32
THE PROJECT FOR FLOOD PROTECTION AND DRAINAGE IMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH (PHASE II) Page 1 of 3 Examination for supporting of top slab form works Unit weight of Concrete : ρc …………. 25.0 Working load : Ww ……….. 2.5 Dead load of forms : Wf ………… 0.5 Load of Internal supporting : Ws ……….. 0.5 Material scription fication nding/tensile stress llowable shearing stress Steel SS 400 163 93 STK 500 236 134 Timber Fir wood 13.2 1.0 Plywood 16.1 1.0 it shall be within 1-2mm Here, δa = 3.0 mm is chosen. 8,800 Plywood……………..……… 5,500 Steel material ………………… ### Plywood : 12 mm : 48.6 x 2.4 mm Square steel pipe-60 x 60 x 2.3 : 60 x 60 mm Thickness of Concrete : 450 mm Interval of steel pipe : 300 mm : 800 mm : 800 mm Description Calculation formula Loa 25 x 0.45 11 11.25 + 2.5 13 0 13.75 + 0.5 14 5.1 Design condition 5.1.1 Load condition kN/m 3 kN/m 2 kN/m 2 kN/m 2 5.1.2 Allowable stress σa N/mm 2 τa N/mm 2 t 16mm t 12mm Allowable deflection δaNormal case shall be 2-3mm, in case of external 5.1.3 Young's modulus E TimberFir wood…………. (N/mm 2 ) (N/mm 2 ) (N/mm 2 ) 5.3 Examination for bottom forms Round steel pipe φ48.62.4 Supporting span of square timber Supporting span of steel pipe 5.3.1 Working load kN/ Concrete load Wc Working load Ww Total1= Wc + Ww Dead load of Forms Total2= Wc + Ww + Wf

Form Support(t450)

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Page 1: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 1 of 3

Examination for supporting of top slab form works

Unit weight of Concrete : ρc …………. 25.0

Working load : Ww ……….. 2.5

Dead load of forms : Wf ………… 0.5

Load of Internal supporting : Ws ……….. 0.5

Material Description SpecificationAllowable bending/tensile stress Allowable shearing stress

SteelSS 400 163 93

STK 500 236 134

TimberFir wood 13.2 1.0Plywood 16.1 1.0

it shall be within 1-2mmHere, δa = 3.0 mm is chosen.

8,800

Plywood……………..……… 5,500

Steel material ………………… 200,000

Plywood : 12 mm: 48.6 x 2.4 mm

Square steel pipe-60 x 60 x 2.3, STK : 60 x 60 mmThickness of Concrete : 450 mmInterval of steel pipe : 300 mm

: 800 mm: 800 mm

Description Calculation formulaLoad

25 x 0.45 11.25 2.50

11.25 + 2.5 13.75 0.50

13.75 + 0.5 14.25

5.1 Design condition5.1.1 Load condition

kN/m3

kN/m2

kN/m2

kN/m2

5.1.2 Allowable stress

σa (N/mm2) τa (N/mm2)t 16mm≦

t 12mm≦

*Allowable deflection δa:Normal case shall be 2-3mm, in case of external appearance to be conspicuous,

5.1.3 Young's modulus E

Timber(Fir wood)…………. (N/mm2)

(N/mm2)

(N/mm2)

5.3 Examination for bottom forms

Round steel pipe φ48.6x2.4

Supporting span of square timber Supporting span of steel pipe

5.3.1 Working load

(kN/m2)Concrete load Wc

Working load Ww

Total(1)= Wc + WwDead load of Forms Wf

Total(2)= Wc + Ww + Wf

Page 2: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 2 of 3

Sectional dimension for width per meter is as follows.

