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Baøi taäp chöông 2

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BAØI TAÄP CHÖÔNG 2
BAØI TAÄP 2.1:
Thieát keá moùng noâng döôùi chaân coät kích thöôùc 0,25mx0,25m, löïc doïc taïi
chaân coät Ntc=40T. Ñaát neàn coù troïng löôïng ñôn vò theå tích γ=1,8T/m3, ϕ=18o,
c=1.5T/m2.
Keát quaû cuûa thí nghieäm neùn coá keát ñaát neàn trong baûng sau:
p(T/m2)
e

0

2.5

5

10

20

40

64

80

0.875 0.864 0.851 0.826 0.801 0.782 0.768 0.755

Beâ toâng moùng M300, coù Rn=130kG/cm2, Rk=10kG/cm2.
Söû duïng theùp loaïi AII, coù Ra=2800kG/cm2.
BAØI TAÄP 2.2:
Thieát keá moùng noâng döôùi chaân coät kích thöôùc 0,25mx0,25m, taûi troïng taïi
chaân coät Ntc=40T, Mtc=4Tm. Ñaát neàn coù troïng löôïng ñôn vò theå tích γ=1,8T/m3,
ϕ=20o, c=1.5T/m2.
Keát quaû cuûa thí nghieäm neùn coá keát ñaát neàn trong baûng sau:
p(T/m2)
e

0

2.5

5

10

20

40

64

80

0.875 0.864 0.851 0.826 0.801 0.782 0.768 0.755

Beâ toâng moùng M300, coù Rn=130kG/cm2, Rk=10kG/cm2.
Söû duïng theùp loaïi AII, coù Ra=2800kG/cm2.
BAØI TAÄP 2.3:
Thieát keá moùng noâng döôùi chaân coät kích thöôùc 0,25mx0,25m, taûi troïng taïi
chaân coät Ntc=40T, Mxtc=4Tm, Mytc=4Tm. Ñaát neàn coù troïng löôïng ñôn vò theå tích
γ=1,8T/m3, ϕ=20o, c=1.7T/m2.
Keát quaû cuûa thí nghieäm neùn coá keát ñaát neàn trong baûng sau:
p(T/m2)
e

0

2.5

5

10

20

40

64

80

0.875 0.864 0.851 0.826 0.801 0.782 0.768 0.755

Beâ toâng moùng M300, coù Rn=130kG/cm2, Rk=10kG/cm2.
Söû duïng theùp loaïi AII, coù Ra=2800kG/cm2.
ThS.Haø Coâng Huy – Khoa Kyõ thuaät Coâng Trình – Tröôøng Ñaïi hoïc DL Coâng Ngheä Saøi Goøn

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Chuong 2 bai tap

  • 1. Baøi taäp chöông 2 1 http://www.ebook.edu.vn BAØI TAÄP CHÖÔNG 2 BAØI TAÄP 2.1: Thieát keá moùng noâng döôùi chaân coät kích thöôùc 0,25mx0,25m, löïc doïc taïi chaân coät Ntc=40T. Ñaát neàn coù troïng löôïng ñôn vò theå tích γ=1,8T/m3, ϕ=18o, c=1.5T/m2. Keát quaû cuûa thí nghieäm neùn coá keát ñaát neàn trong baûng sau: p(T/m2) e 0 2.5 5 10 20 40 64 80 0.875 0.864 0.851 0.826 0.801 0.782 0.768 0.755 Beâ toâng moùng M300, coù Rn=130kG/cm2, Rk=10kG/cm2. Söû duïng theùp loaïi AII, coù Ra=2800kG/cm2. BAØI TAÄP 2.2: Thieát keá moùng noâng döôùi chaân coät kích thöôùc 0,25mx0,25m, taûi troïng taïi chaân coät Ntc=40T, Mtc=4Tm. Ñaát neàn coù troïng löôïng ñôn vò theå tích γ=1,8T/m3, ϕ=20o, c=1.5T/m2. Keát quaû cuûa thí nghieäm neùn coá keát ñaát neàn trong baûng sau: p(T/m2) e 0 2.5 5 10 20 40 64 80 0.875 0.864 0.851 0.826 0.801 0.782 0.768 0.755 Beâ toâng moùng M300, coù Rn=130kG/cm2, Rk=10kG/cm2. Söû duïng theùp loaïi AII, coù Ra=2800kG/cm2. BAØI TAÄP 2.3: Thieát keá moùng noâng döôùi chaân coät kích thöôùc 0,25mx0,25m, taûi troïng taïi chaân coät Ntc=40T, Mxtc=4Tm, Mytc=4Tm. Ñaát neàn coù troïng löôïng ñôn vò theå tích γ=1,8T/m3, ϕ=20o, c=1.7T/m2. Keát quaû cuûa thí nghieäm neùn coá keát ñaát neàn trong baûng sau: p(T/m2) e 0 2.5 5 10 20 40 64 80 0.875 0.864 0.851 0.826 0.801 0.782 0.768 0.755 Beâ toâng moùng M300, coù Rn=130kG/cm2, Rk=10kG/cm2. Söû duïng theùp loaïi AII, coù Ra=2800kG/cm2. ThS.Haø Coâng Huy – Khoa Kyõ thuaät Coâng Trình – Tröôøng Ñaïi hoïc DL Coâng Ngheä Saøi Goøn