLINK l _Toc327027211 Filling & Compactions Executions and Requirements PAGEREF _Toc327027211 h 5 HYPERLINK l _Toc327027212 Construction Flow Table for Filling & Compacting PAGEREF _Toc327027212 h 5 HYPERLINK l _Toc327027213 2.4Reference Standards & Testing PAGEREF _Toc327027213

8、h 5 HYPERLINK l _Toc327027214 3DEWATERING (Particular Specifications SECTION 02201) PAGEREF _Toc327027214 h 6 HYPERLINK l _Toc327027215 4EARTHWORK SUPPORT (Particular Specifications SECTION 02250) PAGEREF _Toc327027215 h 6 HYPERLINK l _Toc327027216 5TERMITE CONTROL (Particular Specifications SECTION

9、 02365) PAGEREF _Toc327027216 h 6 HYPERLINK l _Toc327027217 6SAFETY CONTROL PAGEREF _Toc327027217 h 6 HYPERLINK l _Toc327027218 7QUALITY CONTROL PAGEREF _Toc327027218 h 7 HYPERLINK l _Toc327027219 8TABLE OF EQUIPMENTS & MANPOWER (Table 1 & 2) PAGEREF _Toc327027219 h 7 HYPERLINK l _Toc327027220 Attac

10、hed Sketch 1 PAGEREF _Toc327027220 h 9 HYPERLINK l _Toc327027221 Attached Sketch 2 PAGEREF _Toc327027221 h 10 HYPERLINK l _Toc327027222 Attached Sketch 3 PAGEREF _Toc327027222 h 11 HYPERLINK l _Toc327027223 Attached Sketch 4 PAGEREF _Toc327027223 h 12 HYPERLINK l _Toc327027224 Attached Sketch 5 PAGE

11、REF _Toc327027224 h 13INTRODUCTIONLOCAL CONDITIONS & REGIONAL GEOLOGYNatural Setting and ClimateThe State of Kuwait is situated at the northeastern corner of the Arabian Peninsula. It comprises an area of approximately 17,800 km2 extending between latitudes 28030 and 30005 N and longitudes 46033 and

12、 48030 E.Kuwait is characterized by the predominance of a hot and dry climate. The summer in Kuwait is very hot especially in July and August. The mean temperature during this period varies between 30 and 50. Winter is rather cool especially in January with mean temperature is 12.Rainfall in Kuwait

13、is scanty, totaling approximately 110 mm per year. Another most prevailing climatological characteristic in Kuwait is the frequent dust-storm. The contribution of dust sedimentation of northwestern part of the Arabian Gulf is found to be 1 mm per year. The same thickness of deposition is assumed to

14、be taking place throughout the coastal areas of Kuwait.Pronounced variations in humidity is another common climatological phenomenon in Kuwait. Relative humidity varies from 60.9% in January to 21.5% in June. On the other hand, evaporation is very high and is variable within location and seasons. Th

15、e mean amount of evaporation is 10.3 mm per day.Regional GeologyKuwait lies on the eastern edge of the deep sedimentary basin that forms the Arabian Peninsula, and is underlain by a considerable thickness of sedimentary rocks. In the south of Kuwait, relatively young deposits of the Dibdibba formati

16、on (Upper Miocene to Pleistocene Epochs, approximately 2 to 10 million years old) outcrop at the surface. These deposits are underlain at depth by the Dammam formation (Upper Eocene Epoch, approximately 38 to 42 million years old). The normally intervening deposits of the fars formation are absent e

17、xcept in Northern Kuwait.The Dibdibba formation typically consists of siliceous sands and gravels, with varying amounts of silt and some thin clay and gypsum bands. Cementation is only partial and relatively poor, consisting of calcium carbonate and gypsum. In South Kuwait the recent deposits overly

18、ing the Dibdibba formation consists chiefly of the windblown sand forming sheets and low dune structures. Adjacent to the shoreline calcareous deposits are locally present generally consisting of oolitic and bioclastic sands.The low seasonal rainfall mostly evaporates or percolates into the ground,

19、therefore, little runoff ends to the sea. The influence of evaporation predominates, and the general movement of groundwater is upward. This leads to high concentrations of soluble material near the ground surface generally calcium carbonate, gypsum etc. In North Kuwait gypsum predominates, whereas

20、in the South high concentration of calcium carbonates is encountered near the ground surface.Ref :- J. Al-Sulaimi and A. Mukhopadhyay (2000). “An Overview of the Surface and Near-surface Geology, Geomorphology and Natural Resources of Kuwait”. Earth-Science Reviews 50 (2000).GENERAL SITUATION OF PRO