--------- = 24,000 6

:I = --------- = 144,000 12

Working load for sheathing board (width per meter) is w = 13.75 x 1000 / 1000 = 13.75 (N/mm)

Interval of batten is 300Sheathing board is calculated as uniform load with 3 span continuous beam

--------- = 123,750 (N.mm)10

M

--------- = 5.2 σa = 16.1 OK ≦ ⇒Z

--------- = 1.0 (mm) δa = 3mm OK ≦ ⇒

348

3,830

93,200 An interval of batten 300 mmWorking load to batten (per one piece)

w = 13.75 x 300 / 1000 = 4.1 (N/mm)Maximum interval of sleeper as supporting p 800 mm

--------- = 330,000 (N.mm)8

M

Bending stress ---------- = 86 σa = 236 OK ≦ ⇒Z

5.3.2 Examination for sheathing board

bh2

Section modulus :Z = (mm3/m)

bh3

Moment of Inertia of area (mm4/m)

mmである。

wl2

Bending moment :M=

Bending stress :σ= (N/mm2)

wl4

Deflection :δ= 137.6EI

5.3.3 Examination for BattenRound steel pipe(φ48.6x2.4,STK 500)shall be used.

Sectional area      :A= (mm2)

Section modulus     :Z= (mm3)

Moment of inertia of area :I= (mm4)

wl2

Bending moment :M=

:σ= (N/mm2)

Page 3: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 3 of 3

wlShearing force ---------- = 1,650 (N)

2

Shearing stress ---------- = 7.1 (N) τa = 134 OK ≦ ⇒A

Deflection ---------- = 1.2 (mm) δa = 3mm OK ≦ ⇒

Sectional area 517   

:Z = ---------- = 9,440 6

:I = ---------- = 283,000 12

Load distribution width of sleeper 800 (mm)Working load to sleeper (per one piece)

w = 14.25 x 800 / 1000 = 11.40 (N/mm) An interval of forms as supporting point 800

---------- = 912,000 (N.mm)8

M

Bending stress ---------- = 96.6 σa = 163 OK ≦ ⇒Z

wlShearing force ---------- = 4,560 (N)

2

Shearing stress ---------- = 13.2 (N) τa = 93 OK ≦ ⇒A

Deflection ---------- = 1.1 (mm) δa = 3mm OK ≦ ⇒

:S=

1.5S:τ=

5wl4

:δ= 384EI

5.3.4 Examination for sleeperSquare steel pipe(□-60x60 x 2.3)shall be used.

:A= bh   = (mm2)

bh2

Section modulus (mm3)

bh3

Moment of Inertia of area (mm4)

d=

mmである。

wl2

Bending moment :M=

:σ= (N/mm2)

:S=

1.5S:τ=

5wl4

:δ= 

Page 4: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 4 of 3

384EI

Page 5: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 1 of 18

The Structural calculation data

of the forms and supporting for UGR-5

KUBOTA CONSTRUCTION CO., LTD.

Page 6: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 2 of 18

Examination for supporting of top slab form works

Unit weight of Concrete : ρc …………. 25.0

Working load : Ww ……….. 2.5

Dead load of forms : Wf ………… 0.5

Load of Internal supporting : Ws ……….. 0.5

Material Description SpecificationAllowable bending/tensile stress Allowable shearing stress

SteelSS 400 163 93

STK 500 236 134

TimberFir wood 13.2 1.0Plywood 16.1 1.0

it shall be within 1-2mmHere, δa = 3.0 mm is chosen.

8,800

Plywood……………..……… 5,500

Steel material ………………… 200,000

Plywood t : 12 mm: 48.6 x 2.4 mm

Thick timber plate t=20mm x 2pcs t : 40 x 95 mmThickness of Concrete : 450 mmInterval of steel pipe l : 300 mm

La : 750 mmLb : 850 mm

Description Calculation formulaLoad

25 x 0.45 11.25

2.50

11.25 + 2.5 13.75

0.50

13.75 + 0.5 14.25

5.1 Design condition5.1.1 Load condition

kN/m3

kN/m2

kN/m2

kN/m2

5.1.2 Allowable stress

σa (N/mm2) τa (N/mm2)t≦16mm

*Allowable deflection δa:Normal case shall be 2-3mm, in case of external appearance to be conspicuous,

5.1.3 Young's modulus E

Timber(Fir wood)…………. (N/mm2)

(N/mm2)

(N/mm2)

5.3 Examination for bottom forms

Round steel pipe φ48.6x2.4

Supporting span of square timber Supporting span of steel pipe

5.3.1 Working load

(kN/m2)Concrete load Wc

Working load Ww

Total(1)= Wc + WwDead load of Forms Wf

Total(2)= Wc + Ww + Wf

Page 7: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 3 of 18

Sectional dimension for width per meter is as follows.

