{"id":66146,"date":"2026-07-11T08:00:50","date_gmt":"2026-07-10T23:00:50","guid":{"rendered":"https:\/\/norimen.net\/?p=66146"},"modified":"2026-07-10T19:29:49","modified_gmt":"2026-07-10T10:29:49","slug":"relaksasi-untai-pc","status":"publish","type":"post","link":"https:\/\/norimen.net\/id\/pc-strand-relaxation\/","title":{"rendered":"Apa Itu Relaksasi? | Penjelasan Mekanisme Pelonggaran Bertahap Kawat Baja PC Menggunakan Karet Gelang [Pengantar Ancor]"},"content":{"rendered":"<p>Halo semuanya.<\/p>\n<p>Ini Enta.<\/p>\n<p>Beberapa hari yang lalu, setelah saya menulis artikel tentang set loss, ada yang bertanya, \u201cLalu, apa itu relaksasi?\u201d w. Itu pertanyaan yang bagus, sih w.<\/p>\n<p>Hal ini tercantum dalam Pedoman Desain dan Konstruksi Jangkar Tanah! Kalau aku bilang begitu, pasti kalian bakal kaget, kan? w<\/p>\n<p>Sambil berpikir, \u201cBagaimana ya cara menjelaskannya agar anakku pun bisa mengerti?\u201d, aku berpikir, \u201cKalau aku bisa menjelaskannya dengan baik, para peserta magang pasti juga akan mudah memahaminya.\u201d<\/p>\n<p>Kembali ke topik utama<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-38280\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2019\/02\/2019-02-09-10.47.11.jpg\" alt=\"Kawat baja PC setelah proses penarikan\" width=\"375\" height=\"500\" srcset=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2019\/02\/2019-02-09-10.47.11.jpg 375w, https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2019\/02\/2019-02-09-10.47.11-225x300.jpg 225w\" sizes=\"auto, (max-width: 375px) 100vw, 375px\" \/><\/p>\n<p>Saya akan menjelaskan \u201crelaksasi\u201d dengan menggunakan karet gelang sebagai ilustrasi.<\/p>\n<p>Ini adalah panduan pemula bagi Anda yang baru saja mulai mempelajari ground anchor, atau bagi Anda yang baru pertama kali melihat istilah ini dalam dokumen manajemen stres.<\/p>\n<p>Meskipun hal ini tercantum dalam Pedoman Desain dan Konstruksi Pemasangan Jangkar Tanah, tapi tetap saja agak bikin bingung, hehe.<\/p>\n<h3>Relaksasi yang Dapat Dipahami Melalui Karet Gelang<\/h3>\n<p>Misalkan kita menarik karet gelang hingga meregang, lalu mengaitkannya pada paku dalam keadaan tetap sepanjang itu untuk mengikatnya.<\/p>\n<p>Saat ditarik, kita pasti berusaha sekuat tenaga sambil berpikir, \u201cAku ingin kembali!\u201d kan?<\/p>\n<p>Namun, apa yang akan terjadi jika dibiarkan begitu saja selama beberapa hari? Karet gelang akan semakin melemah, dan daya elastisitasnya pun akan semakin berkurang dibandingkan semula.<\/p>\n<p><strong>Meskipun panjangnya sama sekali tidak berubah, hanya saja daya tariknya yang perlahan-lahan berkurang.<\/strong><\/p>\n<p><span style=\"color: #ff0000; font-size: 20px;\"><strong> Inilah yang disebut relaksasi.<\/strong><\/span><\/p>\n<p>Bisakah Anda membayangkannya?<\/p>\n<p>Hal yang sama juga berlaku untuk kawat baja PC.<\/p>\n<p>Tarik dengan kuat menggunakan dongkrak (dengan tegang), lalu kencangkan dengan irisan kayu.<\/p>\n<p>Karena sudah dipasang, panjang kawat baja tersebut tidak akan berubah lagi.<\/p>\n<p>Namun, bagian dalam kabel baja agak sulit untuk terus bertahan dengan kekuatan penuh; seiring berjalannya waktu, kekuatan untuk bertahan\u2014yaitu kekuatan jangkar dalam menahan gunung\u2014perlahan-lahan menghilang.<\/p>\n<p>Tentu saja, baja jauh lebih tahan lama daripada karet gelang, jadi yang lepas hanya sedikit saja.