21、JECTThe scope of main work of the project for Sabah Al - Salem University City - Kuwait University College of Business and College for Women is construction, operation and maintenance for the Mens Campus, the Womens Campus, the Prayer Centre and the Tunnel beneath Landscape between campuses together

22、, and the proprietor is Kuwait Universitys Secretary General. The floor area of project is 67,479 Sq. Meter (included 1,004 Sq. Meter for Tunnel), and the project schedule is 1,222 day (included the dates of preparation for 60 day), dates of maintenance for 730 day.EARTHWORK (Particular Specificatio

23、ns SECTION 02200)SOIL CONDITIONSCollege of Business Womens Campus The subsurface soil at the location of the Womens Campus building is composed generally of layers of sand with silt and sand with clay with occasional layers of poorly graded sand, silty sand and clayey sand. Mens Campus For the locat

24、ion of the Mens Campus building, the subsurface soil is made up generally of layers of sand with silt and silty sand.College of Women Womens Campus The underlying soils at the Womens Campus site are composed generally of layers of sand with silt and silty sand with occasional intervening layers of p

25、oorly-graded sand, silty/clayey sand and sand with trace of clay. Mens Campus For the Mens Campus site, the subsurface soil is made up generally of layers of sand with silt and silty sand with occasional layers of poorly-graded sand and well graded sand with silt.EXCAVATIONGeneral Condition for Exca

26、vationThe existing ground level for each area is the top level of the raft, and that is +33.00m for the Mens Campus, +35.00m for the Womens Campus and +35.00m for the Oasis between those. Excavation work of the project is included the excavated for raft and Blinding, excavated for the Tunnel (refer

27、to Attached Sketch 1 & 2). The thickness for raft without foundation is 870mm (750mm raft, 70mm blinding and 50mm protection screen), The respective thickness for the structure foundation of column, wall, elevator shaft, staircase, tank and etc. is 1120mm, 1320mm, 1520mm, 1720mm, 1920mm, 2850mm, 337

28、0mm and so on (thickness of the structure foundation, 70mm blinding and 50mm protection screen). Work AmountITEMQty.(m)Qty. for Each Part(m)Raft & BlindingExpanded ExcavationMens Campus28,95625,8463,110Womens Campus40,51336,4834,030Tunnel1,561891670Total71,03063,2207,810Schedule for Excavation Execu

29、te Excavation ProgramRefer to the project plan program, the schedule for excavation as below:For Womens Campus is from 16th Jun. 2012 to 5th Oct. 2012, for Mens Campus is from 16th Jun. 2012 to 28th Sep. 2012, for Tunnel is from 17th Jan. 2014 to 25th Jan. 2014.Sequence and Grouping for ExcavationRe

30、fer to the approved construction sequence plan of raft & foundation, we organize construction and provide next process as follow for each intact zone in time. Refer to the project plan program for grouping of raft construction, the scene is divided into 4 groups of the Womens Campus and the Mens Cam

31、pus for excavation, namely the Mens Campus Group A, the Mens Campus Group B, the Womens Campus Group A, the Womens Campus Group B. Underground excavation are not group at temporary. The sequence of excavation is according to the Attached Sketch 4 & 5.Procedure for Excavation ExecutionBefore excavati

32、on, the surveyor survey terrain of the site, compile the report of survey and the drawing of terrain in the site (drawing scale 1:500). And submit these to Engineer to record data and keep in the archives;When excavation, setting out at first. The 870mm of thickness for raft (keep 100mm to protect s

33、ubsoil) is excavated by excavator or bulldozer, and carry out the soil by dumper. The limited line of excavation is not exceed less than 2 meter from outside of building that provided the space for the follow up works. The side slope is 1:2 and it can changed to provide the side stable after accordi

34、ng to the actually situation in the site;After excavate of raft, setting out again. The grader strip the protection layer about 100mm thickness, the loader load operation and the dumper carry out the soil;After survey setting out the layout of structure foundation, it is going on excavate for the st

35、ructure foundation of column, wall, elevator shaft, staircase, tank and so on (Refer to the Attached Sketch 3). The small foundation is excavate by JCB, the loader load operation, the dumper carry out soil;The side slope for single foundation is 1:1 and finished by manual work, the side slope for th

36、e intersection of the structure foundation is refer to the approved shop drawing. The subsoil is compacted by vibrating roller or plate compactor and the degree of compaction is not less than 95% (ASTM-1557).Storage & Usage for SoilThe soil is loaded, transported and stored to the Engineer directed