--------- = 24,000 6

:I = --------- = 144,000 12

Working load for sheathing board (width per meter) is w = 13.75 x 1000 / 1000 = 13.75 (N/mm)

Interval of batten is 300 mm.Sheathing board is calculated as uniform load with 3 span continuous beam

--------- = 123,750 (N.mm)10

M

--------- = 5.2 σa = 16.1 OK ≦ ⇒Z

--------- = 1.0 (mm) δa = 3mm OK ≦ ⇒

348

3,830

93,200 An interval of batten 300 mmWorking load to batten (per one piece)

w = 13.75 x 300 / 1000 = 4.1 (N/mm)Maximum interval of sleeper as supporting p 850 mm

--------- = 372,539 (N.mm)8

M

Bending stress ---------- = 97 σa = 236 OK ≦ ⇒Z

5.3.2 Examination for sheathing board

bh2

Section modulus :Z = (mm3/m)

bh3

Moment of Inertia of area (mm4/m)

wl2

Bending moment :M=

Bending stress :σ= (N/mm2)

wl4

Deflection :δ= 137.6EI

5.3.3 Examination for BattenRound steel pipe(φ48.6x2.4,STK 500)shall be used.

Sectional area      :A= (mm2)

Section modulus     :Z= (mm3)

Moment of inertia of area :I= (mm4)

wl2

Bending moment :M=

:σ= (N/mm2)

Page 8: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 4 of 18

wlShearing force ---------- = 1,753 (N)

2

Shearing stress ---------- = 7.6 (N) τa = 134 OK ≦ ⇒A

Deflection ---------- = 1.5 (mm) δa = 3mm OK ≦ ⇒

Sectional area 3,800   

:Z = ---------- = 60,167 6

:I = ---------- = 2,857,917 12

Load distribution width of sleepe 850 (mm)Working load to sleeper (per one piece)

w = 14.25 x 850 / 1000 = 12.11 (N/mm)

An interval of forms as supporting point 750 mm.

---------- = 851,660 (N.mm)8

M

Bending stress ---------- = 14.2 σa = 16.1 OK ≦ ⇒Z

wlShearing force ---------- = 4,542 (N)

2

Shearing stress ---------- = 1.8 (N) τa = 93 OK ≦ ⇒A

Deflection ---------- = 0.1 (mm) δa = 3mm OK ≦ ⇒

:S=

1.5S:τ=

5wl4

:δ= 384EI

5.3.4 Examination for sleeperThick timber plate(□-40x95)shall be used.

:A= bh   = (mm2)

bh2

Section modulus (mm3)

bh3

Moment of Inertia of area (mm4)

d=

wl2

Bending moment :M=

:σ= (N/mm2)

:S=

1.5S:τ=

5wl4

:δ= 384EI

Page 9: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 5 of 3

Unit weight of Concrete : ρc …………. 25.0

Working load : Ww ……….. 2.5

Dead load of forms : Wf ………… 0.5

Load of Internal supporting : Ws ……….. 0.5

Material Description SpecificationAllowable bending/tensile stress Allowable shearing stress

SteelSS 400 163 93

STK 500 236 134

TimberFir wood 13.2 1.0Plywood 16.1 1.0

it shall be within 1-2mmHere, δa = 3.0 mm is chosen.

8,800

Plywood……………..……… 5,500

Steel material ………………… 200,000

Plywood t : 12 mm: 48.6 x 2.4 mm

Square timber□-100 x 100 t : 100 x 100 mmThickness of Concrete : 450 mmInterval of steel pipe l : 300 mm

La : 800 mmLb : 800 mm

Description Calculation formulaLoad

25 x 0.45 11.25

2.50

11.25 + 2.5 13.75

0.50

13.75 + 0.5 14.25

I-Examination for Form Work1.1 Design condition1.1.1 Load condition

kN/m3

kN/m2

kN/m2

kN/m2

1.1.2 Allowable stress

σa (N/mm2) τa (N/mm2)t≦16mm

t≦12mm

*Allowable deflection δa:Normal case shall be 2-3mm, in case of external appearance to be conspicuous,

1.1.3 Young's modulus E

Timber(Fir wood)…………. (N/mm2)

(N/mm2)

(N/mm2)

1.2 Examination for bottom forms

Round steel pipe φ48.6x2.4

Supporting span of square timber Supporting span of steel pipe

1.2.1 Working load

(kN/m2)Concrete load Wc

Working load Ww

Total(1)= Wc + WwDead load of Forms Wf

Total(2)= Wc + Ww + Wf

Page 10: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 6 of 3

Sectional dimension for width per meter is as follows.