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-66165\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/07\/5837078e4a107fd67055296d731c1ad2.jpg\" alt=\"Relaksasi dapat dipahami melalui karet gelang\" width=\"600\" height=\"338\" \/><\/p>\n<h3>Perbedaan dengan Set Loss | \u201cPenurunan Seketika\u201d dan \u201cPenurunan Bertahap\u201d<\/h3>\n<p>Hal yang sering disalahartikan di sini adalah \u201cset loss\u201d yang saya tulis beberapa hari yang lalu. Perbedaannya terletak pada waktu dan kecepatannya.<\/p>\n<p><strong>Kerugian set<\/strong>adalah \u201cpenurunan dalam sekali hentakan\u201d, di mana begitu menempel, pasak langsung menancap dalam dan tenaga pun hilang.<\/p>\n<p class=\"isSelectedEnd\">Relaksasi adalah fenomena di mana, setelah terjadi set loss, beban berkurang sedikit demi sedikit seiring berjalannya waktu karena sifat kawat baja PC itu sendiri.<\/p>\n<p class=\"isSelectedEnd\">Secara gambaran, set loss adalah \u201cpenurunan beban yang terjadi hanya sekali\u201d, sedangkan relaksasi adalah \u201cpenurunan beban yang terus berlanjut secara perlahan setelahnya\u201d.<\/p>\n<p class=\"isSelectedEnd\">Dengan kata lain, perbedaan antara set loss dan relaksasi terletak pada fakta bahwa set loss merupakan fenomena di mana beban turun secara tiba-tiba begitu material mengeras, sedangkan relaksasi adalah fenomena di mana beban berkurang secara bertahap selama masa penggunaan, baik dalam hitungan hari, bulan, maupun tahun.<\/p>\n<p class=\"isSelectedEnd\">Karena keduanya pada akhirnya bertujuan untuk mengurangi beban pada jangkar, maka dalam pengelolaan tegangan, penting untuk mempertimbangkan set loss dan relaksasi secara bersamaan.<\/p>\n<p>Selain itu, mengenai mekanisme set loss, penyebabnya, serta cara meminimalkan penurunan beban, telah dijelaskan secara rinci dalam artikel terpisah, jadi silakan baca juga artikel tersebut.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66167 size-full\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/07\/996ecb2084457d148da4c09522ab751d.jpg\" alt=\"Perbedaan antara set loss dan relaksasi\" width=\"600\" height=\"338\" \/><\/p>\n<h3>Seberapa banyak yang akan rontok? | Angka-angka JIS dan langkah-langkah penanggulangan di lapangan<\/h3>\n<p>Lalu, seberapa besar sebenarnya penurunan kekuatannya? Jika kita memeriksa spesifikasi kawat baja PC dan kawat baja PC berpilin (JIS G 3536),<\/p>\n<p>Nilai relaksasi adalah<strong>Untuk produk standar, 8,01 TP3T atau kurang; untuk produk dengan relaksasi rendah, 2,51 TP3T atau kurang<\/strong>Demikianlah yang diatur.<\/p>\n<p>Nilai ini merupakan tingkat penurunan terhadap gaya awal setelah 1.000 jam berlalu.<\/p>\n<p>Dengan kata lain, pada tahap bahan terdapat klasifikasi \u201cproduk biasa (N)\u201d dan \u201cproduk relaksasi rendah (L)\u201d, yang dapat dibedakan dari huruf N dan L di akhir kode.<\/p>\n<p>Secara umum, bahan yang digunakan dalam konstruksi jangkar tanah sebagian besar diperkirakan merupakan bahan dengan relaksasi rendah.<\/p>\n<p>Sebagai catatan, metode pengujian relaksasi itu sendiri telah ditetapkan dalam standar JIS Z 2276, namun,<\/p>\n<p>Pengujian itu dilakukan di laboratorium dengan menggunakan spesimen berukuran kecil.<\/p>\n<p>Mungkin karena pengujian itu dilakukan dengan akurasi 1\/100, kami pun melakukan pengendalian 1\/100 di luar...