标准规范下载简介

YD／T 5131-2005 移动通信工程钢塔桅结构设计规范（英文版）.pdf

following formula

2The space of anchor bolt should not be less than 4d (d is the diameter of anchorbolt). 3Thedesign of anchor bolt shall consider the practical situations of installation and regulation of upper steel structure and construction of reinforced concrete foundation; the hole of anchor bolt on base plate of pylon shall be enlarged for adjustment during installation,however,after installing and regulating,the thick gasket shall be welded on it to meet the anchorage requirement. 4When settheclearanceof regulatingnutbetweentowerbaseplate andbasesurface,the space shouldbe2timesofdiameterofanchorbolt

(a)Uplift depth of anchor plate h

(b)Uplift depth of anchor plate h,

【工艺标准】振冲地基施工工艺标准Fig. 7.4.4Uplift stability calculation of guy anchor plate base

F·sino≤G+G Y1 Y:

AppendixAInternalForceCalculationforFlangePlate

A.o.1The accurate calculation for internal force of flange plate may be conducted byusing finite element method according to supporting conditions of theplate. A.0.2The internal force of flange plate may be calculated referring to the following simple method. 1Stress diagramofflangeplate (Fig.A.0.2):

Where,A bending moment coefficient,adopted according totheTableA.0.2; Nmx maximumtensionofflangeplatebolt; Mmax maximumbendingmomentofbaseplate offlangeplateperunitwidth TableA.0.2Bending moment coefficientβ

moment of base plate of flange plate per unit width Table A.0.2Bending moment coefficientβ

ppendix BTower Base Plate Calculation for Common Angle Steel Towe

Generally,the column foot of angle steel tower is connected by square base plate with stiffening rib and the design of tower base pate may be calculated according to the following formula (Fig.B.0.1).

3T·Yma V 1.146minf

ere,T designvalueoftensionactingonthetowerbaseplate(N); Ymax maximumdistancebetweencenterof thefoundation boltandmain anglesteel (mm); 6 minimumwidthinallsectionsofbaseplate(mm)

AppendixCUpliftStabilityCalculationofBase

Uplift StabilityCalculationof Ba andAnchorPlateBase

AppendixDSpecificationsofCommonGalvanizedStrandedWire

Appendix E Explanation of Wording in This Code

GeneralProvisions

GeneralProvisions

2Termsand Symbols

BasicDesignProvisions

sicDesignProvisio

3.1Design Principles

3.1Design Principles

3.3Material Selection

4Structure Calculation

4StructureCalculation

4.4Guyed Steel Mast

4.4 Guyed Steel Mast

MemberandNodeConnection

MemberandNodeConnection

5.2MemberDesign

5.2MemberDesign

5.3Node Connection Design

5.3.3In weld connection,different design strengths are adopted according to different quality levels.

5.4Connection Calculation of Flange Plat

5.5CalculationofTowerBasePlate

StructureandProcessTechnicalRequirements

Structure andProcess TechnicalRequirements

6.1GeneralRequirements

6.2NodeConnection

1Such requirement is provided in order to ensure that the binding ratio of internal and external anglesteelataconnectionnodeisnotlessthan75%. 2If the space between major member and web member is too large,it is disadvantageous to rigidity outside gusset plate surface; if too small,it is not convenient for construction. 3When the angle a between the gusset plate edge and the member axis is less than 15°,the gussetplate is narrow and long,disadvantageous forrigidity outsidegussetplate surface. 4The material is saved and stress eccentricity is reduced due to oversize thickness of gusset plate oy increasing rigidity of gusset plate rims (or adding stiffening plate)

SoGrade Cboltis adoptedfor shearresistance,butmeanwhilethis codeimproves requirement ofbolt diametertoreduceslippageinshearresistanceof GradeCbolt. 6.3.6This regulation is to prevent loose nuts from dropping 6.3.8This regulation is to ensure that towerbase plate bears stress uniformly,and in favor of bearing capacity offoundation anchorbolts. 6.3.9Wateriseasytoaccumulateattowerfeet,whichwill seriouslyrustfoundationanchorboltsand towerbaseplate,soprotectionreinforcementis necessary

Foundation and Base

7.1GeneralRequirements

General Requiremen

第一卷 北京地铁某标段区间施工组织设计2.doc7.2Foundation Calculation

differencebetweenneighboringfoundations shallbe checkedunderdifferentfoundations

73BaseDesign

CECS251：2009 钢水罐砌筑工程施工及验收规程及条文说明.pdfAppendixAInternalForceCalculationforFlangePlate

ppendix BTower Base Plate Calculation for Common Angle Steel Towe

AppendixDSpecificationsofCommonGalvanizedStrandedWire