--------- = 24,000 6

:I = --------- = 144,000 12

Working load for sheathing board (width per meter) is w = 13.75 x 1000 / 1000 = 13.75 (N/mm)

Interval of batten is 300Sheathing board is calculated as uniform load with 3 span continuous beam

--------- = 123,750 (N.mm)10

M

--------- = 5.2 σa = 16.1 OK ≦ ⇒Z

--------- = 1.0 (mm) δa = 3mm OK ≦ ⇒

348

3,830

93,200 An interval of batten 300 mmWorking load to batten (per one piece)

w = 13.75 x 300 / 1000 = 4.1 (N/mm)Maximum interval of sleeper as supporting p 800 mm

--------- = 330,000 (N.mm)8

M

Bending stress ---------- = 86 σa = 236 OK ≦ ⇒Z

1.2.2 Examination for sheathing board

bh2

Section modulus :Z = (mm3/m)

bh3

Moment of Inertia of area (mm4/m)

mmである。

wl2

Bending moment :M=

Bending stress :σ= (N/mm2)

wl4

Deflection :δ= 137.6EI

1.2.3 Examination for BattenRound steel pipe(φ48.6x2.4,STK 500)shall be used.

Sectional area       (mm2)

Section modulus      (mm3)

Moment of inertia of area (mm4)

wl2

Bending moment :M=

:σ= (N/mm2)

Page 11: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 7 of 3

wlShearing force ---------- = 1,650 (N)

2

Shearing stress ---------- = 7.1 (N) τa = 134 OK ≦ ⇒A

Deflection ---------- = 1.2 (mm) δa = 3mm OK ≦ ⇒

Sectional area 10,000   

:Z = ---------- = 166,667 6

:I = ---------- = 8,333,333 12

Load distribution width of sleeper 800 (mm)Working load to sleeper (per one piece)

w = 14.25 x 800 / 1000 = 11.40 (N/mm)

An interval of forms as supporting point 800

---------- = 912,000 (N.mm)8

M

Bending stress ---------- = 5.5 σa = 13.2 OK ≦ ⇒Z

wlShearing force ---------- = 4,560 (N)

2

Shearing stress ---------- = 0.7 (N) τa = 1 OK ≦ ⇒A

Deflection ---------- = 0.8 (mm) δa = 3mm OK ≦ ⇒

:S=

1.5S:τ=

5wl4

:δ= 384EI

1.2.4 Examination for sleeperSquare steel pipe(□-100x100 x 2.3)shall be used.

:A= bh   = (mm2)

bh2

Section modulus (mm3)

bh3

Moment of Inertia of area (mm4)

d=

mmである。

wl2

Bending moment :M=

:σ= (N/mm2)

:S=

1.5S:τ=

5wl4

:δ= 

Page 12: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 8 of 3

384EI

II-Examination for Supporting

Page 13: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 9 of 3

支保工の検討

25.0 2.50.50.5

材種 種別 仕様許容せん断応力度

鋼材SS 400 163 1663 93 949

STK 500 236 2407 134 1367

木材 べいまつ 13.2 135 1.0 10.2合板 16.1 164 1.0 10.2

   にする。

 木材(べいまつ) 8,800 5,500

 鋼材 200,000

 合板 12 mm2.4 mm

 角材 □-100x100 100 x 100 mm コンクリート厚 270 mm スパン 800 mm

種別 計算式荷重

コンクリート荷重 6.75 689 作 業 荷 重 2.50 255

合   計 9.25 943

種別 計算式荷重

コンクリート荷重 34.72 3,542 作 業 荷 重 2.50 255 内部支保工荷重 0.50 51

型枠自重 0.50 51 合   計 38.22 3,899

 幅1m当たりの断面諸元は、以下の通りである

-------------- = -------------- = 24,000

5.1 設計条件5.1.1 荷重条件  - コンクリート kN/m3

  - 作業荷重 kN/m2

  - 型枠自重 kN/m2

  - 内部支保工荷重 kN/m2

5.1.2 許容応力度許容曲げ/引張応力度

(N/mm2) (kgf/cm2) (N/mm2) (kgf/cm2)t 16mm≦

t 12mm≦

  *許容たわみ量:普通の場合では2~3mm,外観が特に目立つ部分では1~2mm以内

5.1.3 ヤング率(N/mm2)