<\/p>\n<p>Sejujurnya, kalian pasti tahu kalau aku sedang menerapkan manajemen yang mustahil, kan? w<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-66168 size-full\" src=\"https:\/\/norimen.net\/wordpress\/wp-content\/uploads\/2026\/07\/4b8f9511eb7d15de6a00254c9da23799.jpg\" alt=\"Uji relaksasi logam JIS Z2276\" width=\"600\" height=\"300\" \/><\/p>\n<p>Langkah-langkah yang diambil di lapangan sangat sederhana.<\/p>\n<p><strong>Sejak awal, saya sudah bersiap dengan mempertimbangkan relaksasi kawat baja dan kehilangan set.<\/strong><\/p>\n<p>Artinya, kita menambahkan jumlah tersebut terlebih dahulu dengan memperhitungkan bagian yang akan terbuang.<\/p>\n<p>Berapa banyak yang akan dimuat tergantung pada desain dan spesifikasinya, tetapi ini bukan sekadar \u201cmenarik, mengikat, dan selesai\u201d, melainkan<\/p>\n<p>Akan lebih mudah dipahami jika Anda membayangkan bahwa \u201cbahkan setelah dikencangkan, beban akan berangsur-angsur melemah\u201d, bukan?<\/p>\n<p>&nbsp;<\/p>\n<p>Awalnya saya membahas tentang karet gelang, tetapi pada akhirnya, manajemen tegangan jangkar itu adalah \u201csejauh mana kita bisa membayangkan berkurangnya gaya yang tak terlihat\u201d.<\/p>\n<p>Kekuatan akan berkurang secara tiba-tiba akibat terbenamnya irisan, berkurang secara bertahap akibat kelelahan kawat baja, dan jika kondisi tanah buruk, kekuatan juga akan berkurang akibat penurunan pelat penahan tekanan.<\/p>\n<p>Dengan mempertimbangkan semua hal tersebut, sisa beban yang tersedia harus cukup untuk memastikan gunung tetap stabil selama masa pengoperasian.<\/p>\n<p>Saya akan sangat senang jika makna istilah-istilah yang tercantum dalam pedoman desain dan konstruksi dapat langsung dipahami hanya dengan satu karet gelang.<\/p>\n<p>Istilah-istilah teknis itu, kalau sudah dipahami, sebenarnya nggak terlalu sulit kok w<\/p>\n<p>Mungkin kali berikutnya Creep ya, hehe<\/p>\n<p>&nbsp;<\/p>\n<p>Sampai jumpa lagi.<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"X6i7xaW3wb\"><p><a href=\"https:\/\/norimen.net\/id\/ground-anchor-basic-structure\/\">Apa itu Konstruksi Jangkar Tanah? Penjelasan yang Mudah Dipahami tentang Struktur Dasar dan Prinsip Kerjanya<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201cApa Itu Konstruksi Jangkar Tanah? Penjelasan Mudah dan Jelas tentang Struktur Dasar dan Prinsipnya\u201d \u2014 Sekolah Pengelolaan Lereng dari Shin-Ent\" src=\"https:\/\/norimen.net\/ground-anchor-basic-structure\/embed\/#?secret=72TM0bHd20#?secret=X6i7xaW3wb\" data-secret=\"X6i7xaW3wb\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>","protected":false},"excerpt":{"rendered":"<p>Halo semuanya. Ini Enta. Beberapa hari yang lalu, setelah saya menulis artikel tentang set loss, ada yang bertanya, \u201cLalu, apa itu relaksasi?\u201d w Itu pertanyaan yang bagus, sih w Tertera di Pedoman Desain dan Konstruksi Jangkar Tanah! Kalau saya bilang begitu, pasti kalian bakal kaget, kan? w Di tempat kami\u2026<\/p>","protected":false},"author":2,"featured_media":66166,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[28],"tags":[48,952,960,1898],"class_list":["post-66146","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ground-anchor","tag-48","tag-952","tag-pc","tag-1898"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ 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