Proses likuifaksi gas dengan analisis termodinamikaDeskripsi lengkap
LIKUIFAKSI
LIKUIFAKSIFull description
LiquifaksiDeskripsi lengkap
likuifaksiFull description
GeoteknikFull description
Gasifikasi & LikuifaksiFull description
LIKUIFAKSI
Dinamika TanahFull description
Mata kuliah HAIRULLA Meningkatan kerapatan (densifikasi) (Dr). Perbaikan dengan cara kimiawi (Solidifikasi)
LIKUEFAKSI TANAH
Menurunkan derajat kejenuhan dengan dewatering Dissipasi tekanan air pori dengan drainase
Pengertian Likuefaksi Tanah
Potensi Likuifaksi
Perbaikan Tanah Rentan Liquifaksi
Kontrol deformasi (memasang dinding diafragma) Memperkuat pondasi
Asal Usul Likuefaksi Tanah
Penggunaan flexible joint dalam struktur untuk mengurangi bahaya likuifaksi
Penggunaan geogrid untuk memperkuat pondasi Penggunaan sheetpile untuk
STRUKTUR DI ATAS TANAH
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Mata kuliah HAIRULLA
1. Likuefaksi Tanah Pencairan Tanah menggambarkan sebuah fenomena dimana tanah kehilangan kekuatan dan kekakuan sebagai respons terhadap tegangan yang terjadi biasanya getaran atau gempa yang menyebabakan perubahan tegangan secara mendadak, menyebabkan Tanah Tanah berperilaku seperti cairan. Dalam mekanika tanah istilah "cair" pertama kali digunakan oleh Hazen [1] merujuk pada kegagalan 1918 dari Bendungan Calaveras di California. Dia menggambarkan mekanisme pencairan aliran tanggul bendungan sebagai berikut:
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Mata kuliah HAIRULLA
Fenomena ini paling sering diamati dalam tanah berpasir yang jenuh, longgar (kepadatan rendah atau uncompacted),. Hal ini karena pasir lepas memiliki kecenderungan memampatkan saat beban diterapkan; pasir padat Sebaliknya cenderung untuk memperluas dalam volume atau 'membesar'. Jika tanah sudah jenuh oleh air, seperti yang ada ketika tanah berada di bawah atau air tanah permukaan laut, maka air mengisi kesenjangan antara butir tanah ('ruang pori'). Sebagai respons terhadap penekanan tanah, air ini meningkatkan tekanan dan upaya untuk mengalir keluar dari tanah ke zona tekanan rendah (biasanya ke atas menuju permukaan tanah). Namun, jika pemuatan cepat diterapkan dan cukup besar, atau berulang kali (misalnya getaran gempa bumi, pemuatan badai gelombang) sedemikian rupa sehingga tidak mengalir keluar dalam waktu siklus berikutnya sebelum beban diterapkan, tekanan air dapat meningkatkan tekanan antara butiran tanah
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Mata kuliah HAIRULLA
2. Asal Usul Likuefaksi Tanah Potensi likuifaksi dari suatu lapisan tanah dapat ditentukan dari kombinasi sifat-sifat tanah, faktor lingkungan dan karakteristik gempa.
3. Pengertian Likuefaksi Tanah
Likuifaksi adalah peristiwa dimana tanah jenuh air
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Mata kuliah HAIRULLA
5. Perbaikan Tanah Rentan Liquifaksi 5.1. Meningkatan kerapatan (densifikasi) (Dr). Yaitu usaha secara mekanis agar butir-butir tanah merapat, Volume tanah berkurang, Volume pori berkurang, tetapi Volume butiran tanah tetap. Hal ini bisa dilakukan dengan cara menggilas atau menumbuk.
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Mata kuliah HAIRULLA
5.2. Perbaikan dengan cara kimiawi (Solidifikasi)
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Mata kuliah HAIRULLA
5.3. Menurunkan derajat kejenuhan dengan dewatering pengendalian air adalah istilah umum yang digunakan untuk menggambarkan kemampuan
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Mata kuliah HAIRULLA
5.4. Dissipasi tekanan air pori dengan drainase
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Mata kuliah HAIRULLA
5.5. Kontrol deformasi (memasang dinding diafragma)
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Mata kuliah HAIRULLA
5.6. Memperkuat pondasi Pondasi yang digunakan harus memiliki
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Mata kuliah
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Mata kuliah
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Mata kuliah
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