 合板(t=12mm) (N/mm2)(N/mm2)

5.3 底型枠の検討t=

 単管パイプ φ48.6x2.4 t=

t= L=

5.3.1 作用荷重 -下床版施工時荷重

(kN/m2) (kgf/m2)25.0x0.27

 -側壁上床版施工時荷重

(kN/m2) (kgf/m2)

5.3.2 せき板の検討

bh2 1000 x 122

  断面係数 :Z = (mm3/m)

Page 14: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 10 of 3

6 6

-------------- = -------------- = 144,000 12 12

  せき板(幅1m当たり)に作用する荷重は 9.25 (N/mm)

  バタ材の間隔は、 300 せき板を等分布荷重の3径間連続梁として計算する

-------------- = 83,250 (N.mm)10

M

-------------- = 3.5 σa=16.1 OK ≦ ⇒Z

-------------- = 0.7 δa=3.0mm OK ≦ ⇒

348 3,830 93,200

 バタ材の間隔は 300 mm バタ材(1本当たり)に作用する荷重

11.5 (N/mm) 支点となる大引き材の最大間隔は、 650 mmである。

-------------- = 605,569 (N.mm)8

M

-------------- = 158 σa=236 OK ≦ ⇒Z

wl -------------- = 3,727 (N)

2

-------------- = 16.1 (N) τa=134 OK ≦ ⇒A

-------------- = 1.4 δa=3.0mm OK ≦ ⇒

bh3 1000 x 123

  断面二次モーメント:I = (mm4/m)

   w = 9.25x1000/1000 = mmである。

wl2

 曲げモーメント: M=

 曲げ応力度  : σ= (N/mm2)

wl4

 たわみ    : δ=  (mm)137.6EI

5.3.3 バタ材の検討 単管パイプ(φ48.6x2.4,STK 500)を使用する  断面積      :A= (mm2)  断面係数     :Z= (mm3)  断面二次モーメント:I= (mm4)

  w = 38.2x300/1000 =

wl2

 曲げモーメント: M=

 曲げ応力度  : σ= (N/mm2)

 せん断力   : S=

1.5S

 せん断応力度 : τ=

5wl4

 たわみ    : δ=  (mm)384EI

Page 15: Form Support(t450)

THE PROJECT FOR FLOOD PROTECTION AND DRAINAGEIMPROVEMENT IN THE MUNICIPALITY OF PHNOM PENH

(PHASE II)

Page 11 of 3

10,000   

-------------- = -------------- = 166,667 6 6

-------------- = -------------- = 8,333,333 12 12

 大引きの荷重分担幅dは、325 (mm)

 大引き(1本当たり)に作用する荷重は、 12.42 (N/mm)

 支点となる建枠の間隔は、 610

-------------- = 577,775 (N.mm)8

M

-------------- = 3.5 σa=13.2 OK ≦ ⇒Z

wl -------------- = 3,789 (N)

2

-------------- = 0.6 (N) τa=1 OK ≦ ⇒A

-------------- = 0.3 δa=3.0mm OK ≦ ⇒

5.3.4 大引きの検討 角材(□-100x100)を使用する  断面積      :A= bh = (mm2)

bh2 100 x 1002

  断面係数 :Z = (mm3)

bh3 100 x 1003

  断面二次モーメント:I = (mm4)

  d=1/2x(800)=

   w = 38.2x400/1000 = mmである。

wl2

 曲げモーメント: M=

 曲げ応力度  : σ= (N/mm2)

 せん断力   : S=

1.5S

 せん断応力度 : τ=

5wl4

 たわみ    : δ=  (mm)384EI

Page 16: Form Support(t450)

支保工

25.0 2.50.50.5

材種 種別 仕様許容せん断応力度

鋼材SS 400 163 1663 93 949

STK 500 236 2407 134 1367

木材 べいまつ 13.2 135 1.0 10.2合板 16.1 164 1.0 10.2

 木材(べいまつ) 8,800 5,500

 鋼材 200,000

 合板 12 mm 角鋼管 □-60x60x2.3 60 60 2.3 mm 角材 □-100x120 100 120 mm コンクリート厚 270 mm スパン 914 mm

