Sổ tay kết cấu thép - Section 14

... of the deck.) A check of a 750-ft span for twoalternate designs, one with a 5-ft constant-depth rib and 12.5-ft-deep tie and the other witha 10-ft-deep rib and 4-ft-deep tie, showed that the latter ... BRIDGES14.13FIGURE 14. 2 Details of New River Gorge Bridge. 14. 1 4SECTION FOURTEENFIGURE 14. 3BAYONNE BRIDGELOCATION: Between Bayonne, N.J., and Port Richmond, Staten Island, N.Y.TYPE: Hal...

Ngày tải lên: 18/10/2012, 16:13

... grades of uncoated, hot-rolled, carbon-steel sheetsand strip intended for structural use.A606 covers high-strength, low-alloy, hot- and cold-rolled steel sheet and strip with en-hanced corrosion resistance. ... referred to as pressure-vessel-quality steels. Generally, a greater numberof mechanical-property tests and additional processing are required for pressure-vessel-quality steel. 1. 8SEC...

Ngày tải lên: 18/10/2012, 16:13

... designed as bearing-type, fully-tightened, loose-to-slip or slip-critical connections (see Art. 5.3). Bearing-type connections have a higher allowable load ordesign strength. Slip-critical connections ... shipping.2.10 BUILT-UP SECTIONSThese are members made up by a fabricator from two or more standard sections. Examplesof common built-up sections are shown in Fig. 2.2. Built-up members are s...

Ngày tải lên: 18/10/2012, 16:13

... action of F can often be difficult to cal-culate. Computations may be simplified,however, with the use of Varignon’s theo-rem, which states that the moment of the re-sultant of any force system about ... forces doesnot apply.)A free-body diagram of a portion of the truss to the left of section AA is shown in Fig.3.7b). The internal forces in the truss members cut by the section must balance...

Ngày tải lên: 18/10/2012, 16:13

... any section due to loads on the archyϭvertical ordinate of section measured from immovable hinge 4. 4SECTION FOURIϭmoment of inertia of arch cross sectionAϭcross-sectional area of arch at the sectionEϭmodulus ... determined, the stresses at any section of the arch can be foundby application of the equilibrium laws (Art. 4.4).Circular Two-Hinged Arch Example. A circular two-hinged arch...

Ngày tải lên: 18/10/2012, 16:13

... E7016-X,E7018-XAWS A5.17 or A5.23§F7XX-EXXXF7XX-EXX-XXAWS A5.18ER70S-XAWS A5.20or A5.29§E7XT-X(ExceptϪ2,Ϫ3,Ϫ10,Ϫ13, 14, ϪGS)E7XTX-XA572 grades 60 and 65 AWS A5.5§E8016-X, E8015-XE8018-XAWS A5.23§F8XX-EXX-XXAWS ... 50E70XXE70XX-XF7XX-EXXX orF7XX-EXX-XXAWS A5.18ER70S-XE7XT-X(ExceptϪ2,Ϫ3,Ϫ10,Ϫ13, 14, ϪGS)E7XTX-XXA572 grade 42 and 50, andA588‡ (4 in. and under)AWS A5.1 or A5.5§E7015, E7016,E7018,...

Ngày tải lên: 18/10/2012, 16:13

... finishesAsphalt block (2-in),1⁄2-in mortar 30Cement finish (1-in) on stone-concrete 32fillCeramic or quarry tile (3⁄4-in) on1⁄2-in 16mortar bedCeramic or quarry tile (3⁄4-in) on 1-in 23mortar bedFrame ... 19Terrazzo (1-in) on stone-concrete fill 32Terrazzo (1-in), 2-in stone concrete 32Wood block (3-in) on mastic, no fill 10Wood block (3-in) on1⁄2-in mortar base 16Floors, wood-joist (no plaster) d...

Ngày tải lên: 18/10/2012, 16:13

... 2(184.6)ϭ1,591 kip-inϭ132.6 kip-ftϽ277.5 kip-ftThe W21ϫ50 does not have adequate capacity. Therefore, trials to find the lowest-weightlarger size must be continued. This trial-and-error process can ... lightest-weight sectionwith␾Mpexceeding 143 .4 kip-ft and with potential capacity to sustain the large positivemoment in the backspan is a W18ϫ35. Table 7.2 lists section properties needed fo...

Ngày tải lên: 18/10/2012, 16:13

... expensive normal-weight concrete may beused instead of lightweight concrete. Therefore, the two options that are frequently consid-ered for a 2-hour-rated, noncellular floor-deck system are 31⁄4-in lightweight ... Two-hour fire-rated floor systems, with cold-formed steel deck. (a) With lightweightconcrete fill; (b) with normal-weight concrete fill.the metal deck without spray-on fire protection and...

Ngày tải lên: 18/10/2012, 16:13

... static-force method is a single-mode design method, even though long-period structures are influenced by higher-moderesponse, and Ftsimulates the effect of higher-mode response on the earthquake-load ... of the mass matrix. The multidegree-of-freedom equations are coupled.They can be solved simultaneously by a number of methods. However, the single-degree-of-freedom response spectrum method is...

Ngày tải lên: 18/10/2012, 16:13