37、position. According to the average high for 4 meter and coefficient of volumetric expansion for 1.6, it is calculated about 28,412 Sq. Meter for storage area. The material is used for backfilling as follow up works.Construction Flow Table for ExcavationPrepared for EnterpriseSetting out by SurveySet

38、ting out by SurveyExcavation for Structure FoundationCarry out of SoilCompaction for the SubsoilCompaction for the Subsoil of Structure FoundationExcavation for RaftCarry out of SoilCarry out of SoilFILLING & COMPACTINGGeneral Condition for Filling & CompactingThe filling work is started from outsid

39、e of the retaining wall of building (around basement up to required level), the filling level is from the level below the raft to the bottom of Landscape and Oasis in ground level (the detail level is refer to the detail drawing of Landscape & Oasis Site Detail for each structure). The main work are

40、a for filling is included the Mens Campus, the Womens Campus and the Tunnel beneath the Oasis connected the campuses.Work AmountITEMQty.(m)Qty. for Each Part(m)Outside of Retaining WallBelow the Landscape & OasisMens Campus22525178504675Womens Campus411202500016120Tunnel40004000-Total676454685020795

41、Filling & Compactions Executions and RequirementsThe Filling and Compacting Works around basement up to required level is started after the Masonry Works outside of the retaining wall finished, and the another is started after the filter fabric above the top slab of basement finished;The materials f

42、or fill and backfill (the materials for fill in depressed area of sub-station is excluded) shall be as herein-before specified, obtained from the required excavation on site (shall be approved by the Engineers Representative prior to use) or from borrow sources;Placing fill materials in horizontal l

43、oose layers in such manner as to produce a uniform thickness of material. Placement shall start in the deepest area and progress approximately parallel to the finished grade. Thickness of layers before compacting shall be refer to the opinion from Engineer and Technology Specification;Compact each l

44、ayer of fill with equipment to achieve the following percentages of maximum density at optimum moisture when tested in accordance with ASTM D 1557 as follow:LOCATION% MAX.DENSITYUnder Paved Areas & Kerbs95Under Slabs on Grade98General Grading90Construction Flow Table for Filling & CompactingPrepared

45、 for EnterpriseCharging, sharing around basement for each layerCompactingCharging, sharing below the Landscape & OasisCompacting for each layerReference Standards & TestingThe main testing for earthwork in project is included two parts of Testing of Materials and Testing of Sub-grade and Fill layers

46、. All the reference standards in the table as follow:Standard No.ContentASTM D422/AASHTO T88Mechanical AnalysisASTM D4318/AASHTO T90Plasticity Index DeterminationASTM D698Standard Test Method for Laboratory CompactionASTM D1556Standard Test Method for Density of Soil in Place by the Sand-Cone Method

47、ASTM D1557Moisture-Density Curve DeterminationASTM D2167Standard Test Method for Density and Unit Weight of Soil in Place by the Rubber Balloon MethodASTM D2922Standard Test Method for Density of Soil and Soil-Aggregate in Place by Nuclear MethodsDEWATERING (Particular Specifications SECTION 02201)W

48、ith refer to the Subsurface Investigation from tender by INCO LAB, we will know that the ground water level is below about 34 meter from the deepest foundation subsoil of the College of Business and 78 meter from the deepest foundation subsoil of the College of Women. Also according to the actually

49、situation in the site and the form type for the foundation, this is not arranged the well and trench to dewatering.EARTHWORK SUPPORT (Particular Specifications SECTION 02250)With refer to the actually situation and technology specification, when excavation and filling works is going on that just kee

50、p care about the side slope is stable to provide the work as follow to finished.TERMITE CONTROL (Particular Specifications SECTION 02365)With refer to the detail method from profession subcontract.SAFETY CONTROLAll the works that included work inside site, temporary road layout, transport, piling up

51、, caution and etc. need to comply with the approved safety plan;The width of the temporary road in site is not less than 5 meter, and compacted to keep leveling; the width of the transport road out site is not less than 6 meter, and compacted to keep leveling before operation. All the road shall be

52、maintain in time, keep fine condition and setting up deceleration strip;This is setting up the necessary isolated measures in construction area, the irrelevant construction personnel shall not be allowed inside, and the related construction personnel must wear necessary safety equipages before insid

53、e the construction area;When excavation at the position of the foundation for column, wall, elevator shaft, staircase and so on, the personnel must get down and up by the exclusive use ladders and steps;Setting up enough warning board and direction board is according to the actually situation in the

54、 site. The warning board for safe operation inside site, safety protection notice, safety notice for piling up area etc. and the direction board for construction area, transport road etc. shall be clearly, striking, definitely and visually.QUALITY CONTROLAll the work procedures shall be strictly executed ref