種別 計算式荷重

コンクリート荷重 6.75 689 作 業 荷 重 2.50 255

合   計 9.25 943

種別 計算式荷重

コンクリート荷重 34.72 3,542 作 業 荷 重 2.50 255 内部支保工荷重 0.50 51

型枠自重 0.50 51 合   計 38.22 3,899

 幅1m当たりの断面諸元は、以下の通りである

-------------- = -------------- = 24,000 6 6

-------------- = -------------- = 144,000

5.1 設計条件5.1.1 荷重条件  - コンクリート kN/m3

  - 作業荷重 kN/m2

  - 型枠自重 kN/m2

  - 内部支保工荷重 kN/m2

5.1.2 許容応力度許容曲げ/引張応力度

(N/mm2) (kgf/cm2) (N/mm2) (kgf/cm2)t 16mm≦

t 12mm≦

5.1.3 ヤング率(N/mm2)

 合板(t=12mm) (N/mm2)(N/mm2)

5.3 底型枠の検討t=

t= L=

5.3.1 作用荷重 -下床版施工時荷重

(kN/m2) (kgf/m2)25.0x0.27

 -側壁上床版施工時荷重

(kN/m2) (kgf/m2)

5.3.2 せき板の検討

bh2 1000 x 122

  断面係数 :Z = (mm3/m)

bh3 1000 x 123

  断面二次モーメント:I = (mm4/m)

Page 17: Form Support(t450)

12 12

  せき板(幅1m当たり)に作用する荷重は 9.25 (N/mm)

  バタ材の間隔は、 300 せき板を等分布荷重の3径間連続梁として計算する

-------------- = 83,250 (N.mm)10

M

-------------- = 3.5 σa=16.1 OK ≦ ⇒Z

-------------- = 0.7 δa=3.0mm OK ≦ ⇒

517 9,440 283,000

 バタ材の間隔は 300 mm バタ材(1本当たり)に作用する荷重

11.5 (N/mm) 支点となる大引き材の最大間隔は、 914 mmである。

-------------- = 1,197,372 (N.mm)8

M

-------------- = 127 σa=163 OK ≦ ⇒Z

wl -------------- = 5,240 (N)

2

-------------- = 15.2 (N) τa=93 OK ≦ ⇒A

-------------- = 1.8 δa=3.0mm OK ≦ ⇒

12,000   

   w = 9.25x1000/1000 = mmである。

wl2

 曲げモーメント: M=

 曲げ応力度  : σ= (N/mm2)

wl4

 たわみ    : δ=  (mm)137.6EI

5.3.3 バタ材の検討 角鋼管(□-60x60x2.3,STK 400)を使用する  断面積      :A= (mm2)  断面係数     :Z= (mm3)  断面二次モーメント:I= (mm4)

  w = 38.2x300/1000 =

wl2

 曲げモーメント: M=

 曲げ応力度  : σ= (N/mm2)

 せん断力   : S=

1.5S

 せん断応力度 : τ=

5wl4

 たわみ    : δ=  (mm)384EI

5.3.4 大引きの検討 角材(□-100x120)を使用する  断面積      :A= bh = (mm2)

Page 18: Form Support(t450)

-------------- = -------------- = 240,000 6 6

-------------- = -------------- = 14,400,000 12 12

 大引きの荷重分担幅dは、550 (mm)

 大引き(1本当たり)に作用する荷重は、 21.02 (N/mm)

 支点となる建枠の間隔は、 610

-------------- = 977,773 (N.mm)8

M

-------------- = 4.1 σa=13.2 OK ≦ ⇒Z

wl -------------- = 6,412 (N)

2

-------------- = 0.8 (N) τa=1 OK ≦ ⇒A

-------------- = 0.3 δa=3.0mm OK ≦ ⇒

bh2 100 x 1202

  断面係数 :Z = (mm3)

bh3 100 x 1203

  断面二次モーメント:I = (mm4)

  d=1/2x(914+186)=

   w = 38.2x550/1000 = mmである。

wl2

 曲げモーメント: M=

 曲げ応力度  : σ= (N/mm2)

 せん断力   : S=

1.5S

 せん断応力度 : τ=

5wl4

 たわみ    : δ=  (mm)384EI